A Clinical Study to Investigate the Safety and Tolerability of Efimosfermin Alfa Injection in Participants With Known or Suspected F2- or F3-stage MASH

NCT ID: NCT07221188

Last Updated: 2026-01-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

1250 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-12-12

Study Completion Date

2028-03-24

Brief Summary

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This study will evaluate the safety and tolerability of Efimosfermin Alfa for participants with known or suspected MASH with fibrosis consistent with stage F2 or F3.

Detailed Description

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Conditions

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Non-alcoholic Fatty Liver Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators
This is a double blind study.

Study Groups

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Efimosfermin Alfa Dose Level 1

Participants randomized to this group will receive Efimosfermin Alfa at dose level 1

Group Type EXPERIMENTAL

Efimosfermin Alfa

Intervention Type DRUG

Efimosfermin Alfa will be administered

Efimosfermin Alfa Dose Level 2

Participants randomized to this group will receive Efimosfermin Alfa at dose level 2

Group Type EXPERIMENTAL

Efimosfermin Alfa

Intervention Type DRUG

Efimosfermin Alfa will be administered

Placebo

Participants randomized to this group will receive Placebo

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Placebo will be administered

Interventions

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Efimosfermin Alfa

Efimosfermin Alfa will be administered

Intervention Type DRUG

Placebo

Placebo will be administered

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Able and willing to understand and sign a written informed consent form (ICF) that must be obtained prior to the initiation of study procedures
* Age \>=18 through \<=75 years at enrolment
* History or presence of 2 or more of the 5 components of metabolic syndrome per American Heart Association definition
* History or presence of known or suspected MASH

Exclusion Criteria

* ALT or AST \>=5 × upper limit of normal (ULN)
* Total bilirubin (BILI) \>=1.3 milligram per deciliter (mg/dL). Individuals with documented Gilbert's syndrome may be enrolled if they experienced an isolated increase in total BILI of \>=1.3 mg/dL and direct BILI is \<=20% of total BILI; otherwise, the individual will be excluded.
* Serum albumin \<=3.5 grams per deciliter (g/dL)
* International normalized ratio (INR) \>=1.3 not due to therapeutic anticoagulation. Individuals receiving chronic anticoagulant treatment with higher INR values may be enrolled at the discretion of the Investigator and Study Medical Monitor.
* Alkaline phosphatase (ALP) \>=2 × ULN
* Platelet (PLT) count \<140 000 per (/) cubic millimeter (mm\^3); individuals with a PLT count between 110,000/mm\^3 and 140,000/mm\^3 may be enrolled after discussion with the Study Medical Monitor
* Serum creatinine \>=1.5 mg/dL or creatinine clearance \<=60 milliliter (mL)/minute (min)/1.73 square meter by Chronic Kidney Disease Epidemiology Collaboration equation.
* HbA1c \>=9.0%
* Model for End-Stage Liver Disease (MELD) 3.0 score \>=12 unless the score is elevated in the absence of liver dysfunction (eg, Gilbert's syndrome)
* Phosphatidylethanol (PEth) \>=80 nanogram per milliliter (ng/mL) at Screening
* Known co-infection with any of the following: a. Human immunodeficiency virus; b. Hepatitis B virus; c. Hepatitis C virus (HCV); d. Hepatitis D virus; or e. Hepatitis E virus.
* Chronic liver disease from any other cause including, but not limited to, alcoholic liver disease; evidence of portal hypertension; viral hepatitis, or any history or evidence of cirrhosis; or decompensated liver disease such as clinical ascites, bleeding gastroesophageal varices, hepatorenal syndrome, or hepatic encephalopathy prior to Screening or Day 1.
* Current or history of excessive alcohol intake for \>=3 months within the 12-month period prior to Screening
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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GlaxoSmithKline

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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GSK Clinical Trials

Role: STUDY_DIRECTOR

GlaxoSmithKline

Locations

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GSK Investigational Site

Miami, Florida, United States

Site Status RECRUITING

GSK Investigational Site

Miami, Florida, United States

Site Status RECRUITING

GSK Investigational Site

Ocala, Florida, United States

Site Status RECRUITING

GSK Investigational Site

St Louis, Missouri, United States

Site Status RECRUITING

GSK Investigational Site

San Antonio, Texas, United States

Site Status RECRUITING

GSK Investigational Site

Waco, Texas, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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US GSK Clinical Trials Call Center

Role: CONTACT

877-379-3718

EU GSK Clinical Trials Call Center

Role: CONTACT

+44 (0) 20 89904466

Facility Contacts

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US GSK Clinical Trials Call Center

Role: primary

877-379-3718

EU GSK Clinical Trials Call Centre

Role: backup

+44 (0) 20 8990 4466

US GSK Clinical Trials Call Center

Role: primary

877-379-3718

EU GSK Clinical Trials Call Centre

Role: backup

+44 (0) 20 8990 4466

US GSK Clinical Trials Call Center

Role: primary

877-379-3718

EU GSK Clinical Trials Call Centre

Role: backup

+44 (0) 20 8990 4466

US GSK Clinical Trials Call Center

Role: primary

877-379-3718

EU GSK Clinical Trials Call Centre

Role: backup

+44 (0) 20 8990 4466

US GSK Clinical Trials Call Center

Role: primary

877-379-3718

EU GSK Clinical Trials Call Centre

Role: backup

+44 (0) 20 8990 4466

US GSK Clinical Trials Call Center

Role: primary

877-379-3718

EU GSK Clinical Trials Call Centre

Role: backup

+44 (0) 20 8990 4466

Other Identifiers

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2025-523674-16

Identifier Type: OTHER

Identifier Source: secondary_id

306246

Identifier Type: -

Identifier Source: org_study_id

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