Black Diamond Therapeutics doses first patient in Phase 1 trial of BDTX-1535

Black Diamond Therapeutics announced the first patients dosed in mutation matched expansion cohorts of non-small cell lung cancer, NSCLC. in the ongoing Phase 1 clinical study evaluating BDTX-1535. The dosing of the first patients in the expansion cohorts follows the Company’s initial data readout from the dose escalation portion of the BDTX-1535 Phase 1 clinical study, which demonstrated clinical proof of activity through radiographic responses in NSCLC patients harboring diverse types of EGFR mutations including intrinsic driver and post-osimertinib acquired resistance EGFR mutations. “The Phase 1 expansion cohorts will assess objective response rate and durability of response in NSCLC patients whose disease has progressed after prior EGFR inhibitor therapy, including prior osimertinib, and who have evidence of a variety of EGFR driver or resistance mutations that are targeted by BDTX-1535,” said Sergey Yurasov, M.D., Ph.D., Chief Medical Officer of Black Diamond Therapeutics. “In conjunction with establishing an optimal dose for a future pivotal study, these efficacy data will be essential for establishing a regulatory pathway for BDTX-1535. Despite significant recent advances in treating lung cancer, there is a large unmet medical need for a targeted therapy for these EGFR mutation-positive NSCLC patients, for whom chemotherapy is still the most common treatment option.”