 NEW YORK, Oct. 07, 2021 GLOBE NEWSWIRE -- SELLAS Life Sciences Group, Inc. NASDAQ: SLS SELLAS or the Company, a late-stage clinical biopharmaceutical company focused on developing novel cancer immunotherapies for a broad range of indications, today announced that Angelos Stergiou, MD, ScD. h.c., President and Chief Executive Officer of SELLAS, will participate in two upcoming conferences: 