Cullinan Oncology, Inc. announced that the U.S. Food and Drug Administration (“FDA”) has granted Breakthrough Therapy Designation for CLN-081 for the treatment of patients with locally advanced or metastatic non-small cell lung cancer (“NSCLC”) harboring epidermal growth factor (“EGFR”) exon 20 insertion mutations who have previously received platinum-based systemic chemotherapy. Breakthrough Therapy Designation is a process designed to expedite the development and review of drugs that are intended to treat a serious condition and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over available therapy on a clinically significant endpoint(s).