Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: Open-label Patient Continuation of DX-88 (Ecallantide) for Acute Hereditary Angioedema Attacks
Brief Summary: The purpose of this study is to evaluate the efficacy and safety of repeated doses of ecallantide in the treatment of acute attacks of hereditary angioedema and to allow HAE patients continued access to ecallantide. In addition, patients enrolled in DX-88/20 (EDEMA4) trial will be followed up and treated for subsequent attacks in this trial.