A Study to Evaluate How Well Etavopivat Works in People With Sickle Cell Disease
This study is conducted to confirm whether etavopivat works well at reducing the number of Vaso-occlusive crisis VOCs (sickle cell pain crises) caused by obstructions in blood vessels in adults and ad...
A Research Study Looking at Long-term Treatment With Etavopivat in People With Sickle Cell Disease or Thalassaemia
Etavopivat is a new medicine under development for treating blood disorders like sickle cell disease and thalassaemia. Sickle cell disease and thalassaemia are inherited blood disorders that affect ha...
A Study to Investigate the Efficacy and Safety of Crizanlizumab (5 mg/kg) Compared With Placebo in Adolescent and Adult Sickle Cell Disease Patients Who Experience Frequent Vaso-Occlusive Crises (SPARKLE)
A phase III, multi-center, randomized, placebo-controlled, double-blind study to assess efficacy and safety of crizanlizumab (5 mg/kg) versus placebo, with or without hydroxyurea/hydroxycarbamide ther...
A Socio-ecological Approach for Improving Self-management in Adolescents With SCD
The goal of this clinical trial is to evaluate the impact of SCThrive (a behavioral self-management intervention) on patient activation, self-management behaviors, daily functioning, and emergency roo...
The Efficacy and Safety of Rilzabrutinib in Patients Aged 10 to 65 Years With Sickle-cell Disease
This is a multicenter, randomized, double-blind, placebo-controlled, parallel-group, group-sequential study (Part A), followed by an open-label LTE period (Part B) to investigate the efficacy, and saf...
A Study to Evaluate BMS-986470 in Healthy Volunteers and Participants With Sickle Cell Disease
The purpose of this study is to evaluate the safety and tolerability, pharmacokinetics and pharmacodynamics, pH and food effect, and preliminary efficacy of BMS-986470 in healthy volunteers and partic...
Rollover Study for Patients With Sickle Cell Disease Who Have Completed a Prior Novartis-Sponsored Crizanlizumab Study
This is a multi-center multi-national rollover study to allow continued access to crizanlizumab for patients with sickle cell disease (SCD) who are on crizanlizumab treatment in a Novartis-sponsored s...
Minimizing Toxicity in HLA-identical Sibling Donor Transplantation for Children With Sickle Cell Disease
This multisite prospective study seeks to determine if HLA-identical sibling donor transplantation using alemtuzumab, low dose total-body irradiation, and sirolimus (Sickle transplant Using a Nonmyelo...
Clinical and Biomarker Effects of Depot Medroxyprogesterone Acetate in Females With Sickle Cell Disease
This research is being conducted to see if using an injectable contraception, Depot Medroxyprogesterone Acetate (Depo-Provera), can reduce the pain experienced by women with sickle cell disease. Part...
A Dose-Finding Study of Tebapivat to Assess Efficacy, and Safety in Participants With Sickle Cell Disease (SCD)
The main purpose of this study is to compare the effect of tebapivat versus placebo on anemia and to detect a dose-response for hemoglobin (Hb) response in participants with SCD....
Myeloablative Conditioning, Prophylactic Defibrotide and Haplo AlloSCT for Patients With Sickle Cell Disease
This is a follow-up trial to NYMC 526 (NCT01461837) to assess the safety, efficacy and toxicity of administering Defibrotide prophylaxis for high-risk sickle cell or beta thalassemia patients undergoi...
Pharmacokinetics, Pharmacodynamics and Safety of Epeleuton in Patients with Sickle Cell Disease
To assess the pharmacokinetics, pharmacodynamics and safety of Epeleuton capsules in adult SCD patients who are aged ≥18 years....
Reduced Intensity Conditioning and Familial HLA-Mismatched BMT for Non-Malignant Disorders
This study is designed to estimate the efficacy and toxicity of familial HLA mismatched bone marrow transplants in patients with non-malignant disease who are less than 21 years of age and could benef...
Evaluation of Efficacy and Safety of a Single Dose of CTX001 in Participants With Transfusion-Dependent β-Thalassemia and Severe Sickle Cell Disease
This is a single-dose, open-label study in participants with transfusion-dependent β-thalassemia (TDT) or severe sickle cell disease (SCD). The study will evaluate the safety and efficacy of autologou...
A Study of Immune Suppression Treatment for People With Sickle Cell Disease or β-Thalassemia Who Are Going to Receive an Allogeneic Hematopoietic Cell Transplantation (HCT)
Hematopoietic Cell Transplantation/HCT involves receiving healthy blood-forming cells (stem cells) from a donor to replace the diseased or damaged cells in participants' bone marrow. The researchers t...
Arginine Therapy for the Treatment of Pain in Children With Sickle Cell Disease
The purpose of this study is to determine whether giving extra arginine to patients with sickle cell disease seeking treatment for vaso-occlusive painful events (VOE) will decrease pain scores, decrea...
BEACON: A Study Evaluating the Safety and Efficacy of BEAM-101 in Patients With Severe Sickle Cell Disease
This is an open-label, single-arm, multicenter, Phase 1/2 study evaluating the safety and efficacy of the administration of autologous base edited CD34+ HSPCs (BEAM-101) in patients with severe SCD...
Evaluation of Safety and Efficacy of CTX001 in Pediatric Participants With Severe Sickle Cell Disease (SCD)
This is a single-dose, open-label study in pediatric participants with severe SCD and hydroxyurea (HU) failure or intolerance. The study will evaluate the safety and efficacy of autologous CRISPR-Cas9...
Gene Correction in Autologous CD34+ Hematopoietic Stem Cells (HbS to HbA) to Treat Severe Sickle Cell Disease
This study is a first-in-human, single-arm, open-label Phase I/II study of nula-cel in approximately 15 participants, diagnosed with severe Sickle Cell Disease. The primary objective is to evaluate sa...
Transplantation of Clustered Regularly Interspaced Short Palindromic Repeats Modified Hematopoietic Progenitor Stem Cells (CRISPR_SCD001) in Patients with Severe Sickle Cell Disease
This is an open label, non-randomized, 2-center, phase 1/2 trial of a single infusion of sickle allele modified cluster of differentiation (CD34+) hematopoietic stem progenitor cells (HSPCs) in subjec...
Top Cities for Sickle Cell Disease Clinical Trials
Sickle Cell Disease clinical trials are recruiting across 67 cities. Here are the cities with the most active studies:
About Sickle Cell Disease
Sickle cell disease is a group of inherited blood disorders where abnormal hemoglobin causes red blood cells to become rigid and sickle-shaped. It causes pain crises, organ damage, and shortened life expectancy. Treatment includes hydroxyurea, blood transfusions, and gene therapy.
Clinical trials are advancing new treatments for sickle cell disease. Currently, 20 studies are recruiting a combined 2,309 participants across the United States. Research is being conducted by 17 organizations including Novo Nordisk A/S, Novartis Pharmaceuticals, Children's Hospital Medical Center, Cincinnati and 14 others.
2026 Sickle Cell Disease Research Landscape
As of March 2026, the sickle cell disease clinical trial landscape includes 20 actively recruiting studies across 67 cities in the United States. These studies are collectively seeking 2,309 participants, with an average enrollment target of 115 per study.
Research is being led by 17 different organizations, including Novo Nordisk A/S, Novartis Pharmaceuticals, Children's Hospital Medical Center, Cincinnati, Sanofi, Bristol-Myers Squibb, and 12 others. The large number of sponsors reflects significant research interest and investment in sickle cell disease treatment advancement.
Geographically, sickle cell disease trials are most concentrated in Atlanta, Georgia (9 trials); Birmingham, Alabama (6 trials); Washington D.C., District of Columbia (6 trials); Los Angeles, California (5 trials); Philadelphia, Pennsylvania (5 trials) and 7 other cities.
Featured Sickle Cell Disease Studies
Highlighted recruiting studies for sickle cell disease, selected by enrollment size and research scope.
A Study to Evaluate How Well Etavopivat Works in People With Sickle Cell Disease
This study is conducted to confirm whether etavopivat works well at reducing the number of Vaso-occlusive crisis VOCs (sickle cell pain crises) caused by obstructions in blood vessels in adults and adolescents living with sickle cell disease. The study will also evaluate how well etavopivat can reduce the damage to different organs, improve your exercise tolerance and reduce fatigue in people with...
A Research Study Looking at Long-term Treatment With Etavopivat in People With Sickle Cell Disease or Thalassaemia
Etavopivat is a new medicine under development for treating blood disorders like sickle cell disease and thalassaemia. Sickle cell disease and thalassaemia are inherited blood disorders that affect haemoglobin. Haemoglobin is the protein that carries oxygen through the body. This study is looking into how safe treatment with etavopivat is and how well it works over a long period of time. The study...
A Study to Investigate the Efficacy and Safety of Crizanlizumab (5 mg/kg) Compared With Placebo in Adolescent and Adult Sickle Cell Disease Patients Who Experience Frequent Vaso-Occlusive Crises (SPARKLE)
A phase III, multi-center, randomized, placebo-controlled, double-blind study to assess efficacy and safety of crizanlizumab (5 mg/kg) versus placebo, with or without hydroxyurea/hydroxycarbamide therapy, in adolescent and adult Sickle Cell Disease patients with frequent vaso-occlusive crises.
Frequently Asked Questions About Sickle Cell Disease Clinical Trials
Are there sickle cell disease clinical trials near me?
Yes, there are 20 sickle cell disease clinical trials currently recruiting across 67+ cities in the United States, including Atlanta, Georgia; Birmingham, Alabama; Washington D.C., District of Columbia. Browse the studies above to find one at a location convenient for you.
How do I join a sickle cell disease clinical trial?
To join a sickle cell disease clinical trial: 1) Browse the available studies on this page, 2) Click on a study that interests you, 3) Check the study locations to find a site near you, 4) Review the eligibility criteria, and 5) Contact the study site or complete the eligibility form. The process is free and you can withdraw at any time.
Are sickle cell disease clinical trials free?
Yes, participation in sickle cell disease clinical trials is free. Study-related treatments, medical tests, and doctor visits are provided at no cost to participants. Many studies also offer compensation for your time and travel expenses.
What types of sickle cell disease treatments are being studied?
Current sickle cell disease clinical trials are testing a range of approaches. These include new drugs, combination therapies, medical devices, and other interventions sponsored by 17 research organizations.
Is it safe to participate in sickle cell disease clinical trials?
Clinical trials are carefully regulated by the FDA and institutional review boards (IRBs). All trials must follow strict safety protocols, and participants receive close medical monitoring throughout the study. You can withdraw from a trial at any time without penalty.
Data updated March 1, 2026 from ClinicalTrials.gov
About This Data
Clinical trial information on this page is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health (NIH) and National Library of Medicine (NLM). Study data is refreshed every hour to ensure accuracy.
Medical Disclaimer: The information provided on this page is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before making decisions about clinical trial participation or changes to your treatment plan.
Page reviewed by the HelloStudys Research Team · Last updated March 1, 2026 · Data from ClinicalTrials.gov