Nuvalent(US:NUVL) Prnewswire·2025-09-07 08:45Core Viewpoint - Nuvalent, Inc. has initiated a rolling New Drug Application (NDA) submission for zidesamtinib, a novel investigational ROS1-selective inhibitor, targeting TKI pre-treated patients with advanced ROS1-positive non-small cell lung cancer (NSCLC), with completion expected in the third quarter of 2025 [1][2]. Group 1: Zidesamtinib Development - Zidesamtinib is designed to overcome limitations of existing ROS1 inhibitors and is intended to remain effective in tumors with resistance mutations, including G2032R [4]. - The drug is also formulated for central nervous system (CNS) penetration, aiming to improve treatment options for patients with brain metastases [4]. - Zidesamtinib has received breakthrough therapy designation for patients with ROS1-positive metastatic NSCLC previously treated with two or more ROS1 TKIs [4]. Group 2: Clinical Trial Insights - The ARROS-1 Phase 1/2 clinical trial is currently investigating zidesamtinib in patients with advanced ROS1-positive NSCLC and other solid tumors, with the Phase 1 portion focusing on safety and tolerability [5]. - The ongoing Phase 2 portion is designed for TKI-naïve and TKI pre-treated patients, with registrational intent [5]. Group 3: Regulatory Engagement - The FDA has accepted the NDA for zidesamtinib under the Real-Time Oncology Review (RTOR) program, allowing for earlier submission of efficacy and safety results [2]. - The company is actively engaging with the FDA regarding potential opportunities for line-agnostic expansion [2]. Group 4: Market Need - There is a significant need for new treatment options for patients with ROS1-positive NSCLC, especially those who cannot tolerate existing TKIs or have disease progression with brain metastases or resistance mutations [3].