This study investigates how well an investigational medication works after surgery and chemotherapy in treating patients with stage IB-IIIA non-small cell lung cancer. Non-small cell lung cancer is a type of lung cancer that includes several subtypes, and it is categorized based on tumor size and spread. The study aims to evaluate if adding this medication can improve survival rates compared to standard observation after surgery and chemotherapy.
Participants in this study will undergo procedures that include regular imaging tests to monitor their condition. Imaging tests like chest CT scans help doctors see inside the body to check for signs of cancer. Participants will be randomly assigned to receive either the investigational medication or to be in the observation arm, where they will not receive the medication.
- Who can participate: Adults 18 years and older who have had surgery for stage IB (4 cm or larger), II, or IIIA non-small cell lung cancer with negative surgical margins can participate. They must have a good performance status and be registered in a specific screening trial.
- Study details: Participants will either receive the investigational medication or be observed without it. The investigational medication is given after surgery and chemotherapy to see if it improves survival.

