Alnylam Holding Co. made headlines Aug. 10 when the US FDA approved Onpattro (patisiran) as a “first-of-its-kind targeted RNA-based therapy,” but the company landed a narrower indication than it was initially hoping for.
The agency specifically cleared the small interfering RNA (siRNA) therapy for the treatment of adults with polyneuropathy caused by hereditary transthyretin-mediated amyloidosis (hATTR), a rare and often fatal genetic disease that consists of the