Phase 2 Study of Etavopivat for Children Aged 12 to 16 with Sickle Cell Disease at Risk of Stroke Evaluating Effects on Blood Flow in the Brain Using Ultrasound

What this Trial Is About

Researchers are studying etavopivat, a new medicine, in children aged 12 to 16 years with sickle cell disease who have an increased risk of stroke. The trial focuses on patients with conditional or abnormal transcranial doppler TCD ultrasound results, assessing whether etavopivat is safe and helpful for these participants. The study is a Phase 2 open-label trial sponsored by Forma Therapeutics, Inc., aiming to understand the effect of etavopivat on blood flow velocities in brain arteries. Participants will be divided into two groups based on their TCD results and whether they are already taking the medication hydroxyurea. One group includes participants with abnormal or conditional TCD who are not on hydroxyurea, while the other group includes those with similar TCD results who are on a stable dose of hydroxyurea. All participants will take 400 mg of etavopivat orally once daily for 52 weeks, with the option to continue in a 48-week extension period to further monitor safety. Etavopivat is taken as two 200 mg tablets and may be taken with or without food. During the study, participants will visit the clinic frequently for monitoring. Assessments include measuring blood flow velocities in brain arteries using TCD at various time points, tracking changes in velocity categories, and monitoring safety. The study also includes evaluating blood counts and liver and kidney function. At the end of the treatment and extension periods, participants may be offered the chance to join another study to continue receiving etavopivat. Total participation can last up to about two years depending on extension and further studies.

A Phase 2 Open-label Study to Evaluate the Activity of Etavopivat on Transcranial Doppler Velocities in Pediatric Patients With Sickle Cell Disease Who Are at Increased Risk for Primary Stroke