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.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 75 Years |
| Sex | All |
| Enrollment | 1740 (estimated) |
| Sponsor | GlaxoSmithKline Industry-sponsored |
| Locations | 30 sites (Little Rock, Arkansas and 29 other locations) |
| Status | Recruiting |
| Started | July 22, 2026 |
| Main results expected | June 23, 2033 |
| Study ends | August 24, 2033 |
| Registry record updated | November 5, 2026 |
| Trial ID | NCT07701993 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
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GSK Investigational Site
Little Rock, Arkansas, United States Recruiting -
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Folsom, California, United States Recruiting -
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Santa Maria, California, United States Recruiting -
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Cape Coral, Florida, United States Recruiting -
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Fort Myers, Florida, United States Recruiting -
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Hialeah, Florida, United States Recruiting
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Homestead, Florida, United States Recruiting -
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Kissimmee, Florida, United States Recruiting -
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Miami, Florida, United States Recruiting -
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Miami, Florida, United States Recruiting -
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Ocala, Florida, United States Recruiting -
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University Park, Florida, United States Recruiting -
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St Louis, Missouri, United States Recruiting -
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Morehead City, North Carolina, United States Recruiting -
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Westlake, Ohio, United States Recruiting -
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Arlington, Texas, United States Recruiting -
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Bellaire, Texas, United States Recruiting -
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Dallas, Texas, United States Recruiting -
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Humble, Texas, United States Recruiting -
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San Antonio, Texas, United States Recruiting -
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San Antonio, Texas, United States Recruiting -
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Waco, Texas, United States Recruiting -
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West Jordan, Utah, United States Recruiting -
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Manassas, Virginia, United States Recruiting -
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Ōgaki, Gifu, Japan Recruiting -
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Kawasaki-shi, Japan Recruiting
Study contacts
- Study coordinator: US GSK Clinical Trials Call Center
- Email: GSKClinicalSupportHD@gsk.com
- Phone: 877-379-3718
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Efimosfermin vs. placebo in adults with compensated cirrhosis from MASH
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.