SELLAS Life Sciences Announces Independent Data Monitoring Committee Periodic Review and Positive Recommendation to Continue Pivotal Phase 3 REGAL Trial of GPS in AML Without Modification

Core Viewpoint - SELLAS Life Sciences Group, Inc. has received a positive recommendation from the Independent Data Monitoring Committee (IDMC) to continue the Phase 3 REGAL trial of galinpepimut-S (GPS) in acute myeloid leukemia (AML) without modification, indicating a favorable risk-benefit profile and no safety concerns identified [1][2]. Group 1: Trial Details - The Phase 3 REGAL trial is a survival-driven study aimed at evaluating GPS in AML patients who have achieved complete remission following second-line salvage therapy, with the primary endpoint being overall survival [4]. - The trial completed enrollment in April 2024, with a total of 126 patients randomized, and approximately 75% of patients enrolled from study sites in the U.S. and Europe, with the U.S. being the highest enrolling country [2][4]. - The next and final analysis of the trial will occur once 80 events (deaths) have been recorded, which has not yet been reached at the time of the IDMC review [3]. Group 2: Company Overview - SELLAS is a late-stage clinical biopharmaceutical company focused on developing novel therapeutics for various cancer indications, with its lead product candidate GPS targeting the WT1 protein present in multiple tumor types [5]. - The company is also developing SLS009, a differentiated small molecule CDK9 inhibitor, which has shown a high response rate in AML patients with unfavorable prognostic factors, including ASXL1 mutation [5].