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ClinicalTrials.gov public records Last synced Jul 22, 2026, 4:51 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: TCD Clear all
Terminated Phase 3 Interventional Results available

Study to Evaluate the Effect of GBT440 on TCD in Pediatrics With Sickle Cell Disease

NCT04218084
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Voxelotor, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
2 Years to 14 Years
Enrollment
236 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
13
States / cities
Washington D.C., District of Columbia • Miami, Florida • Atlanta, Georgia + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Jul 22, 2026, 4:51 PM EDT
Completed Phase 3 Interventional

Long-term Safety and Efficacy Follow-up of BIIB111 for the Treatment of Choroideremia and BIIB112 for the Treatment of X-Linked Retinitis Pigmentosa

NCT03584165
View directory record Official record
Conditions
Choroideremia, X-Linked Retinitis Pigmentosa
Interventions
BIIB111, BIIB112
Genetic
Lead sponsor
NightstaRx Ltd, a Biogen Company
Other
Eligibility
18 Years and older · Male only
Enrollment
277 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
10
States / cities
Los Angeles, California • Gainesville, Florida • Miami, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Jul 22, 2026, 4:51 PM EDT
Terminated Phase 3 Interventional Results available

Sparing Conversion to Abnormal TCD (Transcranial Doppler) Elevation (SCATE)

NCT01531387
View directory record Official record
Conditions
Sickle Cell Anemia
Interventions
Hydroxyurea
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
2 Years to 10 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 7, 2016 · Synced Jul 22, 2026, 4:51 PM EDT
Completed No phase listed Observational

NOninVasive Intracranial prEssure From Transcranial doppLer Ultrasound Development of a Comprehensive Database of Multimodality Monitoring Signals for Brain-Injured Patients

NCT04548596
View directory record Official record
Conditions
Traumatic Brain Injury, Subarachnoid Hemorrhage, Intracerebral Hemorrhage, Liver Failure, Ischemic Stroke
Interventions
Transcranial Doppler
Diagnostic Test
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2025
U.S. locations
3
States / cities
Davis, California • San Francisco, California • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Jul 22, 2026, 4:51 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

UTLight-transcranial Doppler Assessment of Regional Cerebral Autoregulation

NCT02178787
View directory record Official record
Conditions
Diabetes
Interventions
Not listed
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
50 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 15, 2017 · Synced Jul 22, 2026, 4:51 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Transcranial Doppler(TCD) Evaluation of High Intensity Transient Signals and Carotid Disease

NCT05829200
View directory record Official record
Conditions
Asymptomatic Carotid Stenosis, Symptomatic Carotid Stenosis, TCD, HITS
Interventions
Transcranial Doppler (TCD)
Device
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 24, 2023 · Synced Jul 22, 2026, 4:51 PM EDT
Not yet recruiting No phase listed Observational

Brain Blood Flow and Cerebral Autoregulation Monitoring in Critically Ill Children

NCT07613918
View directory record Official record
Conditions
Critical Illness, Pediatric Critical Illness, Respiratory Failure, Traumatic Brain Injury, Cardiac Arrest
Interventions
Transcranial Doppler
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
1 Day to 17 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Jul 22, 2026, 4:51 PM EDT
Recruiting Phase 2 Interventional

MT2021-08T Cell Receptor Alpha/Beta Depletion PBSC Transplantation for Heme Malignancies

NCT05735717
View directory record Official record
Conditions
Hematologic Malignancy, Acute Leukemia, Remission, Acute Myeloid Leukemia, Acute Lymphoblastic Leukemia, AML, TP53, Intrachromosomal Amplification of Chromosome 21, Cytogenetic Abnormality, CNS Leukemia, Minimal Residual Disease, Myelodysplasia, Juvenile Myelomonocytic Leukemia, Somatic Mutation, PTPN11 Gene Mutation, N-RAS Gene Amplification, Neurofibromatosis 1, NF1 Mutation, CBL Gene Mutation, Monosomy 7, Chromosome Abnormality, Fetal Hemoglobin, Lymphoblastic Lymphoma, High Grade Non-Hodgkin's Lymphoma, Adult
Interventions
Fludarabine, Busulfan, Melphalan, Rituximab, Levetiracetam, Alpha/Beta T Cell-Depleted Hematopoietic Stem Cells, Thymoglobulin, Cyclophosphamide
Drug · Biological
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
Up to 60 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Jul 22, 2026, 4:51 PM EDT
Completed No phase listed Observational

Natural Disease Progression in Participants With Choroideremia

NCT04795206
View directory record Official record
Conditions
Choroideremia
Interventions
No Intervention
Other
Lead sponsor
Biogen
Industry
Eligibility
10 Years and older
Enrollment
1,178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 7, 2021 · Synced Jul 22, 2026, 4:51 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Inherited Retinal Degenerative Disease Registry

NCT02435940
View directory record Official record
Conditions
Eye Diseases Hereditary, Retinal Disease, Achromatopsia, Bardet-Biedl Syndrome, Bassen-Kornzweig Syndrome, Batten Disease, Best Disease, Choroidal Dystrophy, Choroideremia, Cone Dystrophy, Cone-Rod Dystrophy, Congenital Stationary Night Blindness, Enhanced S-Cone Syndrome, Fundus Albipunctatus, Goldmann-Favre Syndrome, Gyrate Atrophy, Juvenile Macular Degeneration, Kearns-Sayre Syndrome, Leber Congenital Amaurosis, Refsum Syndrome, Retinitis Pigmentosa, Retinitis Punctata Albescens, Retinoschisis, Rod-Cone Dystrophy, Rod Dystrophy, Rod Monochromacy, Stargardt Disease, Usher Syndrome
Interventions
Not listed
Lead sponsor
Foundation Fighting Blindness
Other
Eligibility
Not listed
Enrollment
20,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2037
U.S. locations
1
States / cities
Columbia, Maryland
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Jul 22, 2026, 4:51 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of BIIB111 for the Treatment of Choroideremia

NCT03496012
View directory record Official record
Conditions
Choroideremia
Interventions
BIIB111
Genetic
Lead sponsor
Biogen
Industry
Eligibility
18 Years and older · Male only
Enrollment
169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
8
States / cities
Los Angeles, California • Miami, Florida • Baltimore, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 6, 2023 · Synced Jul 22, 2026, 4:51 PM EDT
Active, not recruiting Phase 1 Interventional

Study to Evaluate Safety of RTx-015 Injection in Retinitis Pigmentosa or Choroideremia Patients (ENVISION)

NCT06460844
View directory record Official record
Conditions
Retinitis Pigmentosa, Choroideremia
Interventions
RTx-015
Genetic
Lead sponsor
Ray Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
4
States / cities
Beverly Hills, California • Orange, California • Pittsburgh, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Jul 22, 2026, 4:51 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

CLOTBUST Hands-Free: A Phase I/II Pilot Safety Trial

NCT01240356
View directory record Official record
Conditions
Stroke
Interventions
2-MHz transcranial Doppler ultrasound, 2-MHz transcranial Doppler ultrasound insonation
Device
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
2
States / cities
Birmingham, Alabama • Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2016 · Synced Jul 22, 2026, 4:51 PM EDT
Completed Phase 1 Interventional

Haploidentical Stem Cell Transplant for Patients With Sickle Cell Disease and Prior Stroke or Abnormal Transcranial Ultrasound

NCT00152113
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Hematopoietic Stem Cell Transplantation, CliniMACS, See intervention description
Procedure · Device · Drug
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
2 Years to 16 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 25, 2017 · Synced Jul 22, 2026, 4:51 PM EDT
Enrolling by invitation Phase 2 Interventional

Stroke Prevention With Hydroxyurea Enabled Through Research and Education (SPHERE)

NCT03948867
View directory record Official record
Conditions
Sickle Cell Anemia in Children
Interventions
Hydroxyurea, Elevated Arm TCD Examination, Normal Arm TCD Examination
Drug · Diagnostic Test
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
2 Years to 16 Years
Enrollment
202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 16, 2025 · Synced Jul 22, 2026, 4:51 PM EDT
Terminated No phase listed Observational Results available

Variability in Transcranial Doppler Technique in Neuro-Critical Care Patients

NCT04583163
View directory record Official record
Conditions
Cerebral Aneurysm, Stroke, Vasospasm, Cerebral, Subarachnoid Hemorrhage, Aneurysmal, Aneurysmal Subarachnoid Hemorrhage, Cerebral Ischemia
Interventions
Transcranial Doppler
Diagnostic Test
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years and older
Enrollment
3 participants
Timeline
2020 – 2022
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 14, 2025 · Synced Jul 22, 2026, 4:51 PM EDT
Completed Phase 2 Interventional Results available

Choroideremia Gene Therapy Clinical Trial

NCT02553135
View directory record Official record
Conditions
Choroideremia
Interventions
Injection of AAV2-REP1 (10e11 vg)
Biological
Lead sponsor
Byron Lam
Other
Eligibility
18 Years and older · Male only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jul 28, 2019 · Synced Jul 22, 2026, 4:51 PM EDT
Recruiting Phase 2 Interventional

Alpha/Beta TCD HCT in Patients With Inherited BMF Disorders

NCT03579875
View directory record Official record
Conditions
Fanconi Anemia, Severe Aplastic Anemia, Myelodysplastic Syndromes, T Cell Receptor Alpha/Beta Depletion, Telomere Biology Disorder, Bone Marrow Failure, Dyskeratosis Congenita, Telomere Biology Disorders
Interventions
Total Body Irradiation (TBI) (Plan 1), Cyclophosphamide (CY) (Plan 1), Fludarabine (FLU), Methylprednisolone (MP), Donor mobilized PBSC infusion, G-CSF, Cyclophosphamide (CY) (Plan 2), Rituximab, Busulfan, Alemtuzumab, Melphalan
Drug · Device
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
Up to 65 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2029
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 29, 2026 · Synced Jul 22, 2026, 4:51 PM EDT
Recruiting No phase listed Observational

Observational Study to Assess Endpoint Operational Feasibility & Measurement Properties in Patients with Retinal Degeneration

NCT06375239
View directory record Official record
Conditions
Retinitis Pigmentosa, Choroideremia, Stargardt Macular Dystrophy, Stargardt Disease, Geographic Atrophy from Age-related Macular Degeneration, X-lined Retinoschisis, Retinal Dystrophies
Interventions
Not listed
Lead sponsor
Ray Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Jan 7, 2025 · Synced Jul 22, 2026, 4:51 PM EDT
Recruiting Not applicable Interventional

Respiratory Muscle Training to Improve Cerebrovascular and Immune Function

NCT07406295
View directory record Official record
Conditions
Obesity, Cerebrovascular Function, Immune Cells Activity
Interventions
High intensity inspiratory muscle strength training, Low intensity
Device
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Jul 22, 2026, 4:51 PM EDT
Completed Phase 2 Interventional Results available

A Safety Study of Retinal Gene Therapy for Choroideremia With Administration of BIIB111

NCT03507686
View directory record Official record
Conditions
Choroideremia
Interventions
BIIB111
Drug
Lead sponsor
Biogen
Industry
Eligibility
18 Years and older · Male only
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
4
States / cities
Miami, Florida • Boston, Massachusetts • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 22, 2024 · Synced Jul 22, 2026, 4:51 PM EDT
Terminated Not applicable Interventional Results available

Transmural Systems Transcaval Closure Device for Transcaval Access Ports During Transcatheter Aortic Valve Replacement

NCT03432494
View directory record Official record
Conditions
Aortic Stenosis
Interventions
Transcaval closure device (TCD)
Device
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
21 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Atlanta, Georgia • Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 13, 2023 · Synced Jul 22, 2026, 4:51 PM EDT
Completed No phase listed Observational

Hemodynamic Effects on Cerebral Autoregulation in Acute Stroke

NCT02056821
View directory record Official record
Conditions
Ischemic Stroke
Interventions
Not listed
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years to 90 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 3, 2017 · Synced Jul 22, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Translational Research Examining Acupuncture Treatment in Traumatic Brain Injury

NCT02623218
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Acupuncture, Sham Acupuncture
Device
Lead sponsor
AOMA Graduate School of Integrative Medicine
Other
Eligibility
18 Years to 50 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 27, 2020 · Synced Jul 22, 2026, 4:51 PM EDT