Phase III Trial to Evaluate Adjuvant Cemiplimab Immunotherapy After Surgery in Adults With Stage II-IIIA Non-Small Cell Lung Cancer Who Have Not Had Chemotherapy

What this Trial Is About

This trial evaluates the effectiveness of adjuvant cemiplimab immunotherapy in adults with surgically removed stage II-IIIA non-small cell lung cancer NSCLC who have not previously received adjuvant platinum-based chemotherapy. The study aims to compare disease-free survival between patients treated with cemiplimab and those under observation without additional treatment, focusing on patients with tumors showing PD-L1 expression of 1% or higher. Participants are randomly assigned to receive either cemiplimab or observation. Those in the cemiplimab group receive 350 mg intravenously every 3 weeks for 4 cycles, followed by 700 mg every 6 weeks for up to 6 cycles or until disease relapse or unacceptable side effects occur. The observation group does not receive adjuvant treatment. Treatment continues until relapse, toxicity, or completion of planned cycles. During the trial, participants undergo regular assessments including imaging and laboratory tests to monitor disease status and side effects. The main outcome measured is disease-free survival, tracked for approximately 59 months from randomization. Secondary outcomes include overall survival and the nature and severity of adverse events. Participants are monitored for safety and treatment response throughout the study period, which is expected to conclude in March 2029.

A Clinical Study to Assess the Efficacy of Adjuvant Immunotherapy With Cemiplimab in Patients With Surgically Removed Non-small Cell Lung Cancer Who Have Not Received Prior Chemotherapy