The Risk Factors for Acute Radiation Pneumonitis in Patients With Prior Receipt of Immune Checkpoint Inhibitors

This study is looking at why some cancer patients develop lung inflammation (called radiation pneumonitis) after receiving chest radiation therapy, specifically in people who previously received immunotherapy drugs called immune checkpoint inhibitors. **You may be eligible if...** - You have a confirmed cancer diagnosis - You previously received immunotherapy (immune checkpoint inhibitors) before chest radiation therapy - You then underwent chest radiation therapy (intensity-modulated radiotherapy) **You may NOT be eligible if...** - You did not receive immunotherapy before your chest radiation treatment - Your radiation treatment was not directed at the chest area Talk to your doctor to see if this trial is right for you.