Trial Outcomes & Findings for Filibuvir In Treatment Naive Hepatitis C Virus (HCV) Genotype 1 Subjects (NCT NCT00987337)

NCT ID: NCT00987337

Last Updated: 2014-01-27

Results Overview

For participants who received filibuvir, had undetectable HCV RNA from Week 4 through 24 and discontinued therapy at Week 24, SVR was defined as undetectable plasma HCV RNA levels (\<15 IU/mL) at both Week 24 (End of Treatment \[EOT\]) and Week 72, regardless of the HCV RNA levels between Week 24 and 72. For participants who received filibuvir, had detectable HCV RNA at Week 4 or later and discontinued therapy at Week 48 or who received placebo, SVR was defined as undetectable plasma HCV RNA levels (\<15 IU/mL) at both Week 48 (EOT) and Week 72, regardless of the HCV RNA levels between Week 48 and 72.

• Recruitment status: COMPLETED
• Study phase: PHASE2
• Target enrollment: 288 participants
• Primary outcome timeframe: Week 72
• Results posted on: 2014-01-27

Participant Flow

Participant milestones

Measure	Filibuvir 300 mg Plus pegIFN/RBV Filibuvir 300 milligram (mg) tablet orally twice daily as blinded therapy along with pegylated interferon alpha-2a (pegIFN alpha-2a) 180 microgram (mcg) subcutaneously once weekly and ribavirin (RBV) 1000 milligram per day (mg/day) to participants weighing less than or equal to(\<=) 75 kilogram (kg) or RBV 1200 mg/day to participants weighing greater than (\>) 75 kg, orally in 2 divided doses up to Week 24. Participants with undetectable hepatitis C virus (HCV) ribonucleic acid (RNA) (HCV RNA \<15 international units/milliliter \[IU/mL\]) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (greater than or equal to \[\>=\] 15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75kg or RBV 1200 mg/day if participant weighed \>75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Overall Study STARTED	96	96	96
Overall Study COMPLETED	39	41	45
Overall Study NOT COMPLETED	57	55	51

Reasons for withdrawal

Measure	Filibuvir 300 mg Plus pegIFN/RBV Filibuvir 300 milligram (mg) tablet orally twice daily as blinded therapy along with pegylated interferon alpha-2a (pegIFN alpha-2a) 180 microgram (mcg) subcutaneously once weekly and ribavirin (RBV) 1000 milligram per day (mg/day) to participants weighing less than or equal to(\<=) 75 kilogram (kg) or RBV 1200 mg/day to participants weighing greater than (\>) 75 kg, orally in 2 divided doses up to Week 24. Participants with undetectable hepatitis C virus (HCV) ribonucleic acid (RNA) (HCV RNA \<15 international units/milliliter \[IU/mL\]) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (greater than or equal to \[\>=\] 15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75kg or RBV 1200 mg/day if participant weighed \>75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Overall Study Adverse Event	10	9	8
Overall Study Insufficient Virologic Response	10	7	12
Overall Study Virologic Breakthrough	2	2	8
Overall Study Lost to Follow-up	10	6	2
Overall Study Withdrawal by Subject	6	9	9
Overall Study Other	0	2	5
Overall Study Protocol Violation	1	0	2
Overall Study Participant Relapsed	18	20	5

Baseline Characteristics

Filibuvir In Treatment Naive Hepatitis C Virus (HCV) Genotype 1 Subjects

Baseline characteristics by cohort

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.	Total n=288 Participants Total of all reporting groups
Age, Customized 18 to 44 years	36 participants n=5 Participants	25 participants n=7 Participants	31 participants n=5 Participants	92 participants n=4 Participants
Age, Customized 45 to 64 years	56 participants n=5 Participants	68 participants n=7 Participants	61 participants n=5 Participants	185 participants n=4 Participants
Age, Customized >=65 years	4 participants n=5 Participants	3 participants n=7 Participants	4 participants n=5 Participants	11 participants n=4 Participants
Sex: Female, Male Female	44 Participants n=5 Participants	47 Participants n=7 Participants	44 Participants n=5 Participants	135 Participants n=4 Participants
Sex: Female, Male Male	52 Participants n=5 Participants	49 Participants n=7 Participants	52 Participants n=5 Participants	153 Participants n=4 Participants

PRIMARY outcome

Timeframe: Week 72

Population: ITT population included all randomized participants who took at least 1 dose of study drug. If a participant had a missing value at Week 72, participant was considered a failure; if a participant had achieved SVR but died or discontinued within same time period, the participant was considered a success.

For participants who received filibuvir, had undetectable HCV RNA from Week 4 through 24 and discontinued therapy at Week 24, SVR was defined as undetectable plasma HCV RNA levels (<15 IU/mL) at both Week 24 (End of Treatment [EOT]) and Week 72, regardless of the HCV RNA levels between Week 24 and 72. For participants who received filibuvir, had detectable HCV RNA at Week 4 or later and discontinued therapy at Week 48 or who received placebo, SVR was defined as undetectable plasma HCV RNA levels (<15 IU/mL) at both Week 48 (EOT) and Week 72, regardless of the HCV RNA levels between Week 48 and 72.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Percentage of Participants With Sustained Viral Response (SVR) at Week 72	41.7 percentage of participants	39.6 percentage of participants	45.8 percentage of participants

SECONDARY outcome

Timeframe: Week 4, 12, 24, 48

Population: ITT population included all randomized participants who took at least 1 dose of study drug. Last observation carried forward (LOCF) method was used to impute missing values for participants who did not discontinue from study. Participants who discontinued early from the study were considered not to have undetectable HCV RNA.

Percentage of participants with undetectable HCV RNA at Week 4 (rapid viral response [RVR]), Week 12 (early viral response [EVR]), Week 24 and Week 48 were summarized. Undetectable HCV RNA was defined as plasma HCV RNA levels <15 IU/mL.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Percentage of Participants With Undetectable Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) at Week 4, 12, 24 and 48 Week 4	58.3 percentage of participants	61.5 percentage of participants	28.1 percentage of participants
Percentage of Participants With Undetectable Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) at Week 4, 12, 24 and 48 Week 12	76.0 percentage of participants	78.1 percentage of participants	67.7 percentage of participants
Percentage of Participants With Undetectable Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) at Week 4, 12, 24 and 48 Week 24	74.0 percentage of participants	76.0 percentage of participants	77.1 percentage of participants
Percentage of Participants With Undetectable Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) at Week 4, 12, 24 and 48 Week 48	54.2 percentage of participants	58.3 percentage of participants	64.6 percentage of participants

SECONDARY outcome

Timeframe: 12 weeks after completion of therapy (Week 36 or 60)

Population: ITT population. Participant with missing HCV RNA values at end of treatment and all follow-up visits or at the specified time point and all subsequent visits was considered not to have undetectable HCV RNA. Missing HCV RNA value at 12 weeks following completion of therapy was imputed using value of subsequent follow-up visit, if available.

A participant was considered to have achieved SVR12 if the plasma HCV RNA levels were <15 IU/mL at both the end of treatment (Week 24 or 48, depending on the time of therapy discontinuation based on HCV RNA levels during therapy) and 12 weeks following the completion of therapy (Week 36 for participants who ended therapy at Week 24; Week 60 for participants who ended therapy at Week 48). Overall percentage of participants with SVR12 was summarized.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Percentage of Participants With Sustained Viral Response at 12 Weeks Following Completion of Therapy (SVR12)	42.7 percentage of participants	44.8 percentage of participants	45.8 percentage of participants

SECONDARY outcome

Timeframe: 24 weeks after completion of therapy (Week 48 or 72)

Population: ITT population.N (number of participants analyzed)=evaluable participants for the measure. Missing HCV RNA value at EOT, all follow-up visits/at specified time point, all subsequent visits was considered not to have undetectable HCV RNA.Missing HCV RNA value at 24 weeks after EOT was imputed using value of subsequent follow-up visit, if available.

SVR24 was summarized only for those participants who received filibuvir, had undetectable HCV RNA from Week 4 through 24 and discontinued therapy at Week 24 and all participants who received placebo for 48 weeks. A participant was considered to have achieved SVR24 if the plasma HCV RNA levels were <15 IU/mL at both the end of treatment (Week 24 for filibuvir participants who ended therapy at Week 24 and Week 48 for participants who received placebo) and 24 weeks following the completion of therapy (Week 48 for filibuvir participants who ended therapy at Week 24; Week 72 for placebo participants who ended therapy at Week 48).

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=45 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=47 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=67 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Percentage of Participants With Sustained Viral Response at 24 Weeks Following Completion of Therapy (SVR24)	73.3 percentage of participants	66.0 percentage of participants	65.7 percentage of participants

SECONDARY outcome

Timeframe: Baseline up to Week 48

Population: ITT population included all randomized participants who took at least 1 dose of study drug.

A participant was considered to have breakthrough viremia if there was a >2 log10 increase from nadir in HCV RNA concentration while on treatment or HCV RNA that became undetectable with treatment but then became persistently detectable (2 or more consecutive viral RNA measurements >1000 IU/mL) again during treatment. Overall percentage of participants with breakthrough viremia was summarized.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Percentage of Participants With Breakthrough Viremia	4.2 percentage of participants	4.2 percentage of participants	7.3 percentage of participants

SECONDARY outcome

Timeframe: Week 24 or Week 48 up to Week 72

Population: ITT population included all randomized participants who took at least 1 dose of study drug. Here 'N' (number of participants analyzed) signifies those participants who were evaluable for this measure. Participant with all the HCV RNA values missing during follow-up was imputed as having relapsed.

A participant was considered to have relapsed response if the plasma HCV RNA levels were undetectable at end of treatment (Week 24 or 48, depending on the time of therapy discontinuation based on HCV RNA levels during therapy) but detectable (>=15 IU/mL) during the off-treatment follow-up period up to Week 72. Overall percentage of participants with relapsed response was summarized.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=64 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=70 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=59 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Percentage of Participants With Relapsed Response	35.9 percentage of participants	42.9 percentage of participants	25.4 percentage of participants

SECONDARY outcome

Timeframe: Baseline, Week 4, 12, 24

Population: ITT population included all randomized participants who took at least 1 dose of study drug. LOCF method was used for imputing missing values for participants who did not discontinue from study. Final value was imputed as baseline for participants who discontinued before the time point of interest.

Plasma HCV RNA levels were measured using the Roche COBAS TaqMan assay (limit of detection: 15 IU/mL). Baseline value calculated as the average of the screening and Day 1 pre-dose measurements.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Change From Baseline in Plasma Log10 Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) at Week 4, 12 and 24 Baseline	6.1 log10 IU/mL Standard Deviation 0.7	6.0 log10 IU/mL Standard Deviation 0.6	6.1 log10 IU/mL Standard Deviation 0.7
Change From Baseline in Plasma Log10 Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) at Week 4, 12 and 24 Change at Week 4	-4.0 log10 IU/mL Standard Deviation 1.6	-4.2 log10 IU/mL Standard Deviation 1.2	-3.0 log10 IU/mL Standard Deviation 1.6
Change From Baseline in Plasma Log10 Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) at Week 4, 12 and 24 Change at Week 12	-4.1 log10 IU/mL Standard Deviation 1.8	-4.2 log10 IU/mL Standard Deviation 1.6	-3.9 log10 IU/mL Standard Deviation 1.7
Change From Baseline in Plasma Log10 Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) at Week 4, 12 and 24 Change at Week 24	-3.7 log10 IU/mL Standard Deviation 2.2	-3.8 log10 IU/mL Standard Deviation 2.1	-3.9 log10 IU/mL Standard Deviation 2.0

SECONDARY outcome

Timeframe: Baseline up to Week 72

Population: Safety population included all randomized participants who took at least 1 dose of study drug analyzed as treated.

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. A serious AE (SAE) was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Adverse events were graded as mild (did not interfere with participant's usual function), moderate (interfered to some extent with participant's usual function) or severe (interfered significantly with participant's usual function). The most severe grade was used in case of multiple occurrences of the same event.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Number of Adverse Events (AEs) by Severity (All Causality) Mild	672 adverse events	731 adverse events	745 adverse events
Number of Adverse Events (AEs) by Severity (All Causality) Moderate	154 adverse events	169 adverse events	179 adverse events
Number of Adverse Events (AEs) by Severity (All Causality) Severe	35 adverse events	20 adverse events	27 adverse events

SECONDARY outcome

Timeframe: Baseline up to Week 72

Population: Safety population included all randomized participants who took at least 1 dose of study drug analyzed as treated.

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to Week 72 that were absent before treatment or that worsened relative to pretreatment state. All causality AEs included SAEs as well as non-serious AEs, without regard to relationship to the study drug, which occurred during the trial. Treatment-related were events considered related to study drug by the investigator. Number of participants with treatment related TEAEs and all causality TEAEs were summarized.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) by Relationship to Study Drug (Any Therapy) Treatment related AEs	85 participants	88 participants	91 participants
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) by Relationship to Study Drug (Any Therapy) All-causality AEs	88 participants	92 participants	92 participants

SECONDARY outcome

Timeframe: Baseline up to Week 72

Population: Safety population included all randomized participants who took at least 1 dose of study drug analyzed as treated.

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Number of Participants Who Discontinued Study Due to Adverse Events (AEs)	10 participants	9 participants	8 participants

SECONDARY outcome

Timeframe: Baseline up to Week 72

Population: Safety population included all randomized participants who took at least 1 dose of study drug analyzed as treated.

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Number of Participants With Dose Reduction or Temporary Discontinuation Due to Adverse Events (AEs)	28 participants	22 participants	28 participants

SECONDARY outcome

Timeframe: Baseline up to Week 72

Population: Safety population included all randomized participants who took at least 1 dose of study drug analyzed as treated. Here 'N' (number of participants analyzed) signifies those participants who were evaluable for this measure.

Number of participants with laboratory abnormalities by Division of Auto Immune Disease Syndrome (DAIDS) grade of 4; 3 or 4; 2, 3 or 4 was summarized. Abnormal laboratory values refers to a DAIDS grade greater than 0, where grade 1= mild, grade 2= moderate, grade 3= severe and grade 4 = potentially life-threatening.

Outcome measures

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=94 Participants Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 Participants Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 Participants Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Number of Participants With Laboratory Test Abnormalities by Severity Grade 4	11 participants	16 participants	8 participants
Number of Participants With Laboratory Test Abnormalities by Severity Grade 3 or 4	37 participants	46 participants	43 participants
Number of Participants With Laboratory Test Abnormalities by Severity Grade 2, 3 or 4	73 participants	83 participants	81 participants

SECONDARY outcome

Timeframe: Week 0 (pre-dose), Week 2, 4, 8, 12, 16, 20, 24, 48 (only for those participants who received treatment till Week 48) post-dose

Population: Data could not be summarized due to sparse sampling time points adopted for this study.

Outcome measures

Outcome data not reported

Adverse Events

Filibuvir 300 mg Plus pegIFN/RBV

Serious events: 14 serious events

Other events: 85 other events

Deaths: 0 deaths

Filibuvir 600 mg Plus pegIFN/RBV

Serious events: 6 serious events

Other events: 89 other events

Deaths: 0 deaths

Placebo Plus pegIFN/RBV

Serious events: 6 serious events

Other events: 90 other events

Deaths: 0 deaths

Serious adverse events

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 participants at risk Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 participants at risk Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 participants at risk Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Blood and lymphatic system disorders Anaemia	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Blood and lymphatic system disorders Neutropenia	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Ear and labyrinth disorders Vertigo	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Ear and labyrinth disorders Vestibular disorder	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Haematochezia	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Rectal haemorrhage	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Infections and infestations Appendicitis	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Infections and infestations Appendicitis perforated	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Infections and infestations Bacterial abscess central nervous system	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Infections and infestations Lymph node tuberculosis	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Infections and infestations Peritonitis bacterial	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Infections and infestations Sepsis	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Injury, poisoning and procedural complications Fall	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Injury, poisoning and procedural complications Scapula fracture	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Investigations Actinomyces test positive	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Investigations Blood urea nitrogen/creatinine ratio increased	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Breast cancer	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Gastric cancer	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Lung neoplasm malignant	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Rectal cancer	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Nervous system disorders Cerebral haemorrhage	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Nervous system disorders Cerebrovascular accident	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Nervous system disorders Loss of consciousness	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Pregnancy, puerperium and perinatal conditions Abortion spontaneous	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Psychiatric disorders Cardiac neurosis	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Psychiatric disorders Depression	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Respiratory, thoracic and mediastinal disorders Chronic obstructive pulmonary disease	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Respiratory, thoracic and mediastinal disorders Pulmonary calcification	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Respiratory, thoracic and mediastinal disorders Pulmonary embolism	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Ecchymosis	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Pyoderma gangrenosum	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.

Other adverse events

Measure	Filibuvir 300 mg Plus pegIFN/RBV n=96 participants at risk Filibuvir 300 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Filibuvir 600 mg Plus pegIFN/RBV n=96 participants at risk Filibuvir 600 mg tablet orally twice daily as blinded therapy along with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 24. Participants with undetectable HCV RNA (plasma HCV RNA \<15 IU/mL) from Week 4 through 24 were discontinued from therapy and followed through Week 72. Participants with detectable HCV RNA (\>=15 IU/mL) at Week 4 or later but undetectable at Week 24 received open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day if participant weighed \<=75 kg or RBV 1200 mg/day if participant weighed \> 75 kg, orally in 2 divided doses up to Week 48 and then followed through Week 72.	Placebo Plus pegIFN/RBV n=96 participants at risk Placebo matched to filibuvir tablet orally twice daily as blinded therapy in combination with pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg, orally in 2 divided doses up to Week 24 followed by open-label pegIFN alpha-2a 180 mcg subcutaneously once weekly and RBV 1000 mg/day to participants weighing \<=75 kg or RBV 1200 mg/day to participants weighing \>75 kg orally in 2 divided doses up to Week 48. Participants were then followed through Week 72.
Blood and lymphatic system disorders Anaemia	15.6% 15/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	11.5% 11/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	16.7% 16/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Blood and lymphatic system disorders Leukopenia	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Blood and lymphatic system disorders Lymphopenia	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Blood and lymphatic system disorders Neutropenia	15.6% 15/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	11.5% 11/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	20.8% 20/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Blood and lymphatic system disorders Thrombocytopenia	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Ear and labyrinth disorders Tinnitus	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Ear and labyrinth disorders Vertigo	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Endocrine disorders Hypothyroidism	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Eye disorders Dry eye	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Eye disorders Vision blurred	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Abdominal pain	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Abdominal pain upper	11.5% 11/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	10.4% 10/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Aphthous stomatitis	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Constipation	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	10.4% 10/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Diarrhoea	14.6% 14/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	10.4% 10/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	17.7% 17/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Dry mouth	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Dyspepsia	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Nausea	20.8% 20/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	36.5% 35/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	31.2% 30/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Stomatitis	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Gastrointestinal disorders Vomiting	9.4% 9/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	11.5% 11/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	13.5% 13/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Asthenia	16.7% 16/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	19.8% 19/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	20.8% 20/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Chills	11.5% 11/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	14.6% 14/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	12.5% 12/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Fatigue	37.5% 36/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	38.5% 37/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	37.5% 36/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Influenza like illness	15.6% 15/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	14.6% 14/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	19.8% 19/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Injection site reaction	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Irritability	14.6% 14/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	19.8% 19/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	15.6% 15/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Oedema peripheral	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Pain	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	8.3% 8/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
General disorders Pyrexia	14.6% 14/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	14.6% 14/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	15.6% 15/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Infections and infestations Bronchitis	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Infections and infestations Influenza	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Investigations Weight decreased	13.5% 13/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Investigations White blood cell count decreased	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Metabolism and nutrition disorders Decreased appetite	20.8% 20/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	16.7% 16/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	24.0% 23/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Musculoskeletal and connective tissue disorders Arthralgia	13.5% 13/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	17.7% 17/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	16.7% 16/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Musculoskeletal and connective tissue disorders Back pain	8.3% 8/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	8.3% 8/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	8.3% 8/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Musculoskeletal and connective tissue disorders Myalgia	17.7% 17/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	20.8% 20/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	26.0% 25/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Nervous system disorders Disturbance in attention	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Nervous system disorders Dizziness	12.5% 12/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	8.3% 8/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	12.5% 12/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Nervous system disorders Dysgeusia	16.7% 16/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	25.0% 24/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Nervous system disorders Headache	29.2% 28/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	34.4% 33/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	36.5% 35/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Nervous system disorders Syncope	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Psychiatric disorders Anxiety	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Psychiatric disorders Depression	21.9% 21/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	10.4% 10/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	12.5% 12/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Psychiatric disorders Insomnia	25.0% 24/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	32.3% 31/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	29.2% 28/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Psychiatric disorders Sleep disorder	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Respiratory, thoracic and mediastinal disorders Cough	15.6% 15/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	18.8% 18/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	21.9% 21/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Respiratory, thoracic and mediastinal disorders Dyspnoea	9.4% 9/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	9.4% 9/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	18.8% 18/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Respiratory, thoracic and mediastinal disorders Dyspnoea exertional	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	4.2% 4/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Respiratory, thoracic and mediastinal disorders Epistaxis	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	7.3% 7/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Respiratory, thoracic and mediastinal disorders Oropharyngeal pain	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	8.3% 8/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Alopecia	18.8% 18/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	16.7% 16/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	25.0% 24/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Dermatitis	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Dry skin	20.8% 20/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	13.5% 13/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	19.8% 19/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Eczema	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	2.1% 2/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Erythema	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Night sweats	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	1.0% 1/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	5.2% 5/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Pruritus	28.1% 27/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	30.2% 29/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	19.8% 19/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Rash	12.5% 12/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	22.9% 22/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	18.8% 18/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Skin and subcutaneous tissue disorders Rash pruritic	0.00% 0/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	3.1% 3/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.	6.2% 6/96 The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.

Additional Information

Pfizer ClinicalTrials.gov Call Center

Pfizer, Inc.

Phone: 1-800-718-1021

Email: ClinicalTrials.gov_Inquiries@pfizer.com

Results disclosure agreements

• Principal investigator is a sponsor employee Pfizer has the right to review disclosures, requesting a delay of less than 60 days. Investigator will postpone single center publications until after disclosure of pooled data (all sites), less than 12 months from study completion/termination at all participating sites. Investigator may not disclose previously undisclosed confidential information other than study results.
• Publication restrictions are in place

Restriction type: OTHER