for people ages 18-80 (full criteria)
at La Jolla, California and other locations
study started
estimated completion



This study will evaluate the effect of each dose of MK-3655 versus placebo on the percentage of individuals with NASH resolution without worsening of fibrosis after 52 weeks. The primary hypothesis of the study is that at least 1 dose of MK-3655 is superior to placebo with respect to the percentage of individuals with NASH resolution without worsening of fibrosis after 52 weeks.

Official Title

A Phase 2b Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of MK-3655 in Individuals With Pre-cirrhotic Nonalcoholic Steatohepatitis.


Nonalcoholic Steatohepatitis, Non-alcoholic fatty liver disease, Fatty Liver


You can join if…

Open to people ages 18-80

  1. Has histological confirmation of NASH
  2. Is a male or female aged 18 years to 80 years (in Japan and Taiwan aged 20 to 80 years)
  3. Has a body mass index (BMI) ≥25 kg/m2 and ≤50 kg/m2 and stable weight for the past 3 months

  4. Has no history of Type 2 diabetes mellitus (T2DM) OR a history of T2DM controlled by diet or stable doses of antihyperglycemic agents (AHAs)
  5. Contraceptive use by male participants should be consistent with local regulations.
  6. A female participant is eligible to participate if she is not pregnant or breastfeeding, and she is not a woman of child-bearing potential (WOCBP) OR she is a WOCBP and uses a contraceptive method that is highly effective during the intervention period and for at least 16 weeks after the last dose of study intervention.

You CAN'T join if...

  1. Has presence of cirrhosis on liver biopsy
  2. Has Type 1 diabetes
  3. Has a history of malignancy, unless cancer free ≥5 years, or is under evaluation for active or suspected malignancy except for adequately treated basal cell or squamous cell skin cancer or in situ cervical cancer
  4. Has a history of bariatric surgery ≤5 years before study participation
  5. Has undergone a major surgical procedure ≤3 months before study participation or has major surgery planned during the study
  6. Has a history or evidence of chronic liver disease other than NASH. Individuals with a history of Hepatitis B or C may be eligible for participation.
  7. Has significant systemic or major illnesses other than liver disease, including recent events (≤6 months before study entry) of congestive heart failure, unstable coronary artery disease, arterial revascularization, pulmonary disease, renal failure, stroke, transient ischemic attack, or organ transplantation


  • UCSD - Altman Clinical and Translational Research Institute -UC San Diego NAFLD Research Center ( Si
    La Jolla California 92037 United States
  • Velocity Clinical Research, Santa Ana ( Site 9002)
    Santa Ana California 92704 United States


in progress, not accepting new patients
Start Date
Completion Date
Merck Sharp & Dohme LLC
Phase 2 research study
Study Type
Expecting 328 study participants
Last Updated