Nuvalent NDA for ROS1 Inhibitor in Lung Cancer
FDA has accepted for review a Nuvalent NDA for zidesamtinib, a next-generation ROS1-selective tyrosine kinase inhibitor (TKI) being developed for adults with locally advanced or metastatic ROS1-positive non-small cell lung cancer (NSCLC) previously treated with at least one ROS1 TKI. The agency set a user fee review action target date of 9/18/2026.
The submission is based on data from the global Phase 1-2 ARROS-1 trial, which enrolled patients with ROS1-positive NSCLC who had progressed on an earlier ROS1 inhibitor. Nuvalent says the data showed an objective response rate of approximately 48-51% in the overall TKI pre-treated population.
Zidesamtinib is said to be engineered to address resistance mutations, including the commonly treatment-emergent G2032R mutation that limits the efficacy of currently available ROS1 inhibitors. The company also states that it designed the drug to achieve strong central nervous system penetration, thereby improving outcomes for patients with brain metastases, while avoiding inhibition of the related tropomyosin receptor kinase (TRK) family to minimize central nervous system-related side effects commonly associated with dual ROS1/TRK inhibitors.