Trial Outcomes & Findings for Study of Nitazoxanide, Peginterferon Alfa-2a and Ribavirin in Treatment-Naive Hepatitis C Patients (NCT NCT00637923)

NCT ID: NCT00637923

Last Updated: 2014-02-10

Results Overview

Hepatitis C Virus Ribonucleic Acid (HCV RNA) below lower limit of detection 24 weeks after the end of treatment. All others were considered non-responders.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

112 participants

Primary outcome timeframe

24 weeks after end of treatment

Results posted on

2014-02-10

Participant Flow

This study recruited patients from 13 study centers in the United States, including 2 Veterans Administration hospitals.

Participant milestones

Participant milestones
Measure
NTZ+PR
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Overall Study
STARTED
75
37
Overall Study
COMPLETED
45
18
Overall Study
NOT COMPLETED
30
19

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Study of Nitazoxanide, Peginterferon Alfa-2a and Ribavirin in Treatment-Naive Hepatitis C Patients

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
NTZ+PR
n=75 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=37 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Total
n=112 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
Age, Categorical
Between 18 and 65 years
74 Participants
n=93 Participants
37 Participants
n=4 Participants
111 Participants
n=27 Participants
Age, Categorical
>=65 years
1 Participants
n=93 Participants
0 Participants
n=4 Participants
1 Participants
n=27 Participants
Age, Continuous
50 years
STANDARD_DEVIATION 7 • n=93 Participants
51 years
STANDARD_DEVIATION 8 • n=4 Participants
50 years
STANDARD_DEVIATION 7 • n=27 Participants
Sex: Female, Male
Female
26 Participants
n=93 Participants
13 Participants
n=4 Participants
39 Participants
n=27 Participants
Sex: Female, Male
Male
49 Participants
n=93 Participants
24 Participants
n=4 Participants
73 Participants
n=27 Participants
Region of Enrollment
United States
75 participants
n=93 Participants
37 participants
n=4 Participants
112 participants
n=27 Participants

PRIMARY outcome

Timeframe: 24 weeks after end of treatment

Hepatitis C Virus Ribonucleic Acid (HCV RNA) below lower limit of detection 24 weeks after the end of treatment. All others were considered non-responders.

Outcome measures

Outcome measures
Measure
NTZ+PR
n=75 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=37 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Sustained Virologic Response (HCV RNA Below Lower Limit of Detection)
Responders
32 participants
13 participants
Sustained Virologic Response (HCV RNA Below Lower Limit of Detection)
Non-responders
43 participants
24 participants

SECONDARY outcome

Timeframe: At end of treatment

Hepatitis C Virus Ribonucleic Acid (HCV RNA) below lower limit of detection at the end of treatment. All others were considered non-responders.

Outcome measures

Outcome measures
Measure
NTZ+PR
n=75 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=37 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
End of Treatment Response (HCV RNA Below Lower Limit of Detection)
Responders
46 participants
18 participants
End of Treatment Response (HCV RNA Below Lower Limit of Detection)
Non-responders
29 participants
19 participants

SECONDARY outcome

Timeframe: After 12 weeks combination treatment

Hepatitis C Virus Ribonucleic Acid (HCV RNA) below lower limit of detection after 12 weeks of combination therapy.

Outcome measures

Outcome measures
Measure
NTZ+PR
n=75 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=37 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Early Virologic Response (HCV RNA Below Lower Limit of Detection)
Responders
45 participants
18 participants
Early Virologic Response (HCV RNA Below Lower Limit of Detection)
Non-responders
30 participants
19 participants

SECONDARY outcome

Timeframe: After 4 weeks combination treatment

Hepatitis C Virus Ribonucleic Acid (HCV RNA) below lower limit of detection after 4 weeks of combination therapy.

Outcome measures

Outcome measures
Measure
NTZ+PR
n=75 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=37 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Rapid Virologic Response (HCV RNA Below Lower Limit of Detection)
Responders
9 participants
7 participants
Rapid Virologic Response (HCV RNA Below Lower Limit of Detection)
Non-responders
66 participants
30 participants

SECONDARY outcome

Timeframe: From baseline to week 8

Population: This analysis was conducted using only data for patients that completed the baseline through week 8 time points.

This analysis was conducted using a comparison of changes in Alanine aminotransferase (ALT) from baseline through week 8, week 16, end of treatment and end of follow up.

Outcome measures

Outcome measures
Measure
NTZ+PR
n=71 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=35 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Changes in ALT
Remains Elevated
23 participants
5 participants
Changes in ALT
Elevated to Normal
29 participants
11 participants
Changes in ALT
Remains Normal
16 participants
17 participants
Changes in ALT
Normal to Elevated
3 participants
2 participants

SECONDARY outcome

Timeframe: From baseline to week 16

Population: This analysis was conducted using only data for patients that completed the baseline through week 16 time points.

This analysis was conducted using a comparison of changes in Alanine aminotransferase (ALT) from baseline through week 8, week 16, end of treatment and end of follow up

Outcome measures

Outcome measures
Measure
NTZ+PR
n=68 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=31 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Changes in ALT
Remains Elevated
12 participants
4 participants
Changes in ALT
Elevated to Normal
38 participants
11 participants
Changes in ALT
Remains Normal
17 participants
15 participants
Changes in ALT
Normal to Elevated
1 participants
1 participants

SECONDARY outcome

Timeframe: From baseline to end of treatment

Population: This analysis was conducted using only data for patients that completed the baseline through end of treatment time points.

This analysis was conducted using a comparison of changes in Alanine aminotransferase (ALT) from baseline through week 8, week 16, end of treatment and end of follow up.

Outcome measures

Outcome measures
Measure
NTZ+PR
n=45 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=18 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Changes in ALT
Remains Elevated
4 participants
3 participants
Changes in ALT
Elevated to Normal
28 participants
6 participants
Changes in ALT
Remains Normal
13 participants
9 participants
Changes in ALT
Normal to Elevated
0 participants
0 participants

SECONDARY outcome

Timeframe: From baseline to end of follow up

Population: This analysis was conducted using only data for patients that completed the baseline through the end of follow-up time points.

This analysis was conducted using a comparison of changes in Alanine aminotransferase (ALT) from baseline through week 8, week 16, end of treatment and end of follow up.

Outcome measures

Outcome measures
Measure
NTZ+PR
n=45 Participants
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=18 Participants
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Changes in ALT
Remains Elevated
9 participants
2 participants
Changes in ALT
Elevated to Normal
23 participants
7 participants
Changes in ALT
Remains Normal
13 participants
8 participants
Changes in ALT
Normal to Elevated
0 participants
1 participants

Adverse Events

NTZ+PR

Serious events: 12 serious events
Other events: 73 other events
Deaths: 0 deaths

Placebo+PR

Serious events: 7 serious events
Other events: 37 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
NTZ+PR
n=75 participants at risk
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=37 participants at risk
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Gastrointestinal disorders
PAIN ABDO
1.3%
1/75 • Number of events 1 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Gastrointestinal disorders
DIARRHEA
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
DYSPNEA
4.0%
3/75 • Number of events 3 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Blood and lymphatic system disorders
ANEMIA
1.3%
1/75 • Number of events 1 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
PNEUMONIA
1.3%
1/75 • Number of events 1 • 1 year, 10 months
10.8%
4/37 • Number of events 4 • 1 year, 10 months
Eye disorders
RETINAL DIS
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
CARCINOMA LUNG
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Gastrointestinal disorders
GASTROENTERITIS
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
PNEUMONIA ASPIR
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Cardiac disorders
INFARCT MYOCARD
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Renal and urinary disorders
KIDNEY FAIL
1.3%
1/75 • Number of events 1 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Metabolism and nutrition disorders
DEHYDRAT
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Gastrointestinal disorders
CONSTIP
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Nervous system disorders
SYNCOPE
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Musculoskeletal and connective tissue disorders
BONE FRACT SPONTAN
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Metabolism and nutrition disorders
HYPOKALEM
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Gastrointestinal disorders
HEM GI
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months
Vascular disorders
HYPERTENS
0.00%
0/75 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
General disorders
FEVER
0.00%
0/75 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
EFFUS PLEURAL
0.00%
0/75 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
APNEA
0.00%
0/75 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Cardiac disorders
HEART ARREST
0.00%
0/75 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Nervous system disorders
EMOTION LABIL
0.00%
0/75 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Metabolism and nutrition disorders
HYPERKALEM
0.00%
0/75 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
General disorders
ASTHENIA
1.3%
1/75 • Number of events 1 • 1 year, 10 months
0.00%
0/37 • 1 year, 10 months

Other adverse events

Other adverse events
Measure
NTZ+PR
n=75 participants at risk
One nitazoxanide 500 mg tablet orally with food twice daily (b.i.d.) for 4 weeks followed by 500 mg nitazoxanide b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Placebo+PR
n=37 participants at risk
One placebo tablet orally with food twice daily (b.i.d.) for 4 weeks followed by placebo b.i.d. plus one weekly injection of 180µg of peginterferon α-2a plus weight-based ribavirin for 48 weeks.
Gastrointestinal disorders
Diarrhea
48.0%
36/75 • Number of events 36 • 1 year, 10 months
21.6%
8/37 • Number of events 8 • 1 year, 10 months
Gastrointestinal disorders
Nausea
42.7%
32/75 • Number of events 32 • 1 year, 10 months
27.0%
10/37 • Number of events 10 • 1 year, 10 months
Gastrointestinal disorders
Anorexia
28.0%
21/75 • Number of events 21 • 1 year, 10 months
10.8%
4/37 • Number of events 4 • 1 year, 10 months
Gastrointestinal disorders
Stomatitis Ulcer
13.3%
10/75 • Number of events 10 • 1 year, 10 months
5.4%
2/37 • Number of events 2 • 1 year, 10 months
Gastrointestinal disorders
Vomit
12.0%
9/75 • Number of events 9 • 1 year, 10 months
2.7%
1/37 • Number of events 1 • 1 year, 10 months
Gastrointestinal disorders
Constip
12.0%
9/75 • Number of events 9 • 1 year, 10 months
13.5%
5/37 • Number of events 5 • 1 year, 10 months
Gastrointestinal disorders
Dyspepsia
5.3%
4/75 • Number of events 4 • 1 year, 10 months
16.2%
6/37 • Number of events 6 • 1 year, 10 months
General disorders
Asthenia
69.3%
52/75 • Number of events 52 • 1 year, 10 months
67.6%
25/37 • Number of events 25 • 1 year, 10 months
General disorders
Headache
34.7%
26/75 • Number of events 26 • 1 year, 10 months
40.5%
15/37 • Number of events 15 • 1 year, 10 months
General disorders
Pain
29.3%
22/75 • Number of events 22 • 1 year, 10 months
18.9%
7/37 • Number of events 7 • 1 year, 10 months
General disorders
Fever
20.0%
15/75 • Number of events 15 • 1 year, 10 months
16.2%
6/37 • Number of events 6 • 1 year, 10 months
Gastrointestinal disorders
Pain Abdo
16.0%
12/75 • Number of events 12 • 1 year, 10 months
16.2%
6/37 • Number of events 6 • 1 year, 10 months
General disorders
Chills
14.7%
11/75 • Number of events 11 • 1 year, 10 months
10.8%
4/37 • Number of events 4 • 1 year, 10 months
General disorders
Inject site react
12.0%
9/75 • Number of events 9 • 1 year, 10 months
5.4%
2/37 • Number of events 2 • 1 year, 10 months
General disorders
Flu Synd
8.0%
6/75 • Number of events 6 • 1 year, 10 months
10.8%
4/37 • Number of events 4 • 1 year, 10 months
Nervous system disorders
Insomnia
36.0%
27/75 • Number of events 27 • 1 year, 10 months
27.0%
10/37 • Number of events 10 • 1 year, 10 months
Nervous system disorders
Nervousness
32.0%
24/75 • Number of events 24 • 1 year, 10 months
16.2%
6/37 • Number of events 6 • 1 year, 10 months
Nervous system disorders
Depression
29.3%
22/75 • Number of events 22 • 1 year, 10 months
24.3%
9/37 • Number of events 9 • 1 year, 10 months
Nervous system disorders
Thinking Abnorm
21.3%
16/75 • Number of events 16 • 1 year, 10 months
16.2%
6/37 • Number of events 6 • 1 year, 10 months
Nervous system disorders
Dizziness
16.0%
12/75 • Number of events 12 • 1 year, 10 months
16.2%
6/37 • Number of events 6 • 1 year, 10 months
Nervous system disorders
Emotion labil
13.3%
10/75 • Number of events 10 • 1 year, 10 months
18.9%
7/37 • Number of events 7 • 1 year, 10 months
Skin and subcutaneous tissue disorders
Rash
49.3%
37/75 • Number of events 37 • 1 year, 10 months
29.7%
11/37 • Number of events 11 • 1 year, 10 months
Skin and subcutaneous tissue disorders
Pruritis
32.0%
24/75 • Number of events 24 • 1 year, 10 months
21.6%
8/37 • Number of events 8 • 1 year, 10 months
Skin and subcutaneous tissue disorders
Skin dry
28.0%
21/75 • Number of events 21 • 1 year, 10 months
16.2%
6/37 • Number of events 6 • 1 year, 10 months
Skin and subcutaneous tissue disorders
Alopecia
25.3%
19/75 • Number of events 19 • 1 year, 10 months
8.1%
3/37 • Number of events 3 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
Dyspnea
41.3%
31/75 • Number of events 31 • 1 year, 10 months
32.4%
12/37 • Number of events 12 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
Pharyngitis
17.3%
13/75 • Number of events 13 • 1 year, 10 months
21.6%
8/37 • Number of events 8 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
Cough inc
16.0%
12/75 • Number of events 12 • 1 year, 10 months
10.8%
4/37 • Number of events 4 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
Rhinitis
14.7%
11/75 • Number of events 11 • 1 year, 10 months
8.1%
3/37 • Number of events 3 • 1 year, 10 months
Respiratory, thoracic and mediastinal disorders
Pneumonia
2.7%
2/75 • Number of events 2 • 1 year, 10 months
13.5%
5/37 • Number of events 5 • 1 year, 10 months
Renal and urinary disorders
Urin Abnorm
42.7%
32/75 • Number of events 32 • 1 year, 10 months
5.4%
2/37 • Number of events 2 • 1 year, 10 months
Blood and lymphatic system disorders
Anemia
40.0%
30/75 • Number of events 30 • 1 year, 10 months
29.7%
11/37 • Number of events 11 • 1 year, 10 months
Blood and lymphatic system disorders
Leukopenia
21.3%
16/75 • Number of events 16 • 1 year, 10 months
27.0%
10/37 • Number of events 10 • 1 year, 10 months
Metabolism and nutrition disorders
Weight dec
16.0%
12/75 • Number of events 12 • 1 year, 10 months
16.2%
6/37 • Number of events 6 • 1 year, 10 months
Metabolism and nutrition disorders
Hypercholesterem
0.00%
0/75 • 1 year, 10 months
10.8%
4/37 • Number of events 4 • 1 year, 10 months
Musculoskeletal and connective tissue disorders
Arthralgia
18.7%
14/75 • Number of events 14 • 1 year, 10 months
8.1%
3/37 • Number of events 3 • 1 year, 10 months
Musculoskeletal and connective tissue disorders
Myalgia
14.7%
11/75 • Number of events 11 • 1 year, 10 months
24.3%
9/37 • Number of events 9 • 1 year, 10 months
Vascular disorders
Hypertens
0.00%
0/75 • 1 year, 10 months
10.8%
4/37 • Number of events 4 • 1 year, 10 months

Additional Information

Marc Ayers

Romark Laboratories, L.C.

Phone: 813-282-8544

Results disclosure agreements

  • Principal investigator is a sponsor employee Presentation and/or publication is encouraged provided the Sponsor is notified in advance and given the opportunity to review the manuscript or abstract 30 days prior to its submission for presentation at a scientific meeting or for publication in a scientific journal. The investigators will have complete autonomy regarding the content and wording including the decision of whether or not to publish.
  • Publication restrictions are in place

Restriction type: OTHER