Overview ACE-536 Extension Study - Beta Thalassemia Status: Completed Trial end date: 2020-06-18 Target enrollment: Participant gender: Summary Study A536-06 is an open-label extension study for patients previously enrolled in study A536-04 (ClinicalTrials.gov Identifier NCT01749540), to evaluate the long-term safety and tolerability of ACE-536 in adult patients with beta-thalassemia. Phase: Phase 2 Details Lead Sponsor: Acceleron Pharma Inc.Acceleron Pharma, Inc.Treatments: Luspatercept