08 Dec, 2014 Positive Initial Phase 1 Clinical Results for ALN-AT3, in Development for the Treatment of Hemophilia and Rare Bleeding Disorders
We presented positive initial Phase 1 data for ALN-AT3, an investigational RNAi therapeutic targeting antithrombin (AT) for the treatment of hemophilia and rare bleeding disorders. Preliminary results, presented at the 56th Annual Meeting of the American Society of Hematology (ASH), showed that subcutaneous administration of ALN-AT3 given once weekly for three weeks at low doses of 15 (N=3) or 45 (N=1) micrograms/kg (mcg/kg) resulted in an up to 57% knockdown of AT in hemophilia subjects. The effects of ALN-AT3 lasted for about 60 days after a single dose. ALN-AT3 was found to be well tolerated in both healthy volunteers and hemophilia subjects enrolled in the study. These initial results show preliminary evidence for potency and durability of RNAi therapeutics at mcg/kg subcutaneous doses in human studies, and are the first clinical data to be reported for Alnylam’s Enhanced Stabilization Chemistry (ESC)-GalNAc conjugate technology.