Exploration of efficacy of different therapy regimens for advanced NSCLC patients with KRAS mutation in the first-line treatment

The treatment of the advanced non-small cell lung cancer (NSCLC) with KRAS mutation has been closely paid more attention. The aim of this study is to investigate the efficacy of different first-line regimens in advanced KRAS-mutated non-small cell lung cancer. In our retrospective study, we collected patients with advanced NSCLC with KRAS mutation in Zhejiang Cancer Hospital between January 2015 and May 2023. We analyzed the benefit of different first-line therapy according to theraputic methods and the differential effect of the same treatment method among KRAS-mutated subtypes. We divided the patients into group A (A1, chemotherapy alone; A2, immunotherapy alone) and group B (B1, chemotherapy plus immunotherapy; B2, chemotherapy combined with antiangiogenic therapy; B3, chemotherapy combined with immunotherapy plus antiangiogenic therapy). The Kaplan–Meier survival curve was used to reflect the PFS and OS of different methods. The objective response rate (ORR) and the disease control rate (DCR) were used to evaluated the response. We enrolled 227 patients including eighty-two with KRAS G12C mutation. The ORR and DCR of first-line treatment in the overall population were 32.2