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IMPACT TRIAL: Efficacy and Safety of Pemvidutide in Subjects With Nonalcoholic Steatohepatitis (NASH)

A Phase 2, Multicenter, Randomized, Double-blind, Placebo-controlled Study Evaluating the Efficacy and Safety of Pemvidutide in Non-Cirrhotic Subjects With Nonalcoholic Steatohepatitis (NASH)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05989711
Acronym
IMPACT
Enrollment
212
Registered
2023-08-14
Start date
2023-07-27
Completion date
2025-11-25
Last updated
2026-05-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Non-Alcoholic Steatohepatitis (NASH)

Brief summary

Purpose of this study is to assess the effects of pemvidutide on NASH resolution and NASH fibrosis.

Detailed description

A Phase 2, multi-center, double-blind, placebo-controlled study to evaluate the efficacy and safety of pemvidutide in NASH.

Interventions

Administered once weekly by subcutaneous injection

DRUGPlacebo

Administered once weekly by subcutaneous injection

Sponsors

Altimmune, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

Randomized, Double-blind, Placebo-controlled

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Written informed consent 2. Male or female 18-75 years 3. Histologic diagnosis of NASH and/or histologic confirmation of NASH based on central pathology evaluation of a liver biopsy during screening 1. A histologic NAFLD Activity Score (NAS) ≥ 4 with a score of at least 1 on each subcomponent score based on central pathology evaluation (steatosis \[0-3\], lobular inflammation \[0-3\], and hepatocyte ballooning \[0-2\]) 2. NASH fibrosis stages 2 through 3 according to the NASH CRN fibrosis staging system based on central pathology evaluation 4. Subject agrees to have a liver biopsy performed during the screening period (if no biopsy within the preceding 6 months is available) and at 24 weeks of treatment 5. BMI ≥ 27.0 kg/m2 6. Subjects with Type 2 diabetes mellitus (T2D) should be on a stable treatment regimen for their T2D for at least 90 days prior to screening 7. Subject meets at least 3 of the 5 criteria of Metabolic Syndrome (American Heart Association 2005) 8. Liver fat content by MRI-PDFF ≥ 8%

Exclusion criteria

1. Weight gain or loss \> 5% in the 3 months prior to randomization or \> 10% in the 6 months prior to screening 2. History or clinical evidence of Type 1 diabetes mellitus 3. Hemoglobin A1c (HbA1c) \> 9.5% or clinically significant persistent hyperglycemia 4. Liver conditions: 1. History of cirrhosis or complications of cirrhosis, including but not limited to variceal bleeding, encephalopathy, or ascites 2. Documented causes of chronic liver disease other than NASH 3. ALT or AST laboratory values \> 5 × ULN

Design outcomes

Primary

MeasureTime frame
Proportion of subjects achieving NASH resolution (NAFLD activity score [NAS], ballooning = 0; lobular inflammation = 0, 1) with at least a 2-point reduction in NAS without worsening of fibrosis24 weeks
Proportion of subjects achieving at least 1 stage improvement in liver fibrosis without worsening of NASH (defined as no change in the NAS, ie, the sum score for ballooning, inflammation, and steatosis)24 weeks
Incidence of Treatment Emergent Adverse Events52 weeks

Secondary

MeasureTime frame
Proportion of subjects achieving the composite of both NASH resolution and at least 1 stage improvement of liver fibrosis at 24 weeks24 weeks
Relative change (%) in liver fat content by MRI-PDFF24 weeks and 48 weeks
Absolute change in MRI-based corrected T1 (cT1) imaging24 weeks and 48 weeks
Absolute change in alanine aminotransferase (ALT)24 weeks and 48 weeks
Absolute change in Enhanced Liver Fibrosis (ELF) score24 weeks and 48 weeks
Absolute change in Fibroscan-AST (FAST) score24 weeks and 48 weeks
Relative (%) change in body weight24 weeks and 48 weeks
Absolute changes in fasting lipids (total cholesterol, HDL cholesterol, LDL cholesterol, triglycerides)24 weeks and 48 weeks
Change in HbA1c (%)24 weeks and 48 weeks
Change in glucose (mg/dL)24 weeks and 48 weeks
Change in systolic and diastolic blood pressure (mmHg)24 weeks and 48 weeks
Change in heart rate (beats per minute)24 weeks and 48 weeks
The number of subjects with treatment emergent adverse events48 weeks

Countries

Australia, Puerto Rico, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 19, 2026