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Abivax inflammatory bowel drug shows benefit in relapsed and non-responding patients
The update showed 37.2% of previously nonresponsive patients reached remission after 44 weeks, while expanded safety data found cancer rates in line with expectations.
Abivax shares jumped 25% on Tuesday after the Paris-based biotech released fresh Phase 3 ABTECT maintenance trial results showing malignancies within expected background rates for its lead drug, obefazimod.
Investor sentiment had soured after earlier maintenance trial data revealed cancer cases among patients taking the highest dose, causing shares to crash around 44% on June 2.
The latest results showed 37.2% of patients who initially failed to respond achieved clinical remission after 44 weeks, while 34.5% showed bowel-lining healing and 45.5% regained remission at the 50 mg dose.
Jefferies analysts called the update "supportive," but questioned whether findings satisfy investors, citing "cancer risk may be tough to discount, sparse catalyst path, cash needs, catalyst path ex-M&A."
Chief Executive Marc de Garidel affirmed Abivax remains on track to submit a New Drug Application later this year, while the company evaluates the drug for Crohn disease with mid-2027 trial results expected.