SELLAS Life Sciences Partners With IMPACT-AML To Launch European Clinical Study Of SLS009

• Supports capital-efficient expansion of the SLS009 clinical program into frontline AML, enabling broader U.S. and European patient enrollment 
• U.S. enrollment evaluating SLS009 in combination with AZA/VEN in newly diagnosed AML with high-risk features is planned for Q1 2026, with European enrollment anticipated in Q2 2026 
   

NEW YORK, Jan. 14, 2026 (GLOBE NEWSWIRE) -- SELLAS Life Sciences Group, Inc. (NASDAQ:SLS) ("SELLAS'' or the "Company"), a late-stage clinical biopharmaceutical company focused on the development of novel therapies for a broad range of cancer indications, today announced that it has entered into an agreement with IMPACT-AML, a European collaborative initiative dedicated to advancing innovative treatments for patients with acute myeloid leukemia (AML). Under the agreement, the IMPACT-AML network will conduct a clinical study evaluating SLS009, a highly selective CDK9 inhibitor, enabling access to multiple European clinical sites and patients.

IMPACT-AML is a pan-European project and builds an inclusive clinical network (STREAM platform) that connects patients, clinicians, and researchers to test novel AML therapies and improve patient outcomes (https://impactaml.eu/). It is part of the prestigious EU Mission Cancer program and a top-tier scientific cluster. The IMPACT-AML project is led by a consortium of major research and clinical institutions in Europe, including IRST (IRCCS Istituto Romagnolo per lo Studio dei Tumori "Dino Amadori"), the University of Bologna, IIS LA FE (Health Research Institute Hospital La Fe), several European AML collaborative groups, and supranational organizations under the umbrella of the European Leukemia Net (ELN), as well as various university hospitals across Europe. By leveraging IMPACT-AML's existing infrastructure and expertise, SELLAS expects to expand European patient access to SLS009 in a highly cost-efficient manner while supporting broader participation across the clinical program.