11/28/2025
S2409 PRISM is a study for people with extensive stage small cell lung cancer (ES-SCLC) who haven’t finished initial treatment. People can also join the study before starting initial treatment.
ES-SCLC can be hard to treat — but this study asks if it’s possible to personalize treatments so people get medicines that work best for them. Patients will get testing to find out which subtype (kind) of extensive stage they have. The study compares the standard treatment, durvalumab, to durvalumab plus a medicine that’s matched to patients’ subtype.
Learn more at SWOG.org/S2409 or call 1-800-4-CANCER and ask about study S2409.