Not medical advice. This website is not medical advice, a diagnosis, a match to a trial, or a recommendation to join a study. Listings are plain-English rewrites of public ClinicalTrials.gov records. Whether a site is still enrolling, and whether you qualify, can only be confirmed by the study team and your clinician. Source registry: ClinicalTrials.gov. Editorial rules: methodology.

32 recruiting in this ClinicalTrials.gov snapshot · reviewed 2026-08-17

Sickle cell disease clinical trials, in English

Sickle cell studies may enroll children or adults, and they often count vaso-occlusive crises in the past year. Gene-therapy records have transplant-like eligibility and follow-up. Hydroxyurea use is frequently specified. This is not an emergency sickle-cell service. Sourced from ClinicalTrials.gov. Not a recommendation to join any study.

How to read this list

Each headline is a rewrite of registry fields (phase, intervention, condition). Open the NCT link before you call a site. Eligibility is decided by the study team, not by this page. See how to find a trial and eligibility explained.

Phases in this snapshot: Not a traditional drug phase (14) · Phase 1 (5) · Phase 1 / Phase 2 (4) · Phase 2 (4) · Phase 3 (3) · Phase 4 (2)

Cities that appear on these records

  • Bethesda, Maryland · 10
  • Houston, Texas · 8
  • London, United Kingdom · 7
  • Birmingham, Alabama · 6
  • Greenville, North Carolina · 6
  • Atlanta, Georgia · 6
  • New York, New York · 6
  • Chicago, Illinois · 5

Browse by US state · city hubs

RecruitingNot a traditional drug phaseWashington D.C., District of Columbia
Natural History of Sickle Cell Disease

This study is not a treatment protocol and no experimental treatments are involved. Study participants may be seen as needed for clinical, translational and basic research studies, or as medically indicated.

NCT00081523 · Official ClinicalTrials.gov record · National Heart, Lung, and Blood Institute (NHLBI)

RecruitingNot a traditional drug phaseBethesda, Maryland
Blood Sampling for Research Related to Sickle Cell Disease

This study will collect representative blood samples from healthy children and adults and from children and adults who have unique red blood cell features that are related to sickle cell disease. Sickle cell disease is a blood disease that limits the ability of red blood cells to carry oxygen throughout the body.

NCT00542230 · Official ClinicalTrials.gov record · National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

RecruitingPhase 1 / Phase 2Davis, California
Phase 1 / Phase 2: testing CRISPR_SCD001 for Sickle Cell Disease

This is an open label, non-randomly assigned, 2-center, phase 1/2 trial of a single infusion of sickle allele modified cluster of differentiation (CD34+) hematopoietic stem progenitor cells (HSPCs) in subjects with in subjects ≥12 years old to 35 years old severe Sickle Cell Disease (SCD). The study will measure the hematopoietic stem cell transplantation (HSCT) using CRISPR/Cas9 edited red blood cells (known as CRISPR\_SCD001 Drug Product).

NCT04774536 · Official ClinicalTrials.gov record · Mark Walters, MD

RecruitingNot a traditional drug phaseBirmingham, Alabama
Not a traditional drug phase: Biologic Specimen Collection for Sickle Cell Trait

The main purpose of this study is to create a longitudinal cohort of those with Sickle Cell Trait (SCT) to better understand the hematologic phenotype for those that carry HbS, assess for differences in those with varying quantities of HbS and assess for potential clinical complications of SCT.

NCT06071377 · Official ClinicalTrials.gov record · National Alliance for Sickle Cell Centers

RecruitingNot a traditional drug phaseParis
Not a traditional drug phase: testing Blood sample for Invasive PreNatal Diagnosis in a Context of Family History of Single-gene Disorders, Including

Cell-free fetal DNA (cffDNA) is present in the maternal blood from the early first trimester of gestation and makes up 5%-20% of the total circulating cell-free DNA (cfDNA) in maternal plasma. Its presence in maternal plasma has allowed development of noninvasive prenatal diagnosis for single-gene disorders (SGD-NIPD).

NCT06147414 · Official ClinicalTrials.gov record · Assistance Publique - Hôpitaux de Paris

RecruitingNot a traditional drug phaseMobile, Alabama
Not a traditional drug phase: CBT+ Health coach for Pain

The study, known as the Peer suppoRt for adolescents and Emerging adults with Sickle cell pain: promoting ENgagement in Cognitive behavioral thErapy (PRESENCE), aims to determine the effectiveness of digital CBT in reducing pain, opioid use, and healthcare utilization among AYAs with SCD. It also seeks to understand the role of personalized peer support in enhancing engagement and outcomes of digital CBT interventions.

NCT06374238 · Official ClinicalTrials.gov record · University of Pittsburgh

RecruitingPhase 3Birmingham, Alabama
Phase 3: testing Crizanlizumab for Sickle Cell Disease

A phase III, multi-center, randomly assigned, compared with a dummy treatment, neither you nor the study doctors know who gets the real treatment study to assess how well it works and safety of crizanlizumab (5 mg/kg) versus dummy treatment (placebo), with or without hydroxyurea/hydroxycarbamide therapy, in adolescent and adult Sickle Cell Disease patients with frequent vaso-occlusive crises.

NCT06439082 · Official ClinicalTrials.gov record · Novartis Pharmaceuticals

RecruitingPhase 1Memphis, Tennessee
Phase 1: testing Plerixafor for Sickle Cell Disease

This study is being done to test the safety of a new treatment called gene editing in Sickle Cell Disease (SCD) patients and to see if a single dose of this genetically modified cellular product will increase the amount of a certain hemoglobin called fetal hemoglobin (HbF) and help reduce the symptoms of SCD. Primary Objective * To assess the safety of autologous infusion of clustered regularly interspaced palindromic repeats (CRISPR)/ CRISPR associated protein (Cas9)-edited CD34+ hematopoietic stem and progenitor cells (HSPCs) in patients with severe SCD.

NCT06506461 · Official ClinicalTrials.gov record · St. Jude Children's Research Hospital

RecruitingPhase 1 / Phase 2Birmingham, Alabama
Phase 1 / Phase 2: testing ITU512 for Sickle Cell Disease

This study wants to measure the safety, tolerability, pharmacokinetics (PK), and preliminary food effect of ITU512 as well as the fetal hemoglobin (HbF)-inducing capacity of ITU512. This will be the first evaluation of the potential therapeutic effect of ITU512 in healthy participants and patients with sickle cell disease (SCD).

NCT06546670 · Official ClinicalTrials.gov record · Novartis Pharmaceuticals

RecruitingPhase 4Atlanta, Georgia
Phase 4: testing Depot medroxyprogesterone acetate (DMPA) for Sickle Cell Disease (SCD)

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. Participants in this study will be adult women with sickle cell disease who regularly experience sickle cell pain.

NCT06665997 · Official ClinicalTrials.gov record · University of Pennsylvania

RecruitingPhase 2Oakland, California
Phase 2: testing CSL889 for Sickle Cell Disease Vaso-occlusive Crisis

This is a phase 2, randomly assigned, multiple-dose, compared with a dummy treatment study designed to measure the safety, how well it works, and pharmacokinetics (PK) of CSL889 (human hemopexin) when given intravenously (IV) to adults and adolescents with sickle cell disease (SCD) experiencing vaso-occlusive crises (VOC). The main objectives of the study are to measure the whether it is safe and how hard side effects are to live with of CSL889 in study participants, and to assess how CSL889 affects the time it takes for VOC to resolve in participants with SCD.

NCT06699849 · Official ClinicalTrials.gov record · CSL Behring

RecruitingPhase 3Birmingham, Alabama
Phase 3: testing Rilzabrutinib for Sickle Cell Disease

This is a multicenter, randomly assigned, neither you nor the study doctors know who gets the real treatment, compared with a dummy treatment, parallel-group, flexible-adaptive, group-sequential study (Part A), followed by an open-label LTE period (Part B) to investigate the how well it works, and safety of rilzabrutinib in participants with sickle-cell disease (SCD). Study details include: * Study duration: a 52-week neither you nor the study doctors know who gets the real treatment period (Part A), followed by an open-label LTE period (Part B).

NCT06975865 · Official ClinicalTrials.gov record · Sanofi

RecruitingNot a traditional drug phaseAtlanta, Georgia
Not a traditional drug phase: tAN device for Sickle Cell Disease

The goal of this study is to measure the effects of transauricular vagus and trigeminal nerve stimulation on the treatment of pain in children with Sickle Cell Disease. * The primary objective is to determine the feasibility of using a tAN device to treat pain in pediatric participants with SCD by assessing the completion rate, stimulation tolerability, and acceptability of the intervention measures.

NCT07090668 · Official ClinicalTrials.gov record · Emory University

RecruitingNot a traditional drug phaseBirmingham, Alabama
Not a traditional drug phase: Bone Marrow Transplant with Ossium's HPC, Marrow (bone marrow recovered from deceased organ and tissue donors) for Bone Marrow Transplant (BMT)

Ossium recognizes that not all patients who could benefit from Ossium's HPC, Marrow can access the PRESERVE trial for logistical or eligibility reasons. The HOPE program is expanded access program to serve these patients by providing our bone marrow product

NCT07145411 · Official ClinicalTrials.gov record · Ossium Health, Inc.

RecruitingPhase 2Little Rock, Arkansas
Phase 2: testing Anumigilimab for Sickle Cell Disease

This is a phase 2a, global, multicenter, randomly assigned, neither you nor the study doctors know who gets the real treatment, compared with a dummy treatment study investigating the safety of anumigilimab administered subcutaneously (SC) at the maximum tolerated dose (MTD) in adult participants with SCD. The primary aim of the study is to assess the safety of anumigilimab in participants with SCD.

NCT07224360 · Official ClinicalTrials.gov record · CSL Behring

RecruitingPhase 2Toronto, Ontario
Phase 2: testing Senicapoc for Sickle Cell Disease

SIL-8301 (senicapoc) is being developed for the chronic treatment of patients with sickle cell disease in both adults and children. this study wants to compare the effects of senicapoc to dummy treatment (placebo) in patients with sickle cell disease that have had fewer than 2 acute sickle-related painful crises per year over the preceding 2 years, and have a predominantly hemolytic phenotype, defined as evidence of ongoing hemolysis and a baseline Hb of 9.5 g/dL or less, despite receiving hydroxyurea (an oral drug used for treatment of sickle cell disease) as standard of care.

NCT07282210 · Official ClinicalTrials.gov record · Biossil Inc.

RecruitingPhase 4Abidjan
Phase 4: Gazelle-Multispectral point of care testing for newborn sickle cell disease screening; and initiation of early comprehensive clinical interventions for Sickle Cell Disease (SCD)

The goal of this clinical trial is to learn if a multifaceted intervention composed of Gazelle-Multispectral sickle cell disease (SCD) point of care testing (POCT) and early initiation of comprehensive SCD care in children with SCD disease aged 0 - 6 months can improve their clinical outcomes. The main questions it aims to answer are: * Does the intervention lower the number of SCD-related illnesses?

NCT07488520 · Official ClinicalTrials.gov record · Swiss Tropical & Public Health Institute

RecruitingNot a traditional drug phaseBaltimore, Maryland
Not a traditional drug phase: Sham 2D Headset Control for Sickle Cell Disease

This randomly assigned pilot study will measure the feasibility, tolerability, and preliminary analgesic effect of headset-based virtual reality (VR) interventions for adults with sickle cell disease (SCD) experiencing vaso-occlusive crisis (VOC) treated in an infusion center. Up to 50 you would be enrolled, provide informed consent, and undergo randomization during routine outpatient sickle cell clinic visits when they are clinically stable and not experiencing an acute VOC.

NCT07674277 · Official ClinicalTrials.gov record · University of Maryland, Baltimore

RecruitingPhase 1Boston, Massachusetts
Phase 1: testing autologous bone marrow derived CD34+ HSPCs electroporated with BCL11A enhancer targeting Cas9 ribonucleoprotein for Sickle Cell Disease

A promising approach for the treatment of genetic diseases is called gene therapy. Gene therapy is a relatively new field of medicine that uses genetic material (mostly deoxyribonucleic acid (DNA)) from the patient to treat his or her own disease.

NCT07708350 · Official ClinicalTrials.gov record · Daniel Bauer

RecruitingNot a traditional drug phaseNhamatanda, Sofala
Not a traditional drug phase: Point-of-care testing (POCT) -Patient participants for Sickle Cell Disease

The overarching goal of this study is to measure the feasibility of a new methodology that combines three multi-level implementation strategies to optimize the population-level uptake of essential evidence-based, standard of care treatments for infants with sickle cell disease (SCD) in low-resource settings.

NCT07719972 · Official ClinicalTrials.gov record · St. Jude Children's Research Hospital

FAQ: Sickle cell disease trials

How do I find recruiting Sickle cell disease clinical trials?

This hub lists 32 recruiting Sickle cell disease studies from a ClinicalTrials.gov snapshot, rewritten in plain English. Each card links to its NCT record. You can also search the official registry for “sickle cell” at https://clinicaltrials.gov/search?cond=sickle%20cell.

What does a Sickle cell disease trial page on PlainTrials include?

A phase explainer, a plain-English summary grounded in the brief summary, inclusion/exclusion extracted from the public eligibility block, sponsor name, and any central contact the sponsor published. It is not a match to a trial.

Where are Sickle cell disease studies located in this snapshot?

Sites that appear on these records include Bethesda, Maryland; Houston, Texas; London, United Kingdom; Birmingham, Alabama; Greenville, North Carolina. A city on a record is not a guarantee that the site is taking new patients this week — call the NCT contact.

Can PlainTrials tell me if I qualify for a Sickle cell disease study?

No. Eligibility is decided by the study team using the protocol, labs, and consent. Our “who it is for” list is a readable extract of public inclusion text only.