Altimmune stock rises on positive Phase 2b MASH trial results

Published 27/06/2025, 12:42
Altimmune stock rises on positive Phase 2b MASH trial results

Investing.com - Altimmune (NASDAQ:ALT) shares gained Thursday after the company announced positive topline data from its 24-week Phase 2b IMPACT trial evaluating pemvidutide in metabolic dysfunction-associated steatohepatitis (MASH). The stock, currently trading at $3.61, has experienced significant volatility recently, with InvestingPro data showing a 48.65% decline over the past week.

The trial met its primary endpoint with statistically significant MASH resolution without worsening of fibrosis in 59.1% of patients receiving pemvidutide 1.2 mg and 52.1% at the 1.8 mg dose, versus 19.1% with placebo. H.C. Wainwright maintained its Buy rating and $12.00 price target on the stock following the announcement. According to InvestingPro, the broader analyst community remains bullish, with price targets ranging from $6 to $28 for this $293 million market cap company.

While fibrosis improvement without worsening of MASH was observed in 31.8% and 34.5% of patients in the 1.2 mg and 1.8 mg arms respectively, compared to 25.9% for placebo, these differences did not reach statistical significance. AI-based fibrosis reads and non-invasive tests showed significant improvements, providing evidence of anti-fibrotic activity.

Pemvidutide produced weight loss of up to 6.2% at 24 weeks, with a continued downward trajectory and no evidence of plateauing. The drug demonstrated favorable tolerability with less than 1% treatment discontinuation and no need for dose titration.

H.C. Wainwright noted these data support advancement to Phase 3 and strengthen the case for pemvidutide as a potential therapy for MASH, with expectations for a positive fibrosis outcome at 48 weeks. While the company maintains a strong financial position with more cash than debt and a healthy current ratio of 15.85, InvestingPro analysis suggests the stock is currently undervalued. Subscribers can access 12 additional ProTips and a comprehensive research report for deeper insights into Altimmune’s potential.

In other recent news, Altimmune, Inc. reported that its Phase 2b trial of pemvidutide for metabolic dysfunction-associated steatohepatitis (MASH) met its primary endpoint, with up to 59.1% of participants achieving MASH resolution without worsening fibrosis. The 24-week study involved 212 participants, and while improvements in fibrosis were noted, these were not statistically significant. A supplemental AI-based analysis did show significant reductions in fibrosis for some participants. Altimmune plans to discuss these results with the FDA as it prepares to advance to Phase 3 trials. Meanwhile, Citizens JMP analysts maintained their Market Outperform rating with a $25 price target for Altimmune, highlighting upcoming presentations on pemvidutide’s cardiovascular benefits. Stifel analysts also reiterated their Buy rating, setting an $18 price target, expressing optimism about pemvidutide’s potential in MASH treatment. Additionally, Altimmune has started a Phase 2 trial for pemvidutide in treating Alcohol Use Disorder (AUD), aiming to address significant treatment gaps in the U.S. This trial will evaluate the drug’s efficacy and safety over 24 weeks.

This article was generated with the support of AI and reviewed by an editor. For more information see our T&C.

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