Results from the Phase 3 SIERRA Trial of Iomab-B

Iomab-B is the first CD45 targeted radiotherapy for conditioning in development to enable potentially curative bone marrow transplant and represents an alternative to chemotherapy-based approaches
SIERRA achieved durable Complete Remission primary endpoint and Event-Free Survival secondary endpoint with high statistical significance
Iomab-B was well tolerated in the older, heavily pretreated relapsed/refractory AML patients with active disease enrolled in the SIERRA trial
Actinium to seek strategic partner for Iomab-B for further development in the U.S. following completion of interactions with FDA for additional head-to-head clinical trial to demonstrate overall survival benefit