Black Diamond Therapeutics shares surged nearly 24% in premarket trading.Black Diamond Therapeutics, Inc., a precision oncology medicine company pioneering the discovery and development of MasterKey therapies, today announced that the U.S. Food and Drug Administration (FDA) has cleared an investigational new drug (IND) application for its MasterKey inhibitor BDTX-1535, an irreversible, mutant selective, brain-penetrant inhibitor of oncogenic mutations of epidermal growth factor receptor (EGFR) expressed in glioblastoma multiforme (GBM) and intrinsic and acquired resistance EGFR mutations in non-small cell lung cancer (NSCLC). The Company expects to initiate the Phase 1 study of BDTX-1535 in the first quarter of 2022 and expects to provide a clinical update in the second half of 2023.