Consolidative Stereotactic Radiotherapy for Oligo-Residual Advanced EGFR-Mutant NSCLC After First-Line Third-Generation EGFR-TKI Plus Chemotherapy

This national multicenter, randomized controlled clinical trial evaluates the safety and efficacy of consolidative stereotactic radiotherapy in patients with advanced EGFR-mutant non-small cell lung cancer who have oligo-residual disease after four cycles of first-line treatment with third-generation EGFR-TKI plus platinum-based pemetrexed chemotherapy. Eligible participants will be randomized 1:1 to continue third-generation EGFR-TKI plus pemetrexed maintenance therapy alone or to receive stereotactic radiotherapy to all oligo-residual lesions in addition to the same maintenance therapy. The primary endpoint is progression-free survival.