[#item_full_content]SOUTH SAN FRANCISCO, Calif.–(BUSINESS WIRE)–Opna Bio announced that it has dosed the first patient with OPN-6602, a potent and selective EP300/CBP bromodomain inhibitor, in a Phase 1 clinical study in multiple myeloma. The trial is expected to enroll up to 130 total patients with relapsed or refractory multiple myeloma at sites in the U.S. Multiple myeloma is a type of blood cancer derived from malignant plasma cells in the bone marrow. There are approximately 180,000 people worldwide who are