This is a Multicenter, Open-label, Phase I/II Study to Explore the Safety, Tolerability, Pharmacokinetics (PK), and Preliminary Efficacy of GFH276 in Patients With Advanced NSCLC Harboring a RAS Mutation.

This open-label, multicenter Phase Ib/II study enrolls participants with locally advanced or metastatic non-squamous NSCLC with RAS mutation or KRAS amplification, who have not received prior systemic anti-cancer therapy for advanced disease. In Phase Ib, dose escalation of GFH276 will be performed in assigned arm to identify the recommended Phase 2 dose (RP2D) based on dose-limiting toxicity (DLT) and the overall safety profile. After RP2D determination, participants will be enrolled in Phase II to further evaluate the anti-tumor efficacy and long-term safety of each combination regimen. Study-related assessments will include tumor imaging, laboratory tests, adverse event monitoring, and pharmacokinetic sampling throughout the treatment period. Participants will continue their assigned study treatment until confirmed disease progression, intolerable toxicity, withdrawal of consent, or study closure.