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Blueprint Medicines Corporation, a precision therapy company, develops medicines for genomically defined cancers and blood disorders in the United States and internationally. The company is developing AYVAKIT for the treatment of systemic mastocytosis (SM) and gastrointestinal stromal tumors; BLU-263, an orally available, potent, and KIT inhibitor for the treatment of indolent SM, and other mast cell disorders. It is also developing GAVRETO for the treatment of RET fusion-positive non-small cell lung cancer, altered thyroid carcinoma, and medullary thyroid carcinoma; BLU-945 for the treatment of epidermal growth factor receptor driven non-small-cell lung carcinoma (NSCLC); and BLU-451 to treat NSCLC in patients with epidermal growth factor receptor gene (EGFR) exon 20 insertion mutations.