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15 Sep 2020

Insight on USFDA approval of pralsetinib to treat non-small lung cancer

Blueprint Medicines Corporation, a precision therapy company focused on genomically defined cancers, rare diseases and cancer immunotherapy, today announced that the U.S. Food and Drug Administration (FDA) has approved GAVRETO™ (pralsetinib) for the treatment of adult patients with metastatic rearranged during transfection (RET) fusion-positive non-small cell lung cancer (NSCLC) as detected by an FDA approved test. The approval is based on data from the Phase 1/2 ARROW clinical trial, which showed efficacy for GAVRETO in patients with RET fusion-positive NSCLC with or without prior therapy, and regardless of RET fusion partner or central nervous system involvement. Under Blueprint Medicines’ collaboration with Roche, Blueprint Medicines and Genentech, a member of the Roche Group, will co-commercialize GAVRETO in the U.S.

GAVRETO is a once-daily oral RET-targeted therapy developed by Blueprint Medicines. It is designed to selectively and potently inhibit RET alterations that drive many cancer types, including approximately 1 to 2 percent of patients with NSCLC. Currently, RET is one of seven NSCLC biomarkers that can be targeted with an FDA-approved therapy.

GAVRETO is the second breakthrough therapy discovered by Blueprint Medicines that has received FDA approval in 2020.

Basis of approval

GAVRETO was granted accelerated approval by the FDA, and continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial. In 87 patients previously treated with platinum-based chemotherapy, the overall response rate (ORR) was 57 percent (95% CI: 46%, 68%) with a 5.7 percent complete response (CR) rate, and the median duration of response (DOR) was not estimable (95% CI: 15.2 months, not estimable). In 27 treatment-naïve patients who were ineligible for platinum-based chemotherapy per the study protocol, the ORR was 70 percent (95% CI: 50%, 86%) with an 11 percent CR rate, and the median DOR was 9.0 months (95% CI: 6.3 months, not estimable). GAVRETO has warnings and precautions of interstitial lung disease/pneumonitis, hypertension, hepatotoxicity, hemorrhagic events, risk of impaired wound healing and risk of embryo-fetal toxicity.


  • Genentech to rapidly bring GAVRETO to healthcare providers and patients in the U.S.
  • Blueprint Medicines and Genentech plan to make GAVRETO available in the U.S. within one week. GAVRETO will be available in a 100 mg dose strength, and the recommended starting dose is 400 mg once daily.
  • Blueprint Medicines is dedicated to helping patients access treatment with GAVRETO and delivering support throughout their treatment journey. As part of this commitment, Blueprint Medicines is providing YourBlueprint™, a patient support program that offers access and affordability solutions for individuals receiving GAVRETO. For more information, visit or call 1-888-BLUPRNT (1-888-258-7768). Healthcare providers who prescribe GAVRETO can fill out an enrollment form at to help patients access the support services.

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