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Showing 1–24 of 46 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hypoplastic Left Heart Syndrome Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Fetal Intervention for Aortic Stenosis and Evolving Hypoplastic Left Heart Syndrome

NCT01736956
View directory record Official record
Conditions
Aortic Stenosis, Hypoplastic Left Heart Syndrome
Interventions
Fetal Aortic Valvuloplasty
Procedure
Lead sponsor
University of California, San Francisco
Other
Eligibility
16 Years and older · Female only
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 8, 2023 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Cardiac Biomarkers in Patients With Single Ventricle Physiology

NCT03678909
View directory record Official record
Conditions
Hypoplastic Left Heart, Congenital Heart Disease, Cyanotic Congenital Heart Disease, Cardiac Disease
Interventions
Norwood Palliation / DKS / Damus-Kaye-Stansel procedure
Procedure
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Up to 2 Months
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 2, 2020 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

SVRII Family Factors Study

NCT01582529
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Not listed
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 60 Years
Enrollment
187 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
10
States / cities
Los Angeles, California • Wilmington, Delaware • St. Petersburg, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2020 · Synced Jul 21, 2026, 2:19 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Fetal Aortic Valvuloplasty for Evolving Hypoplastic Left Heart Syndrome

NCT06342999
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Fetal Aortic Valvuloplasty Procedure, Emerge Monorail and Over-The-Wire PTCA Dilatation Catheter, Trek RX and Mini Trek RX Coronary Dilatation Catheter
Procedure · Device
Lead sponsor
Mauro H. Schenone
Other
Eligibility
Up to 45 Years · Female only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2036
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cerebral Anatomy, Hemodynamics and Metabolism

NCT02919956
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Magnetic Resonance Imaging, Neurodevelopmental Testing
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
3 Years and older
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 17, 2024 · Synced Jul 21, 2026, 2:19 PM EDT
Terminated No phase listed Observational

Examining Developmental Changes in Heart Contractions of Children With Congenital Heart Defects

NCT00860327
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome, Tetralogy of Fallot
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
1 Day to 1 Year
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 21, 2016 · Synced Jul 21, 2026, 2:19 PM EDT
Not yet recruiting Phase 1 Interventional

Study of Intramyocardial Injection of Ventrix Bio Extracellular Matrix (VentriGel) to Assess the Safety and Feasibility in Pediatric Patients with Hypoplastic Left Heart Syndrome (HLHS)

NCT06461676
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Ventrix Bio Extracellular Matrix
Drug
Lead sponsor
Emory University
Other
Eligibility
Up to 1 Year
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 9, 2025 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 1 Interventional Results available

Sildenafil in Single Ventricle Patients

NCT01169519
View directory record Official record
Conditions
Heart Disease
Interventions
Sildenafil by injection
Drug
Lead sponsor
Duke University
Other
Eligibility
3 Months to 120 Months
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 4, 2013 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Not applicable Interventional

Impact of Early Intervention on Maternal Stress in Mothers of Fetuses Diagnosed With Single Ventricle Physiology

NCT02462434
View directory record Official record
Conditions
Heart Defects, Congenital, Hypoplastic Left Heart Syndrome, Single Ventricle Defect, Stress, Psychological
Interventions
Early palliative care team consultation
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Family Adaptation Study Following the Diagnosis of Hypoplastic Left Heart Syndrome in a Newborn

NCT00734643
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Not listed
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
Up to 3 Years
Enrollment
213 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2019
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 28, 2020 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 1 Interventional

Safety Study of Autologous Umbilical Cord Blood Cells for Treatment of Hypoplastic Left Heart Syndrome

NCT01883076
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
autologous cell-based delivery
Biological
Lead sponsor
Timothy J Nelson, MD, PhD
Other
Eligibility
Up to 18 Months
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
6
States / cities
Los Angeles, California • Aurora, Colorado • Minneapolis, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2022 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Neurodevelopmental Outcomes in Hypoplastic Left Heart Syndrome

NCT00399555
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
29 Months to 6 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 26, 2013 · Synced Jul 21, 2026, 2:19 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Intramyocardial Injection of Autologous Umbilical Cord Blood Derived Mononuclear Cells During Surgical Repair of Hypoplastic Left Heart Syndrome

NCT03779711
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Autologous (self) mononuclear cells derived from umbilical cord blood, Stage II Surgical repair
Biological · Procedure
Lead sponsor
Timothy J Nelson, MD, PhD
Other
Eligibility
Up to 12 Months
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
8
States / cities
Birmingham, Alabama • Los Angeles, California • Aurora, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2025 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Biomarker Study for Heart Failure in Children With Single Ventricle Physiology

NCT00571233
View directory record Official record
Conditions
Tricuspid Atresia, Hypoplastic Left Heart Syndrome, Unbalanced AV Canal
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
1 Month to 6 Years
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2015
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 13, 2015 · Synced Jul 21, 2026, 2:19 PM EDT
Terminated Phase 1 Interventional

Cold Heart Study: A Randomized Pilot Trial of Surfactant Therapy

NCT04181255
View directory record Official record
Conditions
Congenital Heart Disease, Hypoplastic Left Heart Syndrome
Interventions
Curosurf, Sham
Drug
Lead sponsor
University of Michigan
Other
Eligibility
1 Day to 12 Weeks
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 12, 2023 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Evaluation of Panel Reactive Antibody in Children Following Stage I Palliation for Hypoplastic Left Heart Syndrome

NCT01135485
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
8 Years to 18 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 1, 2017 · Synced Jul 21, 2026, 2:19 PM EDT
Withdrawn No phase listed Observational

Sleep Disordered Breathing in Children With Single Ventricle Physiology

NCT00156455
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome, Obstructive Sleep Apnea Syndrome, Single Ventricle Physiology
Interventions
Not listed
Lead sponsor
University of Rochester
Other
Eligibility
1 Month to 2 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Near-infrared Spectroscopy (NIRS) Neurodevelopmental Outcomes

NCT00464100
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Not listed
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
4 Years to 5 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2013
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 14, 2019 · Synced Jul 21, 2026, 2:19 PM EDT
Terminated Phase 1 Interventional

Allogeneic hMSC Injection in Patients With Hypoplastic Left Heart Syndrome

NCT02398604
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Allo-hMSCs, Placebo
Drug
Lead sponsor
Longeveron Inc.
Industry
Eligibility
Up to 30 Days
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 18, 2021 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Genetic Determinants of Congenital Heart Disease Outcomes

NCT01656941
View directory record Official record
Conditions
Congenital Heart Disease, Hypoplastic Left Heart Syndrome, Hypoplastic Right Heart Syndrome, d-Transposition of the Great Arteries
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
Up to 30 Days
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
4
States / cities
Atlanta, Georgia • Ann Arbor, Michigan • Charleston, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 9, 2021 · Synced Jul 21, 2026, 2:19 PM EDT
Terminated Phase 1 Interventional

Safety and Feasibility Study of Umbilical Cord Blood Cells for Infants With Hypoplastic Left Heart Syndrome

NCT01445041
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
Autologous Umbilical Cord Blood
Biological
Lead sponsor
Michael Cotten
Other
Eligibility
Up to 2 Days
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 1 Interventional Results available

The CHILD Trial: Hypoplastic Left Heart Syndrome Study.

NCT03406884
View directory record Official record
Conditions
Hypoplastic Left Heart Syndrome
Interventions
c-kit+ cells
Biological
Lead sponsor
Joshua M Hare
Other
Eligibility
1 Day to 21 Days
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
4
States / cities
Atlanta, Georgia • Chicago, Illinois • Baltimore, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

3D Modalities for Medical Student Education of Congenital Heart Disease

NCT07295730
View directory record Official record
Conditions
Tetralogy of Fallot (TOF), Hypoplastic Left Heart Syndrome (HLHS)
Interventions
3D-printed heart models and augmented reality
Other
Lead sponsor
Case Western Reserve University
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced Jul 21, 2026, 2:19 PM EDT
Recruiting No phase listed Observational

Effect of Fetal Aortic Valvuloplasty on Outcomes

NCT05386173
View directory record Official record
Conditions
Congenital Heart Disease, Aortic Valve Stenosis, Fetal Cardiac Disorder, Hypoplastic Left Heart Syndrome
Interventions
Fetal aortic balloon dilatation
Procedure
Lead sponsor
Queen Silvia Children's Hospital, Gothenburg, Sweden
Other
Eligibility
23 Weeks to 31 Weeks
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2029
U.S. locations
2
States / cities
San Francisco, California • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 20, 2025 · Synced Jul 21, 2026, 2:19 PM EDT