P539: A PHASE 1 STUDY OF HMPL-306, A DUAL INHIBITOR OF MUTANT ISOCITRATE DEHYDROGENASE (IDH) 1 AND 2, IN PTS WITH RELAPSED/REFRACTORY MYELOID HEMATOLOGICAL MALIGNANCIES HARBORING IDH1 AND/OR 2 MUTATIONS - Lijuan Hu; Wei-LI Zhao; Wen Wu; Xudong Wei; Ruihua MI; Yu Hu; Qiubai LI; Wenjuan He; Juan LI; Yugang Dong; Hehua Wang; Xuhan Zhang; et al. (HemaSphere, 2023)