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ClinicalTrials.gov public records Last synced Oct 21, 2026, 11:58 AM EDT

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Showing 1–24 of 42 matching trials from the live ClinicalTrials.gov search.
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 2, 2025 · Synced Oct 21, 2026, 11:58 AM 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 13, 2024 · Synced Oct 21, 2026, 11:58 AM EDT
Recruiting Phase 1 Interventional

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 Disorders, Sickle Cell Disease, Hemoglobin S, Hb-SS Disease, Disease Sickle Cell Anemia
Interventions
Fostamatinib
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 21, 2026, 11:58 AM 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 16, 2010 · Synced Oct 21, 2026, 11:58 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Sickle Cell Hemoglobinopathies and Bone Health

NCT02306993
View directory record Official record
Conditions
Sickle Cell Disease, Sickle Cell Trait
Interventions
Healthy volunteers without SCT, Healthy volunteers with SCT, Volunteers with SCD
Other
Lead sponsor
UConn Health
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2028
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 21, 2026, 11:58 AM 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 10, 2024 · Synced Oct 21, 2026, 11:58 AM 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 10, 2026 · Synced Oct 21, 2026, 11:58 AM EDT
Terminated Phase 1 Interventional

Study of GBT021601 in Participants With Renal Impairment

NCT05878704
View directory record Official record
Conditions
Renal Impairment
Interventions
GBT021601
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
4
States / cities
Lake Forest, California • Tustin, California • Miami, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2024 · Synced Oct 21, 2026, 11:58 AM 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 25, 2010 · Synced Oct 21, 2026, 11:58 AM 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 2, 2025 · Synced Oct 21, 2026, 11:58 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Sickle Cell Trait in Football Players

NCT01891877
View directory record Official record
Conditions
Sickle Cell Trait
Interventions
Not listed
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 20, 2014 · Synced Oct 21, 2026, 11:58 AM 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 10, 2026 · Synced Oct 21, 2026, 11:58 AM 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 Aug 17, 2026 · Synced Oct 21, 2026, 11:58 AM 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 26, 2017 · Synced Oct 21, 2026, 11:58 AM 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 27, 2018 · Synced Oct 21, 2026, 11:58 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate GBT021601 in Single and Multiple Doses in Healthy Participants

NCT05036512
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
GBT021601
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 25, 2023 · Synced Oct 21, 2026, 11:58 AM 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 24, 2025 · Synced Oct 21, 2026, 11:58 AM 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 7, 2026 · Synced Oct 21, 2026, 11:58 AM EDT
Completed No phase listed Observational

Collection and Storage of Umbilical Cord Stem Cells for Treatment of Sickle Cell Disease

NCT00012545
View directory record Official record
Conditions
Sickle Cell Disease, Sickle Cell Trait
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 45 Years
Enrollment
307 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 9, 2026 · Synced Oct 21, 2026, 11:58 AM EDT
Active, not recruiting Phase 3 Interventional Results available

Study of Two Doses of Crizanlizumab Versus Placebo in Adolescent and Adult Sickle Cell Disease Patients

NCT03814746
View directory record Official record
Conditions
Sickle Cell Disease (SCD)
Interventions
Crizanlizumab (SEG101), Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
12 Years to 100 Years
Enrollment
253 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
5
States / cities
Atlanta, Georgia • Boston, Massachusetts • Charlotte, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 21, 2026, 11:58 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Siplizumab for Sickle Cell Disease Transplant

NCT06078696
View directory record Official record
Conditions
Anemia, Sickle Cell
Interventions
Siplizumab, Exchange Transfusion, Total Body Irradiation, Stem Cell Infusion, Cyclophosphamide 50mg, Mesna, Sirolimus Oral Tablet, Rituximab or Biosimilar
Drug · Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 50 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Oct 21, 2026, 11:58 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Sickle Cell Disease and the Genomic and Gene Therapy Needs of Stakeholders

NCT04416178
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Not listed
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
13 Years and older
Enrollment
352 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 21, 2026, 11:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Exercise on Biomarkers in SCT

NCT04273022
View directory record Official record
Conditions
Sickle Cell Trait
Interventions
Exercise
Other
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 70 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Oct 21, 2026, 11:58 AM 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 31, 2025 · Synced Oct 21, 2026, 11:58 AM EDT