Rigel Pharmaceuticals, Inc. (Nasdaq: RIGL) today announced that the U.S. Food and Drug Administration (FDA) has approved REZLIDHIA™ (olutasidenib) capsules for the treatment of adult patients with relapsed or refractory (R/R) acute myeloid leukemia (AML) with a susceptible isocitrate dehydrogenase-1 (IDH1) mutation as detected by an FDA-approved test....The FDA approval was supported by data from the open-label Phase 2 registrational study evaluating REZLIDHIA monotherapy at a dose of 150 mg twice daily in 153 mIDH1 R/R AML patients.