Trial Outcomes & Findings for A Controlled Phase 2a Study to Evaluate the Efficacy of EDP-323 Against Respiratory Syncytial Virus Infection in a Virus Challenge Model (NCT NCT06170242)

NCT ID: NCT06170242

Last Updated: 2025-10-07

Results Overview

Measured by qRT-PCR in nasal samples.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

142 participants

Primary outcome timeframe

Day 1 to Day 12

Results posted on

2025-10-07

Participant Flow

A total of 142 participants were enrolled and inoculated with challenge virus (Respiratory Syncytial Virus \[RSV\]-A Memphis 37b) of which 141 participants were randomized 1:1:1 into one of three treatment groups to receive EDP-323 (at two different doses) or placebo at one site in the United Kingdom between November 2023 and July 2024.

One participant was enrolled and received RSV-A Memphis 37b virus inoculation on Day 0 but was not randomized to receive EDP-323 or matched placebo.

Participant milestones

Participant milestones
Measure
EDP-323 High Dose
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 once daily (QD) for 5 days.
EDP-323 Low Dose
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Enrolled But Not Randomized
Participant received RSV-A Memphis 37b virus inoculation on Day 0 but was not randomized to receive EDP-323 or matched placebo.
Overall Study
STARTED
47
47
47
1
Overall Study
COMPLETED
47
47
46
0
Overall Study
NOT COMPLETED
0
0
1
1

Reasons for withdrawal

Reasons for withdrawal
Measure
EDP-323 High Dose
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 once daily (QD) for 5 days.
EDP-323 Low Dose
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Enrolled But Not Randomized
Participant received RSV-A Memphis 37b virus inoculation on Day 0 but was not randomized to receive EDP-323 or matched placebo.
Overall Study
Lost to Follow-up
0
0
1
1

Baseline Characteristics

A Controlled Phase 2a Study to Evaluate the Efficacy of EDP-323 Against Respiratory Syncytial Virus Infection in a Virus Challenge Model

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
EDP-323 High Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Total
n=141 Participants
Total of all reporting groups
Age, Continuous
29.09 years
STANDARD_DEVIATION 6.372 • n=5 Participants
27.62 years
STANDARD_DEVIATION 5.980 • n=7 Participants
27.91 years
STANDARD_DEVIATION 6.223 • n=5 Participants
28.21 years
STANDARD_DEVIATION 6.182 • n=4 Participants
Sex: Female, Male
Female
15 Participants
n=5 Participants
17 Participants
n=7 Participants
19 Participants
n=5 Participants
51 Participants
n=4 Participants
Sex: Female, Male
Male
32 Participants
n=5 Participants
30 Participants
n=7 Participants
28 Participants
n=5 Participants
90 Participants
n=4 Participants
Race/Ethnicity, Customized
White
39 Participants
n=5 Participants
35 Participants
n=7 Participants
38 Participants
n=5 Participants
112 Participants
n=4 Participants
Race/Ethnicity, Customized
Black or African American
3 Participants
n=5 Participants
7 Participants
n=7 Participants
5 Participants
n=5 Participants
15 Participants
n=4 Participants
Race/Ethnicity, Customized
Asian
2 Participants
n=5 Participants
3 Participants
n=7 Participants
1 Participants
n=5 Participants
6 Participants
n=4 Participants
Race/Ethnicity, Customized
Other
3 Participants
n=5 Participants
2 Participants
n=7 Participants
3 Participants
n=5 Participants
8 Participants
n=4 Participants
Race/Ethnicity, Customized
Hispanic or Latino
1 Participants
n=5 Participants
2 Participants
n=7 Participants
1 Participants
n=5 Participants
4 Participants
n=4 Participants
Race/Ethnicity, Customized
Not Hispanic or Latino
46 Participants
n=5 Participants
45 Participants
n=7 Participants
46 Participants
n=5 Participants
137 Participants
n=4 Participants

PRIMARY outcome

Timeframe: Day 1 to Day 12

Population: Intent-to-treat infected (ITT-I) Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

Measured by qRT-PCR in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Quantitative Reverse Transcription-polymerase Chain Reaction (qRT-PCR): RSV Area Under the Viral Load-time Curve (VL-AUC)
99.05 log10 copies/mL*hours
Standard Deviation 133.325
82.28 log10 copies/mL*hours
Standard Deviation 158.033
657.45 log10 copies/mL*hours
Standard Deviation 396.743

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

Measured by qRT-PCR in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
qRT-PCR: RSV Peak Viral Load (VLPEAK)
2.52 log10 copies/mL
Standard Deviation 2.173
1.99 log10 copies/mL
Standard Deviation 2.711
6.48 log10 copies/mL
Standard Deviation 2.311

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

Measured by qRT-PCR in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
qRT-PCR: Time From the Assessment at the Time of the First Dose of IMP to RSV VLPEAK
2.89 days
Standard Deviation 2.922
3.12 days
Standard Deviation 3.113
3.12 days
Standard Deviation 1.555

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with available data.

The time from the assessment at the time of the first dose of IMP to qRT-viral load negativity was analyzed using the Kaplan-Meier method. Viral load negativity was reached at the first time when the viral load was undetectable (\< lower limit of detection \[LLOD\]) by qRT-PCR, after which no further detectable assessment appeared. Measured by qRT-PCR in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=20 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=17 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
qRT-PCR: Time From the Assessment at the Time of the First Dose of IMP to RSV Viral Load Negativity
2.3 days
Interval 1.0 to 6.5
1.5 days
Interval 0.5 to 6.0
8.5 days
Interval 6.5 to
Upper confidence interval was not reached due to lack of events and the upper bound extending beyond the largest observed time for this group.

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with at least one detectable viral load during qRT-PCR.

Time to first negative slope = time of the timepoint after which there are two consecutive declines in viral load - time of the nearest viral load assessment to the first dose of IMP. Measured by qRT-PCR in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=13 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=9 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=27 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
qRT-PCR: Time From the Assessment at the Time of the First Dose of IMP to First Negative Slope of RSV Viral Load
0.77 days
Standard Deviation 0.954
1.33 days
Standard Deviation 2.360
2.60 days
Standard Deviation 1.632

SECONDARY outcome

Timeframe: Up to Day 16

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with at least one detectable viral load during qRT-PCR.

Calculated as the slope of the RSV viral load over time from time of RSV VLPEAK to 1, 2, 3, and 4 days later. Estimates for fixed effects of a mixed linear model, modeling the viral load from peak up to the 4 following days, with time from VLPEAK, group and interaction between time and group as fixed effects and a random intercept within each participant. The model was a distinct analysis for the EDP-323 high dose and placebo groups where the estimates for both groups are model-dependent and impacted by the overall model. A negative slope indicated that the viral load decreased over time. Measured by qRT-PCR in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=17 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=28 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
qRT-PCR: RSV Viral Load Clearance Rate - EDP-323 High Dose
-0.5650 log10 copies/mL/day
Interval -0.7539 to -0.3761
-1.3299 log10 copies/mL/day
Interval -1.4775 to -1.1823

SECONDARY outcome

Timeframe: Up to Day 16

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with at least one detectable viral load during qRT-PCR.

Calculated as the slope of the RSV viral load over time from time of RSV VLPEAK to 1, 2, 3, and 4 days later. Estimates for fixed effects of a mixed linear model, modeling the viral load from peak up to the 4 following days, with time from VLPEAK, group and interaction between time and group as fixed effects and a random intercept within each participant. The model was a distinct analysis for the EDP-323 low dose and placebo groups where the estimates for both groups are model-dependent and impacted by the overall model. A negative slope indicated that the viral load decreased over time. Measured by qRT-PCR in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=10 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=28 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
qRT-PCR: RSV Viral Load Clearance Rate - EDP-323 Low Dose
-0.5480 log10 copies/mL/day
Interval -0.8182 to -0.2778
-1.3298 log10 copies/mL/day
Interval -1.4896 to -1.1699

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

Measured by viral culture (plaque assay) in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Viral Culture: RSV VL-AUC
3.82 log10 plaque-forming units (PFU)/mL*h
Standard Deviation 9.333
6.21 log10 plaque-forming units (PFU)/mL*h
Standard Deviation 15.448
227.04 log10 plaque-forming units (PFU)/mL*h
Standard Deviation 189.998

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

Measured by viral culture (plaque assay) in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Viral Culture: RSV VLPEAK
0.04 log10 PFU/mL
Standard Deviation 0.198
0.16 log10 PFU/mL
Standard Deviation 0.569
3.45 log10 PFU/mL
Standard Deviation 2.191

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

Measured by viral culture (plaque assay) in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Viral Culture: Time From the Assessment at the Time of the First Dose of IMP to RSV VLPEAK
5.82 days
Standard Deviation 2.980
5.78 days
Standard Deviation 3.304
3.95 days
Standard Deviation 2.290

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with available data.

Measured by viral culture (plaque assay) in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=6 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=6 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Viral Culture: Time From the Assessment at the Time of the First Dose of IMP to RSV Viral Load Negativity
0.5 days
Interval 0.5 to
Upper confidence interval was not reached due to lack of events.
0.5 days
Interval 0.5 to
Upper confidence interval was not reached due to lack of events.
4.5 days
Interval 4.5 to 5.5

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with at least one detectable viral load during plaque assay.

Measured by viral culture (plaque assay) in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=3 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=3 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Viral Culture: Time From the Assessment at the Time of the First Dose of IMP to First Negative Slope of RSV Viral Load
0.00 days
Standard Deviation 0.000
0.00 days
Standard Deviation 0.000
2.92 days
Standard Deviation 1.739

SECONDARY outcome

Timeframe: Up to Day 16

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with at least one detectable viral load during plaque assay.

Calculated as the slope of the RSV viral load over time from time of RSV VLPEAK to 1, 2, 3, and 4 days later. Estimates for fixed effects of a mixed linear model, modeling the viral load from peak up to the 4 following days, with time from VLPEAK, group and interaction between time and group as fixed effects and a random intercept within each participant. A negative slope indicated that the viral load decreased over time. Measured by viral culture in nasal samples.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=3 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=3 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Viral Culture: RSV Viral Load Clearance Rate
-0.1336 log10 PFU/mL/day
Interval -0.7642 to 0.497
-0.2565 log10 PFU/mL/day
Interval -0.699 to 0.1861
-1.1124 log10 PFU/mL/day
Interval -1.2522 to -0.9727

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

An individual TSS (10-items) was derived at each assessment of the diary card as the sum of the scores given to the 10 following symptoms on that symptom score card, giving a score between 0 and 3: * Runny nose * Stuffy nose * Sneezing * Sore throat * Earache * Malaise/Tiredness * Headache * Muscle and/or Joint Ache * Cough * Shortness of breath TSS ranged from 0 to 30 with higher TSS indicating a higher disease burden and thus a worse outcome. The calculation of the TSS-AUC was performed on the TSS measured 3 times a day using the trapezoidal summation rule based on actual time intervals in hours.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Area Under the Total Symptom Score (TSS)-Time Curve (TSS-AUC)
127.31 score*hours
Standard Deviation 149.221
82.67 score*hours
Standard Deviation 100.412
369.10 score*hours
Standard Deviation 330.397

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

Defined as the highest recorded value of TSS. An individual TSS (10-items) was derived at each assessment of the diary card as the sum of the scores given to the 10 following symptoms on that symptom score card, giving a score between 0 and 3: * Runny nose * Stuffy nose * Sneezing * Sore throat * Earache * Malaise/Tiredness * Headache * Muscle and/or Joint Ache * Cough * Shortness of breath TSS ranged from 0 to 30 with higher TSS indicating a higher disease burden and thus a worse outcome.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Peak TSS
2.65 score on a scale
Standard Deviation 1.765
2.35 score on a scale
Standard Deviation 2.673
5.77 score on a scale
Standard Deviation 4.439

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection.

Time to peak TSS = time of peak TSS - time of the nearest TSS assessment to the first dose of IMP. An individual TSS (10-items) was derived at each assessment of the diary card as the sum of the scores given to the 10 following symptoms on that symptom score card, giving a score between 0 and 3: * Runny nose * Stuffy nose * Sneezing * Sore throat * Earache * Malaise/Tiredness * Headache * Muscle and/or Joint Ache * Cough * Shortness of breath TSS ranged from 0 to 30 with higher TSS indicating a higher disease burden and thus a worse outcome.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=30 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Time to Peak TSS
2.00 days
Standard Deviation 2.403
2.84 days
Standard Deviation 3.125
3.36 days
Standard Deviation 2.065

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive of participants with at least one TSS \>0 only.

Time to resolution from peak TSS = time of the first 24-hour symptom-free time point - time of peak TSS. An individual TSS (10-items) was derived at each assessment of the diary card as the sum of the scores given to the 10 following symptoms on that symptom score card, giving a score between 0 and 3: * Runny nose * Stuffy nose * Sneezing * Sore throat * Earache * Malaise/Tiredness * Headache * Muscle and/or Joint Ache * Cough * Shortness of breath TSS ranged from 0 to 30 with higher TSS indicating a higher disease burden and thus a worse outcome.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=24 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=16 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=28 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Time to Resolution From Peak TSS
2.16 days
Standard Deviation 1.922
2.58 days
Standard Deviation 2.415
2.93 days
Standard Deviation 1.789

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with available data.

Each participant was given pre-weighed packets of paper tissues. Participants were asked to place single tissues used for nose blowing or sneezing into a specified collection bag (for that participant only).

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=29 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Total Weight of Nasal Discharge (Mucus) Produced
6.12 grams
Standard Deviation 6.564
9.49 grams
Standard Deviation 20.537
16.44 grams
Standard Deviation 22.152

SECONDARY outcome

Timeframe: Day 1 to Day 12

Population: ITT-I Analysis Set: All participants having received challenge virus, randomized, and having received at least one dose of IMP, and meeting the criterion for laboratory-confirmed RSV infection. Inclusive only of participants with available data.

Each participant was given pre-weighed packets of paper tissues. Participants were asked to place single tissues used for nose blowing or sneezing into a specified collection bag (for that participant only).

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=26 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=23 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=29 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Total Number of Tissues Used
17.62 tissues
Standard Deviation 23.329
16.22 tissues
Standard Deviation 21.457
28.79 tissues
Standard Deviation 27.580

SECONDARY outcome

Timeframe: First Dose: Day 1 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, and 15 hours post-dose) and Day 2 pre-dose; Last Dose: Day 5 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 24, 30, 36, 48, 60, and 72 hours post-dose)

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint.

Plasma pharmacokinetic (PK) parameters for EDP-323 and metabolites (EP-038725 and EP-039082) were estimated using non-compartmental methods. The plasma PK parameters were estimated from the concentration-time profiles. In estimating the PK parameters, below the limit of quantification (BQL) values were set to zero. Actual sampling times, rather than scheduled sampling times, were used in all computations involving sampling times. If the actual time or dose time was missing, the scheduled time could be substituted in order to calculate the PK parameter. In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Maximum Plasma Concentration (Cmax)
Last Dose: EP-038725
1294.19 ng/mL
Standard Deviation 772.921
381.94 ng/mL
Standard Deviation 266.839
Maximum Plasma Concentration (Cmax)
First Dose: EDP-323
1358.47 ng/mL
Standard Deviation 590.191
1453.70 ng/mL
Standard Deviation 627.552
Maximum Plasma Concentration (Cmax)
Last Dose: EDP-323
1703.09 ng/mL
Standard Deviation 746.730
759.38 ng/mL
Standard Deviation 322.938
Maximum Plasma Concentration (Cmax)
First Dose: EP-038725
1225.02 ng/mL
Standard Deviation 753.882
1501.55 ng/mL
Standard Deviation 776.020
Maximum Plasma Concentration (Cmax)
First Dose: EP-039082
5.40 ng/mL
Standard Deviation 5.265
6.59 ng/mL
Standard Deviation 4.923
Maximum Plasma Concentration (Cmax)
Last Dose: EP-039082
6.41 ng/mL
Standard Deviation 5.131
1.40 ng/mL
Standard Deviation 1.346

SECONDARY outcome

Timeframe: First Dose: Day 1 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, and 15 hours post-dose) and Day 2 pre-dose; Last Dose: Day 5 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 24, 30, 36, 48, 60, and 72 hours post-dose)

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint.

Plasma PK parameters for EDP-323 and metabolites (EP-038725 and EP-039082) were estimated using non-compartmental methods. The plasma PK parameters were estimated from the concentration-time profiles. In estimating the PK parameters, BQL values were set to zero. Actual sampling times, rather than scheduled sampling times, were used in all computations involving sampling times. If the actual time or dose time was missing, the scheduled time could be substituted in order to calculate the PK parameter. In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Time to Cmax (Tmax)
Last Dose: EP-039082
3.82 hours
Interval 1.0 to 9.9
2.00 hours
Interval 0.0 to 7.9
Time to Cmax (Tmax)
First Dose: EDP-323
3.98 hours
Interval 1.0 to 10.2
3.92 hours
Interval 1.9 to 9.9
Time to Cmax (Tmax)
Last Dose: EDP-323
4.82 hours
Interval 2.0 to 9.9
4.10 hours
Interval 1.0 to 10.3
Time to Cmax (Tmax)
First Dose: EP-038725
3.97 hours
Interval 1.9 to 10.2
3.85 hours
Interval 1.9 to 9.9
Time to Cmax (Tmax)
Last Dose: EP-038725
4.92 hours
Interval 2.0 to 9.9
3.98 hours
Interval 1.0 to 10.0
Time to Cmax (Tmax)
First Dose: EP-039082
3.00 hours
Interval 0.0 to 9.9
2.97 hours
Interval 0.9 to 9.9

SECONDARY outcome

Timeframe: Day 1 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, and 15 hours post-dose), Day 2 pre-dose, Day 3 pre-dose, Day 4 pre-dose, Day 5 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 24, 30, 36, 48, 60, and 72 hours post-dose)

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint. No participants in the EDP-323 low dose group had quantifiable samples for EP-039082 (below limit of quantification \[BLQ\]) for the analysis of this PK parameter.

Plasma PK parameters for EDP-323 and metabolites (EP-038725 and EP-039082) were estimated using non-compartmental methods. The plasma PK parameters were estimated from the concentration-time profiles. In estimating the PK parameters, BQL values were set to zero. Actual sampling times, rather than scheduled sampling times, were used in all computations involving sampling times. If the actual time or dose time was missing, the scheduled time could be substituted in order to calculate the PK parameter. In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=46 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=46 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Terminal Half-life (t1/2)
EP-038725
16.56 hours
Standard Deviation 3.049
17.16 hours
Standard Deviation 3.103
Terminal Half-life (t1/2)
EDP-323
13.07 hours
Standard Deviation 4.793
12.55 hours
Standard Deviation 4.621
Terminal Half-life (t1/2)
EP-039082
3.89 hours
Standard Deviation 1.346

SECONDARY outcome

Timeframe: Day 1 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, and 15 hours post-dose), Day 2 pre-dose, Day 3 pre-dose, Day 4 pre-dose, Day 5 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 24, 30, 36, 48, 60, and 72 hours post-dose)

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint. No participants in the EDP-323 high dose and EDP-323 low dose groups had quantifiable samples for EP-038725 and EP-039082 (BLQ) for the analysis of this PK parameter.

Plasma PK parameters for EDP-323 and metabolites (EP-038725 and EP-039082) were estimated using non-compartmental methods. The plasma PK parameters were estimated from the concentration-time profiles. In estimating the PK parameters, BQL values were set to zero. Actual sampling times, rather than scheduled sampling times, were used in all computations involving sampling times. If the actual time or dose time was missing, the scheduled time could be substituted in order to calculate the PK parameter. In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=46 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=46 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Apparent Systemic Clearance at Steady-state (CLss/F)
EDP-323
32.39 L/h
Standard Deviation 13.648
24.51 L/h
Standard Deviation 11.383

SECONDARY outcome

Timeframe: Day 1 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, and 15 hours post-dose), Day 2 pre-dose, Day 3 pre-dose, Day 4 pre-dose, Day 5 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 24, 30, 36, 48, 60, and 72 hours post-dose)

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint. No participants in the EDP-323 low dose group had quantifiable samples for EP-039082 (BLQ) for the analysis of this PK parameter.

Plasma PK parameters for EDP-323 and metabolites (EP-038725 and EP-039082) were estimated using non-compartmental methods. The plasma PK parameters were estimated from the concentration-time profiles. In estimating the PK parameters, BQL values were set to zero. Actual sampling times, rather than scheduled sampling times, were used in all computations involving sampling times. If the actual time or dose time was missing, the scheduled time could be substituted in order to calculate the PK parameter. In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=46 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=46 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Terminal Elimination Rate Constant (λz)
EP-038725
0.04 per hour
Standard Deviation 0.009
0.04 per hour
Standard Deviation 0.008
Terminal Elimination Rate Constant (λz)
EDP-323
0.06 per hour
Standard Deviation 0.018
0.06 per hour
Standard Deviation 0.019
Terminal Elimination Rate Constant (λz)
EP-039082
0.17 per hour
Standard Deviation 0.061

SECONDARY outcome

Timeframe: Day 1 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, and 15 hours post-dose), Day 2 pre-dose, Day 3 pre-dose, Day 4 pre-dose, Day 5 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 24, 30, 36, 48, 60, and 72 hours post-dose)

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint. No participants in the EDP-323 high dose and EDP-323 low dose groups had quantifiable samples for EP-038725 and EP-039082 (BLQ) for the analysis of this PK parameter.

Plasma PK parameters for EDP-323 and metabolites (EP-038725 and EP-039082) were estimated using non-compartmental methods. The plasma PK parameters were estimated from the concentration-time profiles. In estimating the PK parameters, BQL values were set to zero. Actual sampling times, rather than scheduled sampling times, were used in all computations involving sampling times. If the actual time or dose time was missing, the scheduled time could be substituted in order to calculate the PK parameter. In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=46 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=46 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Apparent Volume of Distribution at Steady-state (Vss/F)
EDP-323
569.26 liters
Standard Deviation 208.202
402.73 liters
Standard Deviation 143.305

SECONDARY outcome

Timeframe: First Dose: Day 1, 12 and 24 hours post-dose; Last Dose: Day 5, 12 and 24 hours post-dose

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint.

In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
First Dose C24h: EDP-323
351.45 ng/mL
Standard Deviation 166.086
368.54 ng/mL
Standard Deviation 216.140
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
Last Dose C12h: EDP-323
935.04 ng/mL
Standard Deviation 318.005
423.38 ng/mL
Standard Deviation 203.294
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
Last Dose C12h: EP-039082
1.60 ng/mL
Standard Deviation 0.739
1.00 ng/mL
Standard Deviation 0.014
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
Last Dose C24h: EDP-323
493.16 ng/mL
Standard Deviation 250.229
220.69 ng/mL
Standard Deviation 141.715
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
First Dose C12h: EDP-323
711.96 ng/mL
Standard Deviation 265.557
756.02 ng/mL
Standard Deviation 345.633
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
First Dose C12h: EP-038725
189.71 ng/mL
Standard Deviation 94.962
221.48 ng/mL
Standard Deviation 162.256
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
First Dose C24h: EP-038725
52.47 ng/mL
Standard Deviation 27.362
56.57 ng/mL
Standard Deviation 23.845
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
Last Dose C12h: EP-038725
281.01 ng/mL
Standard Deviation 168.564
78.22 ng/mL
Standard Deviation 39.056
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
Last Dose C24h: EP-038725
96.78 ng/mL
Standard Deviation 59.546
30.29 ng/mL
Standard Deviation 14.620
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
First Dose C12h: EP-039082
1.28 ng/mL
Standard Deviation 0.493
1.44 ng/mL
Standard Deviation 0.775
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
First Dose C24h: EP-039082
1.00 ng/mL
Standard Deviation 0.000
1.01 ng/mL
Standard Deviation 0.041
Plasma Concentration at 12 Hours (C12h) and 24 Hours (C24h)
Last Dose C24h: EP-039082
1.04 ng/mL
Standard Deviation 0.166
1.00 ng/mL
Standard Deviation 0.000

SECONDARY outcome

Timeframe: First Dose: Day 1 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, and 15 hours post-dose) and Day 2 pre-dose; Last Dose: Day 5 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 24, 30, 36, 48, 60, and 72 hours post-dose)

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint.

Plasma PK parameters for EDP-323 and metabolites (EP-038725 and EP-039082) were estimated using non-compartmental methods. The AUCs were calculated using linear up/log down method. In estimating the PK parameters, BQL values were set to zero. Actual sampling times, rather than scheduled sampling times, were used in all computations involving sampling times. If the actual time or dose time was missing, the scheduled time could be substituted in order to calculate the PK parameter. In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUC0-last)
First Dose: EDP-323
15626.46 h*ng/mL
Standard Deviation 5982.746
16703.77 h*ng/mL
Standard Deviation 7268.939
Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUC0-last)
Last Dose: EDP-323
31084.37 h*ng/mL
Standard Deviation 13945.732
13816.76 h*ng/mL
Standard Deviation 7801.297
Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUC0-last)
First Dose: EP-038725
7181.42 h*ng/mL
Standard Deviation 3848.438
8319.19 h*ng/mL
Standard Deviation 3563.734
Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUC0-last)
Last Dose: EP-038725
10814.63 h*ng/mL
Standard Deviation 5619.005
3174.73 h*ng/mL
Standard Deviation 1641.754
Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUC0-last)
First Dose: EP-039082
26.11 h*ng/mL
Standard Deviation 21.928
31.34 h*ng/mL
Standard Deviation 28.251
Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUC0-last)
Last Dose: EP-039082
35.35 h*ng/mL
Standard Deviation 28.171
4.77 h*ng/mL
Standard Deviation 4.119

SECONDARY outcome

Timeframe: Last Dose: Day 5 (pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 24, 30, 36, 48, 60, and 72 hours post-dose)

Population: PK Analysis Set: All ITT analysis set participants with at least one post-dose PK result. Inclusive only of participants with available data for each analyte and timepoint.

Plasma PK parameters for EDP-323 and metabolites (EP-038725 and EP-039082) were estimated using non-compartmental methods. The AUCs were calculated using linear up/log down method. In estimating the PK parameters, BQL values were set to zero. Actual sampling times, rather than scheduled sampling times, were used in all computations involving sampling times. If the actual time or dose time was missing, the scheduled time could be substituted in order to calculate the PK parameter. In case of an actual sampling time deviating by \>20% from the scheduled (nominal) time, this plasma concentration was excluded from descriptive statistics in the plasma concentration-time table.

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Area Under the Concentration-time Curve Over the Dosing Interval (AUC0-tau)
Last Dose: EP-039082
48.21 h*ng/mL
Standard Deviation 26.600
7.31 h*ng/mL
Standard Deviation 10.464
Area Under the Concentration-time Curve Over the Dosing Interval (AUC0-tau)
Last Dose: EDP-323
21585.30 h*ng/mL
Standard Deviation 7915.479
9653.80 h*ng/mL
Standard Deviation 4245.794
Area Under the Concentration-time Curve Over the Dosing Interval (AUC0-tau)
Last Dose: EP-038725
8944.82 h*ng/mL
Standard Deviation 4528.012
2588.19 h*ng/mL
Standard Deviation 1379.765

SECONDARY outcome

Timeframe: Day -2 to Day 12

Population: Safety Analysis Set (Treated Participants): All participants having received challenge virus and IMP.

An AE was defined as any untoward medical occurrence in clinical study participants administered a pharmaceutical (investigational or non-investigation) product. An AE does not necessarily have a causal relationship with the study intervention. A serious AE (SAE) was defined as any untoward medical occurrence that, at any dose: * Resulted in death * Was life threatening * Required inpatient hospitalization or prolongation of existing hospitalization * Resulted in persistent disability/incapacity * Was a congenital anomaly/birth defect * Was an important medical event

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Number of Participants With Adverse Events (AEs) up to Discharge
Any AE
13 Participants
15 Participants
15 Participants
Number of Participants With Adverse Events (AEs) up to Discharge
Any SAE
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: Day 1 to Day 28

Population: Safety Analysis Set (Treated Participants): All participants having received challenge virus and IMP.

An AE was defined as any untoward medical occurrence in clinical study participants administered a pharmaceutical (investigational or non-investigation) product. An AE does not necessarily have a causal relationship with the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: * Resulted in death * Was life threatening * Required inpatient hospitalization or prolongation of existing hospitalization * Resulted in persistent disability/incapacity * Was a congenital anomaly/birth defect * Was an important medical event

Outcome measures

Outcome measures
Measure
EDP-323 High Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=47 Participants
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Number of Participants With Treatment-emergent Adverse Events
Any TEAEs
11 Participants
14 Participants
13 Participants
Number of Participants With Treatment-emergent Adverse Events
Any Treatment-emergent SAEs
0 Participants
0 Participants
0 Participants

Adverse Events

EDP-323 High Dose

Serious events: 0 serious events
Other events: 13 other events
Deaths: 0 deaths

EDP-323 Low Dose

Serious events: 0 serious events
Other events: 15 other events
Deaths: 0 deaths

Placebo

Serious events: 0 serious events
Other events: 15 other events
Deaths: 0 deaths

Enrolled But Not Randomized

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

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
EDP-323 High Dose
n=47 participants at risk
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered 600 mg EDP-323 QD for 5 days.
EDP-323 Low Dose
n=47 participants at risk
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered loading dose 600 mg EDP-323 on Day 1 followed by 200 mg EDP-323 QD for the remaining 4 days.
Placebo
n=47 participants at risk
Participants received RSV-A Memphis 37b virus inoculation on Day 0 then orally administered matching placebo QD for 5 days.
Enrolled But Not Randomized
Participant received RSV-A Memphis 37b virus inoculation on Day 0 but was not randomized to receive EDP-323 or matched placebo.
Infections and infestations
Upper respiratory tract infection
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
6.4%
3/47 • Number of events 3 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Infections and infestations
Viral upper respiratory tract infection
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
4.3%
2/47 • Number of events 2 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Infections and infestations
Breast abscess
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Infections and infestations
Epididymitis
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Nervous system disorders
Headache
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
4.3%
2/47 • Number of events 2 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Nervous system disorders
Presyncope
4.3%
2/47 • Number of events 2 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Nervous system disorders
Paraesthesia
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Nervous system disorders
Sensory disturbance
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Nervous system disorders
Syncope
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Gastrointestinal disorders
Diarrhoea
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Gastrointestinal disorders
Dyspepsia
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Gastrointestinal disorders
Food poisoning
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Gastrointestinal disorders
Nausea
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Investigations
Aspartate aminotransferase increased
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
4.3%
2/47 • Number of events 2 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Investigations
Blood creatine phosphokinase increased
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
4.3%
2/47 • Number of events 2 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Investigations
Alanine aminotransferase increased
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Investigations
Diagnostic procedure
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Investigations
Gamma-glutamyltransferase increased
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
General disorders
Non-cardiac chest pain
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
General disorders
Chest discomfort
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
General disorders
Vessel puncture site swelling
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Respiratory, thoracic and mediastinal disorders
Cough
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Respiratory, thoracic and mediastinal disorders
Epistaxis
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Respiratory, thoracic and mediastinal disorders
Oropharyngeal pain
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Respiratory, thoracic and mediastinal disorders
Rhinorrhoea
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Musculoskeletal and connective tissue disorders
Myalgia
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Musculoskeletal and connective tissue disorders
Neck pain
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Musculoskeletal and connective tissue disorders
Pain in extremity
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Skin and subcutaneous tissue disorders
Dry skin
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Skin and subcutaneous tissue disorders
Miliaria
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Skin and subcutaneous tissue disorders
Rash
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Psychiatric disorders
Anxiety
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Psychiatric disorders
Stress
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Blood and lymphatic system disorders
Neutropenia
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Injury, poisoning and procedural complications
Head injury
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Eye disorders
Conjunctival hyperemia
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Nervous system disorders
Dizziness
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
Skin and subcutaneous tissue disorders
Pruritus
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0.00%
0/47 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
2.1%
1/47 • Number of events 1 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP
0/0 • All-cause mortality: Day -2 to Day 28; all adverse events: Day -2 to Day 28
All-cause mortality: Safety Analysis Set - All participants having received challenge virus, regardless of whether they received IMP or not; Adverse events: Safety Analysis Set (Treated Participants) - All participants having received challenge virus and IMP

Additional Information

Medical Monitor

Enanta Pharmaceuticals, Inc.

Phone: +1 6176070800

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place