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Black Diamond Therapeutics Announces First Patient Dosed in Phase 1 Study of BDTX-1535, a MasterKey Inhibitor of EGFR for the Treatment of Glioblastoma and Non-Small Cell Lung Cancer
- Clinical update expected in second half of 2023 - CAMBRIDGE, Mass. and NEW YORK, April 18, 2022 (GLOBE NEWSWIRE) -- Black Diamond Therapeutics, Inc.

About this update from Black Diamond Therapeutics, Inc.
[{"type":"text","content":" - Clinical update expected in second half of 2023 - CAMBRIDGE, Mass. and NEW YORK, April 18, 2022 (GLOBE NEWSWIRE) -- Black Diamond Therapeutics, Inc. (Nasdaq: BDTX), a precision oncology medicine company pioneering the discovery and development of MasterKey therapies, today announced the dosing of the first patient in the Phase 1 study evaluating BDTX-1535, a MasterKey inhibitor of epidermal growth factor receptor (EGFR) for the treatment of both non-small cell lung cancer (NSCLC) and glioblastoma (GBM)derived from Black Diamond’s MAP discovery engine. “The dosing of the first patient in our Phase 1 study of BDTX-1535, a next generation brain-penetrant inhibitor of oncogenic EGFR MasterKey mutations is an important step as we believe this program is uniquely positioned to address the existing unmet needs of EGFR mutant NSCLC and GBM,” said David M. Epstein, Ph.D., Chief Executive Officer of Black Diamond Therapeutics. “This is the second MasterKey inhibitor derived from our MAP drug discovery engine; we are incredibly excited about BDTX-1535’s advancement into the clinic and we look forward to providing a clinical update in the second half of 2023.” “Despite recent successes in targeting EGFR-mutated NSCLC, there is still a need for better therapeutics for patients with disease progression following first-line EGFR inhibitors,” said Melissa Johnson, MD, Director of Lung Cancer Research for Sarah Cannon Research Institute at Tennessee Oncology. “We hope to assess the ability of BDTX-1535 to inhibit tumors with primary TKI-resistant EGFR mutations or those with on-target acquired resistance mutations.” NSCLC accounts for approximately 85% of lung cancer cases worldwide. About 10-20% of all lung cancer patients in North American and Europe, and up to 50% of those in Asia harbor mutations in EGFR. Intrinsic resistance EGFR mutations, of which G719X, S768I, L861Q are among the most frequent, account for 10-20% of EGFR mutations in NSCLC. The classical Exon19del and L858R mutations, which account for 80-90% of EGFR mutations in NSCLC, are well treated but resistance invariably emerges to current generation EGFR inhibitors. \"GBM is an aggressive form of brain cancer with limited treatment options,” said Patrick Y. Wen, MD, Director, Center for Neuro-Oncology at Dana-Farber Cancer Institute. \"A majority of GBM tumors will co-express...