Ascentage Pharma (6855.HK), a globally focused, clinical-stage biotechnology company engaged in developing novel therapies for cancers, chronic hepatitis B (CHB), and age-related diseases, today announced that the US Food and Drug Administration (FDA) has granted APG-2575, a novel Bcl-2 inhibitor being developed by the company, an Orphan Drug Designation (ODD) for the treatment of chronic lymphocytic leukemia (CLL). This is the second ODD granted for APG-2575, following the previous ODD granted by the FDA in July for the treatment of Waldenström Macroglobulinemia (WM).