Why Is Actinium Pharmaceuticals Stock Falling In Pre-market?

(RTTNews) - Actinium Pharmaceuticals (ATNM) issued a regulatory update on the planned Biologics License Application filing for Iomab-B in patients with active relapsed or refractory acute myeloid leukemia. The company has concluded both clinical and Chemistry, Manufacturing and Controls interactions with the FDA regarding the BLA pathway for Iomab-B. The FDA has now determined that the analyses from the SIERRA trial do not adequately support a BLA filing for Iomab-B. The FDA has now determined that demonstrating an overall survival benefit in a randomized head-to-head trial is required for a BLA filing.

The FDA has advised Actinium to conduct a study to evaluate allogeneic bone marrow transplant using Iomab-B plus a reduced intensity conditioning regimen of fludarabine and total body irradiation versus allogeneic BMT using reduced intensity conditioning comprised of cyclophosphamide plus Flu/TBI, a difference from the SIERRA trial. Also, the proposed additional trial will not allow crossover, which was allowed in SIERRA.

Shares of Actinium Pharmaceuticals are down 64% in pre-market trade on Monday.

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