Core Insights - Abivax announced positive topline results from its Phase 3 ABTECT-1 and ABTECT-2 trials for obefazimod, a first-in-class oral miR-124 enhancer, in patients with moderately to severely active ulcerative colitis [2][3][4] Study Details - The ABTECT-1 and ABTECT-2 trials were global, multicenter, randomized, double-blind, placebo-controlled studies assessing once-daily oral administration of obefazimod at 25 mg or 50 mg doses [4][5] - A total of 1,275 patients were enrolled from over 600 clinical trial sites across 36 countries, making it one of the largest Phase 3 ulcerative colitis trials conducted [4][5][6] Efficacy Results - The 50 mg once-daily dose of obefazimod achieved a pooled placebo-adjusted clinical remission rate of 16.4% (p<0.0001) at Week 8 [5][7] - Individually, the 50 mg dose showed a remission rate of 19.3% (p<0.0001) in ABTECT-1 and 13.4% (p=0.0001) in ABTECT-2 [5][7] - The 25 mg dose achieved a placebo-adjusted remission rate of 21.4% in ABTECT-1, while in ABTECT-2 it did not reach statistical significance but indicated a strong clinical response [8] Safety Profile - Obefazimod demonstrated a favorable safety profile with no new safety signals observed, and the treatment was generally well tolerated across both dose groups [9][10] - Treatment Emergent Adverse Events (TEAEs) were reported in 59.4% of patients receiving the 50 mg dose in ABTECT-1 and 61.0% in ABTECT-2 [10][11] Future Plans - The ongoing ABTECT Maintenance Trial is expected to report topline results in Q2 2026, which will support regulatory filings globally [12][16] - Pending successful results from the maintenance trial, Abivax plans to submit a New Drug Application to the FDA and a Marketing Authorization Application to the EMA in the second half of 2026 [3][16]