Immune-Onc Therapeutics, Inc. (“Immune-Onc”), a clinical-stage cancer immunotherapy company developing novel biotherapeutics targeting immunosuppressive myeloid checkpoints, today announced that the U.S. Food and Drug Administration (FDA) has granted Fast Track designation for IO-202, a first-in-class myeloid checkpoint inhibitor targeting leukocyte immunoglobulin-like receptor B4 (LILRB4, also known as ILT3) for the treatment of patients with relapsed or refractory acute myeloid leukemia (AML).