Autolus(US:AUTL) GlobeNewswire News Room·2025-06-12 06:00Core Insights - Autolus Therapeutics plc announced updated long-term data from the FELIX study of its programmed T cell therapy, obecabtagene autoleucel (obe-cel), for adult patients with relapsed/refractory B-cell acute lymphoblastic leukemia (B-ALL) [1][2] - The data will be presented at the European Hematology Association Congress in Milan, Italy, from June 12-15, 2025 [1] Efficacy and Safety - At a median follow-up of 32.8 months, 38.4% of responders remained in ongoing remission without subsequent therapy, showing a slight decrease from 40% at 21.5 months [3] - The 24-month probability of Event Free Survival was reported at 43%, while Overall Survival was at 46%, indicating a long-term plateau in outcomes [3] - No new safety signals or Grade ≥3 secondary malignancies were observed during the extended follow-up, suggesting a favorable safety profile for obe-cel [3][6] Patient Demographics and Treatment Outcomes - Obe-cel treatment demonstrated deep and durable remissions across different age groups, with low incidence of Grade ≥3 cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS) [5] - The multivariate analysis indicated that factors such as Philadelphia chromosome-positive disease and lower disease burden at lymphodepletion were associated with higher remission rates [4] Clinical Trial Background - The FELIX clinical trial is a Phase 1b/2 study that enrolled over 100 adult patients with r/r B-precursor ALL across 30 leading centers in the US, UK, and Europe [9] - The primary endpoint was overall response rate, with secondary endpoints including duration of response and safety [9] Company Overview - Autolus Therapeutics is focused on developing next-generation T cell therapies for cancer and autoimmune diseases, with obe-cel being FDA approved and MHRA licensed [8]