Study Status: Enrolling by invitation
Recruit Status: Enrolling by invitation
Study Type: Interventional
Official Title: A Multicenter, Open-label Extension Study to Evaluate the Long-term Safety and Clinical Activity of Subcutaneously Administered ALN-AS1 in Patients With Acute Intermittent Porphy
Brief Summary: The purpose of this study is to determine the long-term safety, tolerability and pharmacokinetics of ALN-AS1 in AIP patients