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Altimmune (Nasdaq: ALT) filed an 8-K reporting positive topline data from the IMPACT Phase 2b trial of pemvidutide in metabolic dysfunction-associated steatohepatitis (MASH).
- MASH resolution without fibrosis worsening reached 59.1% (1.2 mg) and 52.1% (1.8 mg) vs 19.1% placebo (p<0.0001).
- Histologic fibrosis improvement (31.8%/34.5% vs 25.9% placebo) was not significant, but AI analysis showed ≥60% fibrosis reduction in 30.6% at 1.8 mg vs 8.2% placebo (p<0.001).
- Mean weight loss 5.0%/6.2% vs 1.0% placebo (p<0.001); liver fat fell 58.0%/62.8% vs 16.2%.
- Safety: 0–1.2% AE-related discontinuations; no drug-related SAEs.
Slides (Ex 99.2) accompany a call on 26 Jun 2025. Forward-looking statements cite regulatory, trial and funding risks.