GSK's Risvutatug Rezetecan Receives Orphan Drug Designation in Japan for Small-Cell Lung Cancer
Mar 23, 2026
GSK's antibody-drug conjugate risvutatug rezetecan has received Orphan Drug Designation in Japan for small-cell lung cancer, marking its sixth global regulatory designation. The decision was based on phase I trial data showing durable responses in extensive-stage SCLC patients. The drug is currently in phase III development for relapsed ES-SCLC.