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LONDON — Abivax on Monday night disclosed additional data for its experimental ulcerative colitis drug, seemingly allaying at least some of the safety concerns that had flared in recent weeks.
U.S.-listed shares of the French firm were up some 25% overnight into Tuesday morning.
Earlier this month, Abivax reported that the drug, called obefazimod, delivered strong efficacy in a closely watched maintenance trial, with far more participants on the study drug entering a period of no symptoms of their bowel disease versus those on placebo. But a number of cancer cases among people on obefazimod raised questions about potential safety risks, with company shares plummeting in response.
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