Phase 3 Sickle Cell Disease Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- You have sickle cell disease (SCD)
- Your hemoglobin (a measure of red blood cells) levels are considered stable by your doctor
- If you are taking hydroxyurea and/or L-glutamine, your dose has been unchanged for at least 90 days before joining and is not expected to change during the study
- You are between 12 and 65 years old (for the main study portion called Part B)
- You have had 2 or more, but no more than 10, pain crises (called vaso-occlusive crises, or VOCs) in the past 12 months (for Part B)
- You have already completed Part B of the study (to be eligible for the follow-on open-label extension portion)
Who may not be able to join:
- You have had more than 10 pain crises (VOCs) in the past 12 months
- You are currently pregnant or breastfeeding
- You receive regular red blood cell transfusions, or you have had a red blood cell transfusion for any reason in the past 90 days
- You were hospitalized for a sickle cell crisis or related painful event within the past 14 days before signing up, or at any point during the screening period
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Principal Investigator: Pfizer CT.gov Call Center, Pfizer
Phone: 1-800-718-1021
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Part A; Part B; OLE
Can't join this trial?
Data last synced from ClinicalTrials.gov: 27 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.