Phase 2 Study of Luspatercept for Treating Anemia in Adults and Adolescents with Alpha-Thalassemia Hemoglobin H Disease Evaluating Effectiveness and Safety Compared to Placebo

What this Trial Is About

Researchers are evaluating the efficacy and safety of luspatercept combined with best supportive care compared to placebo with best supportive care in adults with alpha-thalassemia hemoglobin H disease who experience anemia. The study also assesses the safety and drug levels of luspatercept in adolescents with this condition. This phase 2 trial aims to understand how luspatercept affects anemia and transfusion needs in this population. Participants are randomly assigned to one of four groups based on their transfusion dependence status adults who receive luspatercept plus best supportive care, adults who receive placebo plus best supportive care, adolescents who are transfusion dependent receiving luspatercept plus best supportive care, or adolescents who are non-transfusion dependent receiving luspatercept plus best supportive care. The treatments are given on specified days, and participants are monitored for up to 108 weeks, including assessments of drug levels, transfusion burden, hemoglobin changes, and adverse events. Throughout the study, participants undergo regular evaluations including blood tests to measure hemoglobin and transfusion needs, monitoring for side effects, and quality of life assessments. Researchers also track long-term safety outcomes and pharmacokinetics of the drug. The main outcomes include reductions in red blood cell transfusions over 12 to 48 weeks and increases in hemoglobin levels without transfusions. Participants may be followed for up to five years to monitor safety and treatment effects.

A Study to Determine the Efficacy and Safety of Luspatercept in Adult Participants and to Evaluate the Safety and Pharmacokinetics in and Adolescent Participants With Alpha (α)-Thalassemia