Partner Therapeutics Drug Approved for Radiation Sickness

FDA has approved a Partner Therapeutics NDA for leukine for treating adult and pediatric patients acutely exposed to myelosuppressive doses of radiation (Hematopoietic Syndrome of Acute Radiation Syndrome). The company notes that efficacy studies of Leukine could not be conducted in humans with acute radiation syndrome for ethical and feasibility reasons and approval of this use was based on government-sponsored efficacy studies conducted in animals. “Leukine (7 mcg/kg/day) or placebo was initiated 48 hours after exposure to myelosuppressive doses of radiation expected to be fatal to 50-60% of in non-human primates at day 60, without requiring supportive whole blood transfusions or individualized antibiotics (36 animals per group),” the company says. Leukine improved survival by 85% (78% vs 42%) at day 60, it says.

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