Clinical trial Recruiting at 30 sites Phase 3 Interventional Ages 18 to 75

Efimosfermin vs placebo in adults with compensated cirrhosis from MASH

Official title: A Phase 3, Double-blind, Randomized, Placebo Controlled, 2-arm Study to Investigate the Safety and Efficacy of Efimosfermin Alfa Injection in Adult Participants With Compensated Cirrhosis Due to Metabolic Dysfunction-associated Steatohepatitis (NEBULA-1)

Run by GlaxoSmithKline · NCT07701993 · Data updated 2026-11-12

This study tests whether efimosfermin helps adults with compensated cirrhosis caused by MASH compared with placebo.

More Metabolic Dysfunction-Associated Steatohepatitis trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment1740 (estimated)
SponsorGlaxoSmithKline
Industry-sponsored
Locations30 sites (Little Rock, Arkansas and 29 other locations)
StatusRecruiting
StartedJuly 22, 2026
Main results expectedJune 23, 2033
Study endsAugust 24, 2033
Registry record updatedNovember 5, 2026
Trial IDNCT07701993 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18–75 with compensated cirrhosis due to MASH and at least two metabolic syndrome components.

Probably not a fit

Patients with decompensated liver disease, other chronic liver conditions, or severe liver enzyme elevations may not benefit and could be excluded.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 3 trial evaluates the safety and efficacy of efimosfermin alpha in adults with compensated cirrhosis due to MASH. Participants will be randomly assigned to receive either efimosfermin or placebo and will be monitored for liver-related outcomes and overall safety. Eligible participants are aged 18–75 with compensated cirrhosis confirmed by non-invasive means and metabolic syndrome features. Exclusion criteria include other chronic liver diseases, decompensated liver disease, liver cancer history, certain diabetes histories, recent pancreatic issues, recent major weight-loss procedures, very high liver enzymes, and excessive alcohol use. The study is led by GlaxoSmithKline with investigational sites in Little Rock and two locations in California.

Why it matters

Potential benefit: If successful, participants may experience improvements in liver function and disease progression, potentially slowing cirrhosis-related outcomes.

How similar studies have gone: Previous similar approaches in liver disease have shown mixed results; this study explores a targeted therapy in a well-defined MASH cirrhosis population.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Participants aged between 18 and 75 years at enrollment.
* Participants with compensated cirrhosis due to MASH, confirmed by non-invasive assessments.
* Participants with history or presence of at least two components of metabolic syndrome.

Exclusion Criteria:

* Participants with other chronic liver diseases.
* Participants with evidence or history of decompensated liver disease or hepatocellular carcinoma.
* Participants with history of Type 1 diabetes mellitus or major Type 2 diabetes complications.
* Participants with history or evidence of chronic pancreatic disease; pancreatic injury or acute pancreatitis within 6 months before screening.
* Participants with a recent history or planned surgical procedures or medications intended to produce significant weight loss.
* Participants with alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>=5 times upper limit normal (ULN).
* Participants with current or history of excessive alcohol intake.

Where it's running

  • GSK Investigational Site
    Little Rock, Arkansas, United States
    Recruiting
  • GSK Investigational Site
    Folsom, California, United States
    Recruiting
  • GSK Investigational Site
    Santa Maria, California, United States
    Recruiting
  • GSK Investigational Site
    Cape Coral, Florida, United States
    Recruiting
  • GSK Investigational Site
    Fort Myers, Florida, United States
    Recruiting
  • GSK Investigational Site
    Hialeah, Florida, United States
    Recruiting
Show 24 more locations
  • GSK Investigational Site
    Homestead, Florida, United States
    Recruiting
  • GSK Investigational Site
    Kissimmee, Florida, United States
    Recruiting
  • GSK Investigational Site
    Lakeland, Florida, United States
    Recruiting
  • GSK Investigational Site
    Miami, Florida, United States
    Recruiting
  • GSK Investigational Site
    Miami, Florida, United States
    Recruiting
  • GSK Investigational Site
    Ocala, Florida, United States
    Recruiting
  • GSK Investigational Site
    University Park, Florida, United States
    Recruiting
  • GSK Investigational Site
    St Louis, Missouri, United States
    Recruiting
  • GSK Investigational Site
    New York, New York, United States
    Recruiting
  • GSK Investigational Site
    Morehead City, North Carolina, United States
    Recruiting
  • GSK Investigational Site
    Westlake, Ohio, United States
    Recruiting
  • GSK Investigational Site
    Arlington, Texas, United States
    Recruiting
  • GSK Investigational Site
    Austin, Texas, United States
    Recruiting
  • GSK Investigational Site
    Austin, Texas, United States
    Recruiting
  • GSK Investigational Site
    Bellaire, Texas, United States
    Recruiting
  • GSK Investigational Site
    Dallas, Texas, United States
    Recruiting
  • GSK Investigational Site
    Humble, Texas, United States
    Recruiting
  • GSK Investigational Site
    San Antonio, Texas, United States
    Recruiting
  • GSK Investigational Site
    San Antonio, Texas, United States
    Recruiting
  • GSK Investigational Site
    Waco, Texas, United States
    Recruiting
  • GSK Investigational Site
    West Jordan, Utah, United States
    Recruiting
  • GSK Investigational Site
    Manassas, Virginia, United States
    Recruiting
  • GSK Investigational Site
    Ōgaki, Gifu, Japan
    Recruiting
  • GSK Investigational Site
    Kawasaki-shi, Japan
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.