A Study of Rilematovir (JNJ-53718678) in Adult Outpatients With Respiratory Syncytial Virus (RSV) Infection (PRIMROSE)

    Not Recruiting
  • End date
    Dec 21, 2023
  • participants needed
  • sponsor
    Janssen Research & Development, LLC
Updated on 9 May 2022


The purpose of this study is to evaluate the efficacy of rilematovir compared to placebo with respect to the time to resolution of respiratory syncytial virus (RSV) lower respiratory tract disease (LRTD) symptoms.


Rilematovir is an investigational RSV specific fusion inhibitor currently in development for the treatment of RSV infection in both adult and pediatric populations. The study will include a Screening period (Day -1 to Day 1), a Treatment period (Day 1 to Day 7/8 [depending on timing of first dose]), and a Follow-up period (Day 8/9 to Day 35). The total study duration of the study for each participant will be up to 35 days. The study will evaluate efficacy and safety of RSV in adult outpatients (18-85 years) who are at high risk of RSV related disease progression and have at least moderate RSV disease. The efficacy assessments include evaluation with electronic patient-reported outcome (ePRO) and the safety assessments include evaluations of physical examinations, vital signs, electrocardiograms, clinical laboratory tests, and adverse events.

Condition Respiratory Syncytial Virus
Treatment Placebo, Rilematovir
Clinical Study IdentifierNCT04978337
SponsorJanssen Research & Development, LLC
Last Modified on9 May 2022

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