Vicente Lopez

Researchers are evaluating Risvutatug Rezetecan Ris-Rez, a new medicine targeting specific proteins on cancer cells, in adults with relapsed extensive-stage small cell lung cancer ES-SCLC. This phase 3 study aims to compare how well Ris-Rez works versus the standard treatment, topotecan, by measuring cancer shrinkage, disappearance, and overall survival. The study also monitors safety, side effects, and tolerability of both treatments. Participants will be randomly assigned to receive either Ris-Rez or topotecan. Both treatments will be administered as part of the study to assess their effects. The study will follow participants for up to approximately 139 weeks to evaluate multiple outcomes including survival, tumor response, disease progression, and brain metastasis control. During the study, participants will have regular evaluations including scans, laboratory tests, vital signs, electrocardiograms, and performance status assessments. Researchers will track adverse events, laboratory changes, and participant experiences with the study drugs. The main outcome measured is overall survival up to about 113 weeks, with additional long-term monitoring of other health and disease measures throughout the study.