Long-term Safety and Effectiveness of Etavopivat in Children, Adolescents, and Adults with Sickle Cell Disease or Thalassaemia Who Completed Previous Etavopivat Treatment

What this Trial Is About

Researchers are evaluating the long-term safety and effects of etavopivat, a new oral medicine being developed for inherited blood disorders such as sickle cell disease and thalassaemia. These conditions affect haemoglobin, the protein responsible for carrying oxygen in the blood. This phase 3 study involves participants who have already completed treatment in a prior etavopivat study and aims to understand how etavopivat performs over an extended period of up to 264 weeks, though the study may end earlier if the drug gains approval locally. Participants will receive oral doses of etavopivat, with different forms A, B, or C given based on their age and condition. Those aged 12 years and older will receive etavopivat A or C, while children under 12 years will receive etavopivat B. The study includes several groups covering various sickle cell disease and thalassaemia categories, including transfusion-dependent and non-transfusion-dependent cases. Treatment is continuous during the study period. Throughout the study, participants will undergo regular monitoring for side effects and treatment responses, including tracking treatment emergent adverse events, hospitalizations, vaso-occlusive crises, hemoglobin concentration changes, and blood transfusion needs. These assessments will help evaluate the drugs safety and efficacy across age groups and disease types. The study is open-label and non-randomized, with follow-up lasting up to about six years.

A Research Study Looking at Long-term Treatment With Etavopivat in People With Sickle Cell Disease or Thalassaemia