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Showing 1–24 of 42 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Sickle Cell Trait Clear all
Enrolling by invitation No phase listed Observational

A Long-Term Follow-Up Study of Participants With Sickle Cell Disease or Transfusion Dependent β-Thalassemia Who Received EDIT-301

NCT06363760
View directory record Official record
Conditions
Sickle Cell Disease, Transfusion-dependent Beta-Thalassemia, Hemoglobinopathies
Interventions
Safety and efficacy assessments
Other
Lead sponsor
Editas Medicine, Inc.
Industry
Eligibility
12 Years to 50 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2040
U.S. locations
16
States / cities
Oakland, California • Aurora, Colorado • New Haven, Connecticut + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2025 · Synced Jul 21, 2026, 10:20 PM EDT
Terminated Phase 3 Interventional Results available

A Study of a Single Dose of Inclacumab to Reduce Re-admission in Participants With Sickle Cell Disease and Recurrent Vaso-occlusive Crises

NCT04927247
View directory record Official record
Conditions
Sickle Cell Disease, Vaso-occlusive Crisis, Vaso-occlusive Pain Episode in Sickle Cell Disease
Interventions
Inclacumab, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
17
States / cities
Mobile, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 11 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2024 · Synced Jul 21, 2026, 10:20 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

A Study Evaluating the Safety and Efficacy of EDIT-301 in Participants With Severe Sickle Cell Disease (RUBY)

NCT04853576
View directory record Official record
Conditions
Sickle Cell Disease, Hemoglobinopathies
Interventions
EDIT-301
Genetic
Lead sponsor
Editas Medicine, Inc.
Industry
Eligibility
12 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
21
States / cities
Oakland, California • Aurora, Colorado • New Haven, Connecticut + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2025 · Synced Jul 21, 2026, 10:20 PM EDT
Completed No phase listed Observational

Diabetic Retinopathy and Sickle Trait

NCT00720317
View directory record Official record
Conditions
Diabetic Retinopathy, Sickle Cell Trait
Interventions
Not listed
Lead sponsor
Medical University of South Carolina
Other
Eligibility
Not listed
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 15, 2010 · Synced Jul 21, 2026, 10:20 PM EDT
Not listed Phase 2 Interventional

A Randomized Trial of LOVAZA in Pediatric Sickle Cell Disease (SCD)

NCT01202812
View directory record Official record
Conditions
Sickle Cell Disease, HEMOGLOBIN SS, Hemoglobin S Beta-0 Thalassemia, Inflammation, Quality of Life
Interventions
Omega-3 Fatty Acids: Eicosapentaenoic Acid (EPA) and Docosahexaenoic Acid (DHA), Placebo Capsules
Dietary Supplement · Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
10 Years to 19 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 24, 2010 · Synced Jul 21, 2026, 10:20 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Red Cell Half Life Determination in Patients With and Without Sickle Cell Disease

NCT04476277
View directory record Official record
Conditions
Sickle Cell Disease, Sickle Cell Anemia
Interventions
Biotin label
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 99 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 12, 2024 · Synced Jul 21, 2026, 10:20 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Achieving Understanding of the Natural History of Sickle Cell Trait (AUNT)

NCT06071377
View directory record Official record
Conditions
Sickle Cell Trait
Interventions
Biologic Specimen Collection
Other
Lead sponsor
National Alliance for Sickle Cell Centers
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
10
States / cities
Birmingham, Alabama • Loma Linda, California • Wilmington, Delaware + 7 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Jul 21, 2026, 10:20 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Genotype -Phenotype Correlation of PKLR Variants With Pyruvate Kinase, 2,3-Diphosphglycerate and Adenosine Triphosphate Activities in Red Blood Cells of People With Sickle Cell Disease

NCT03685721
View directory record Official record
Conditions
Sickle Cell, PKLR Variants, Adenosine Triphosphate Activities
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 80 Years
Enrollment
800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Blood Sampling for Research Related to Sickle Cell Disease

NCT00542230
View directory record Official record
Conditions
Sickle Cell Trait, Sickle Cell Disease, Sickle Cell Anemia
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 100 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Terminated Phase 2 Interventional Results available

Trial of Oral Glutamine in Patients With Sickle Cell Anemia

NCT00131508
View directory record Official record
Conditions
Anemia, Sickle Cell
Interventions
Glutamine, Placebo
Drug
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
5 Years to 18 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 25, 2017 · Synced Jul 21, 2026, 10:20 PM EDT
Terminated Phase 2 Interventional

Effects of HQK-1001 in Patients With Sickle Cell Disease

NCT01601340
View directory record Official record
Conditions
Sickle Cell Disease, Sickle Cell Anemia, Sickle Cell Disorders, Hemoglobin S Disease, Sickling Disorder Due to Hemoglobin S
Interventions
HQK-1001, Placebo
Drug
Lead sponsor
HemaQuest Pharmaceuticals Inc.
Industry
Eligibility
12 Years to 60 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
11
States / cities
Mobile, Alabama • Oakland, California • Washington D.C., District of Columbia + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2015 · Synced Jul 21, 2026, 10:20 PM EDT
Recruiting Phase 3 Interventional

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)

NCT06439082
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Crizanlizumab, Placebo
Biological · Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
12 Years to 100 Years
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
14
States / cities
Birmingham, Alabama • Orange, California • Washington D.C., District of Columbia + 11 more
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Completed Phase 3 Interventional Results available

A Study to Assess the Safety and Efficacy of Inclacumab in Participants With Sickle Cell Disease Experiencing Vaso-occlusive Crises

NCT04935879
View directory record Official record
Conditions
Sickle Cell Disease, Vaso-occlusive Pain Episode in Sickle Cell Disease, Vaso-occlusive Crisis
Interventions
Inclacumab, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years and older
Enrollment
241 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
22
States / cities
Mobile, Alabama • Little Rock, Arkansas • Orange, California + 7 more
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Jul 21, 2026, 10:20 PM EDT
Recruiting Phase 1 Interventional

131I-apamistamab-based Conditioning for Hematopoietic Stem Cell Transplant (HSCT) in Advanced Sickle Cell Disease (SCD)

NCT07015684
View directory record Official record
Conditions
Sickling Disorder Due to Hemoglobin S
Interventions
131I-apamistmab, Sirolimus, Campath, Total Body Irradiation, Exchange Transfusion, Planar gamma imaging
Drug · Radiation · Procedure
Lead sponsor
Columbia University
Other
Eligibility
12 Years to 50 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2032
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Completed Phase 1 Interventional Results available

A Study to Evaluate GBT021601-012 Single Dose and Multiple Dose in Participants With Sickle Cell Disease (SCD)

NCT04983264
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
GBT021601
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 60 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
3
States / cities
Miami, Florida • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 9, 2024 · Synced Jul 21, 2026, 10:20 PM EDT
Completed No phase listed Observational

Developing the Family Map: Looking at Communal Coping

NCT01633021
View directory record Official record
Conditions
Sickle Cell, Diabetes, Cancer, Cardiovascular Disease, Genetic Screening
Interventions
Not listed
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
18 Years to 100 Years
Enrollment
1,061 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
3
States / cities
Bethesda, Maryland • Cincinnati, Ohio • Lewisburg, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Completed No phase listed Observational

Comparison of Two Methods of Transfusion for Stroke Prevention in Sickle Cell

NCT02561312
View directory record Official record
Conditions
Anemia, Sickle Cell, Sickling Disorder Due to Hemoglobin S
Interventions
Rapid manual partial exchange transfusion, Simple Transfusion
Other
Lead sponsor
Chattanooga-Hamilton County Hospital Authority
Other
Eligibility
3 Years to 25 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 26, 2018 · Synced Jul 21, 2026, 10:20 PM EDT
Completed No phase listed Observational Results available

A Study to Learn About Sickle Cell Disease In Adult Patients

NCT05407805
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Electronic Diary
Other
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
4
States / cities
Hollywood, Florida • Upper Marlboro, Maryland • Waltham, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Completed Not applicable Interventional Results available

Increasing Documentation and Disclosure of Sickle Cell Trait Status: An Implementation Science Approach

NCT05387564
View directory record Official record
Conditions
Sickle Cell Trait
Interventions
SCT Documentation and Disclosure Toolkit (SCT-DD)
Behavioral
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
Not listed
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Bone Loss, Physical Function and Frailty in Older Women With Sickle Cell Trait Sickle Cell Trait

NCT07083531
View directory record Official record
Conditions
Sickle Cell Disease, Sickle Cell Trait
Interventions
Healthy volunteers without SCT, Healthy volunteers with SCT
Other
Lead sponsor
UConn Health
Other
Eligibility
50 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Jul 21, 2026, 10:20 PM EDT
Active, not recruiting Not applicable Interventional

CHOICES3: Sickle Cell Disease Parenting CHOICES

NCT05292781
View directory record Official record
Conditions
Sickle Cell Disease, Sickle Cell Trait
Interventions
CHOICES, eBook
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 45 Years
Enrollment
506 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Completed Phase 2 Interventional

A Study of Etavopivat in Patients With Thalassemia or Sickle Cell Disease

NCT04987489
View directory record Official record
Conditions
Sickle Cell Disease, Thalassemia
Interventions
Etavopivat tablets
Drug
Lead sponsor
Forma Therapeutics, Inc.
Industry
Eligibility
12 Years to 65 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
14
States / cities
Cerritos, California • Los Angeles, California • Oakland, California + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Jul 21, 2026, 10:20 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Safety and Tolerability of Escalating Doses of Fostamatinib in Subjects With Stable Sickle Cell Disease

NCT05904093
View directory record Official record
Conditions
Sickle Cell Disease, Hb-SS Disease, Hemoglobin S, Disease Sickle Cell Anemia, Sickle Cell Disorders, Hemoglobin Beta Thalassemia Disease
Interventions
Fostamatinib
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Jul 21, 2026, 10:20 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Mobilization and Handling of Stem Cells for Transplant From Healthy Volunteers With Sickle Cell Trait

NCT00005782
View directory record Official record
Conditions
Sickle Cell Trait
Interventions
Granulocyte colony-stimulating factor, Leukapheresis
Drug · Procedure
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
Not listed
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 21, 2026, 10:20 PM EDT