A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of MK-4482 for the Prevention of COVID-19 (Laboratory-confirmed SARS-CoV-2 Infection With Symptoms) in Adults Residing With a Person With COVID-19 (MOVe-AHEAD)

  • days left to enroll
  • participants needed
  • sponsor
    Merck Sharp & Dohme LLC
Updated on 22 October 2022
Accepts healthy volunteers


The purpose of the study is to assess if the study medication (molnupiravir, MK-4482) will prevent symptomatic coronavirus disease 2019 (COVID-19) in adults who live with someone with confirmed COVID-19 infection. This is a phase 3, multicenter, randomized, double-blind, placebo-controlled study; half of the study participants will receive molnupiravir twice daily by mouth and the other half will receive a placebo. The primary objectives of the study are to determine if molnupiravir prevents symptomatic COVID-19 disease and to evaluate its safety and tolerability. All participants who develop COVID-19 during the study are still eligible for any COVID-19 treatment recommended by their doctor.

Condition Coronavirus Disease (COVID-19)
Treatment Placebo, Molnupiravir
Clinical Study IdentifierNCT04939428
SponsorMerck Sharp & Dohme LLC
Last Modified on22 October 2022


Yes No Not Sure

Inclusion Criteria

Lives in a household with an index case where the index case is a person with documented COVID-19 (laboratory-confirmed SARS-CoV-2 infection with symptoms case) and must have 1) a first detectable SARS-CoV-2 test result from a sample collected within ≤5 days prior to randomization of the participant, and 2) at least 1 symptom attributable to COVID-19 (e.g., fever, difficulty breathing)
Does not have confirmed or suspected COVID-19
Is willing and able to take oral medication
For males, agrees to be abstinent from penile-vaginal intercourse OR agrees to use a highly effective contraceptive method while receiving study drug and for ≥3 months after the last dose of study drug
Is female and not pregnant/breastfeeding and at least one of the following applies during the study and for ≥4 days after: is not a woman of childbearing potential (WOCBP), is a WOCBP and uses highly effective contraception (low user dependency method OR a user dependent hormonal method in combination with a barrier method), or is a WOCBP who is abstinent from heterosexual intercourse

Exclusion Criteria

Has a prior history of laboratory-confirmed SARS-CoV-2 infection (with or without symptoms) within 6 months prior to randomization
Has either of the following: human immunodeficiency virus (HIV) with a recent viral load >50 copies/mL (regardless of CD4 count) or an acquired immunodeficiency syndrome (AIDS)-defining illness
Has a history of hepatitis B virus (HBV) or hepatitis C virus (HCV) infection with any of the following: cirrhosis, end-stage liver disease, hepatocellular carcinoma; aspartate transaminase (AST) and/or (ALT) >3x upper limit of normal at screening
Has hypersensitivity or other contraindication to any of the components of the study interventions as determined by the investigator
Has any condition for which, in the opinion of the investigator, participation would not be in the best interest of the participant or that could prevent, limit, or confound the protocol-specified assessments including but not limited to participants with conditions that could limit gastrointestinal absorption of capsule contents
Has received, is taking, or is anticipated to require any prohibited therapies
Has received a COVID-19 vaccination with the first dose ≥7 days prior to randomization
Is unwilling to abstain from participating in another interventional clinical study through Day 29 with an investigational compound or device, including those for COVID-19 therapeutics
Is living in a household with >10 people
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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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