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ClinicalTrials.gov public records Last synced Jul 21, 2026, 10:18 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: Twin Diseases Clear all
Recruiting No phase listed Observational

Fetal Electrophysiologic Abnormalities in High-Risk Pregnancies Associated With Fetal Demise

NCT03775954
View directory record Official record
Conditions
High Risk Pregnancy, Congenital Heart Disease, Fetal Hydrops, Twin Monochorionic Monoamniotic Placenta, Gastroschisis, Fetal Demise, Stillbirth, Fetal Arrhythmia, Long QT Syndrome, Intrauterine Fetal Death, Sudden Infant Death, Pregnancy Loss, Twin Twin Transfusion Syndrome, Birth Defect, Fetal Cardiac Anomaly, Fetal Cardiac Disorder, Fetal Death, Brugada Syndrome, Fetal Tachycardia
Interventions
Fetal Magnetocardiogram and Neonatal Electrocardiogram, Substudy only: Maternal/Infant Pharmacogenomic assessment postnatally
Diagnostic Test · Genetic
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Jul 21, 2026, 10:18 PM EDT
Recruiting Not applicable Interventional

The Effect of Uterine Entry In Fetoscopic Laser Photocoagulation for Twin-To-Twin Transfusion Syndrome

NCT06829901
View directory record Official record
Conditions
Twin to Twin Transfusion
Interventions
Fetoscopic Laser Photocoagulation
Procedure
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
216 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Jul 21, 2026, 10:18 PM EDT
Completed Phase 1 Interventional

Twins Study of Gene Therapy for HIV Infection

NCT00001535
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome, HIV Infection, Kaposi's Sarcoma
Interventions
Syngeneic Lymphocytes (CD4+) Cultured with OKT3 (Ortho) and Interleukin-2 (Chiro
Drug
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
Not listed
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 7, 2008 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational

Study of Families With Twins or Siblings Discordant for Rheumatic Disorders

NCT00055055
View directory record Official record
Conditions
Rheumatoid Arthritis, Systemic Lupus Erythematosus, Idiopathic Inflammatory Myopathies
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
2 Years and older
Enrollment
1,056 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
3
States / cities
Bethesda, Maryland • Research Triangle Park, North Carolina • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The NICHD Fetal Growth Study: Twin Gestations

NCT01369940
View directory record Official record
Conditions
Fetal Growth Restriction, Growth Discordancy
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 45 Years · Female only
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
9
States / cities
Birmingham, Alabama • Long Beach, California • Orange, California + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2017 · Synced Jul 21, 2026, 10:18 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

B-cell Immunity to Influenza (SLVP017)- Year 1, 2009

NCT02133781
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® 2009-2010 Formula, FluMist® 2009-2010 Formula
Biological
Lead sponsor
Stanford University
Other
Eligibility
8 Years to 100 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jun 5, 2018 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational

PCOS Twin Study - Environmental Factors in the Development of Polycystic Ovary Syndrome, Phase 2

NCT00444288
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Genetic Influences Between Cognitive Function and BMI

NCT03116334
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Baylor College of Medicine
Other
Eligibility
7 Years to 15 Years
Enrollment
869 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Understanding and Diagnosing Allergic Disease in Twins

NCT01613885
View directory record Official record
Conditions
Allergies
Interventions
No Intervention
Other
Lead sponsor
Stanford University
Other
Eligibility
0 Years to 80 Years
Enrollment
340 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2019
U.S. locations
2
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 16, 2021 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational

Renal Artery Dopplers in Twin Twin Transfusion Syndrome

NCT03449823
View directory record Official record
Conditions
Twin Twin Transfusion Syndrome
Interventions
Doppler ultrasound of fetal renal artery
Diagnostic Test
Lead sponsor
Columbia University
Other
Eligibility
Female only
Enrollment
24 participants
Timeline
2016 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 17, 2018 · Synced Jul 21, 2026, 10:18 PM EDT
Withdrawn Not applicable Interventional

Safety and Efficacy of Fetoscopes Used in Fetoscopic Selective Laser Photocoagulation

NCT06022510
View directory record Official record
Conditions
Twin Monochorionic Diamniotic Placenta
Interventions
Fetoscopy Sets for Anterior and Posterior Placentas
Device
Lead sponsor
Michael A Belfort
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational

Selective Laser Photocoagulation of Communicating Vessels in Twin-Twin Transfusion Syndrome

NCT01622049
View directory record Official record
Conditions
Twin Twin Transfusion Syndrome
Interventions
Selective Laser Photocoagulation of Communicating Vessels
Device
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Mar 13, 2013 · Synced Jul 21, 2026, 10:18 PM EDT
Not listed Not applicable Interventional

Cerclage for Twins With Short Cervical Length ≤ 15mm

NCT03340688
View directory record Official record
Conditions
Twin Pregnancy With Antenatal Problem, Preterm Birth, Short Cervix
Interventions
Cervical cerclage
Procedure
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Philadelphia, Pennsylvania • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 26, 2020 · Synced Jul 21, 2026, 10:18 PM EDT
Terminated Phase 2 Interventional Results available

Internal Radiation Therapy After Lumpectomy in Treating Women With Ductal Carcinoma in Situ

NCT00290654
View directory record Official record
Conditions
Breast Cancer
Interventions
Tamoxifen, Lumpectomy, brachytherapy
Drug · Procedure · Radiation
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years and older · Female only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2013
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 27, 2017 · Synced Jul 21, 2026, 10:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sequential vs. Standard Laser Treatment of Twin-twin Transfusion Syndrome

NCT02122328
View directory record Official record
Conditions
Twin Twin Transfusion Syndrome
Interventions
Sequential laser photocoagulation of communicating vessels., Selective laser photocoagulation of communicating vessels
Procedure
Lead sponsor
University of Southern California
Other
Eligibility
16 Years to 55 Years · Female only
Enrollment
642 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 19, 2025 · Synced Jul 21, 2026, 10:18 PM EDT
Completed Not applicable Interventional

Randomized Controlled Trial Comparing a Conservative Management and Laser Surgery

NCT01220011
View directory record Official record
Conditions
Blood and Blood Disorders, Anemia, Neonatal, Hematologic Disease, Infant, Newborn, Diseases
Interventions
Fetoscopic laser surgery
Procedure
Lead sponsor
Assistance Publique - Hôpitaux de Paris
Other
Eligibility
18 Years and older · Female only
Enrollment
179 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
8
States / cities
Aurora, Colorado • Baltimore, Maryland • Cincinnati, Ohio + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational

Brain Imaging in Children With AD/HD

NCT00008892
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity, Healthy
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
6 Years to 21 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 21, 2026, 10:18 PM EDT
Active, not recruiting No phase listed Observational

Database of Monochorionic Pregnancies

NCT05543499
View directory record Official record
Conditions
Monochorionic Diamniotic Placenta, Monochorial Monoamniotic Placenta, Twin; Complicating Pregnancy, Twin to Twin Transfusion Syndrome, Twin Reversal Arterial Perfusion Syndrome
Interventions
Not listed
Lead sponsor
University of Miami
Other
Eligibility
Not listed
Enrollment
1,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Jul 21, 2026, 10:18 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Trial of Progesterone in Twins and Triplets to Prevent Preterm Birth (STTARS)

NCT00099164
View directory record Official record
Conditions
Preterm Birth, Pregnancy, Multifetal
Interventions
17 alpha-hydroxyprogesterone caproate (17P)
Drug
Lead sponsor
The George Washington University Biostatistics Center
Other
Eligibility
Female only
Enrollment
795 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
14
States / cities
Birmingham, Alabama • Chicago, Illinois • Detroit, Michigan + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 20, 2019 · Synced Jul 21, 2026, 10:18 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

The Effects of Attenuated Versus Inactivated Flu Vaccine in Twin Sets

NCT03898986
View directory record Official record
Conditions
Influenza
Interventions
Live attenuated influenza vaccine (LAIV4), Inactivated Influenza Vaccine (IIV4)
Biological
Lead sponsor
Stanford University
Other
Eligibility
2 Years to 20 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 5, 2025 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational

Environmental Factors in the Development of Polycystic Ovary Syndrome

NCT00341731
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2000
U.S. locations
2
States / cities
Research Triangle Park, North Carolina • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 30, 2009 · Synced Jul 21, 2026, 10:18 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Heart Rhythm Twins Study

NCT05866731
View directory record Official record
Conditions
Premature Atrial Complex, Premature Ventricular Contraction
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Jul 21, 2026, 10:18 PM EDT
Completed Phase 4 Interventional Results available

Prophylactic Methylergonovine for Twin Cesarean

NCT05772156
View directory record Official record
Conditions
Twin; Complicating Pregnancy, Postpartum Hemorrhage
Interventions
Methylergonovine, Placebo
Drug
Lead sponsor
Columbia University
Other
Eligibility
Up to 65 Years · Female only
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 12, 2025 · Synced Jul 21, 2026, 10:18 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Culturally-relevant Micronutrient-dense Plant-rich (mNDPR) Dietary Intervention for Native Americans

NCT04755062
View directory record Official record
Conditions
Obesity, Blood Glucose, High
Interventions
Micronutrient-dense plant-rich Intervention
Behavioral
Lead sponsor
Northern Arizona University
Other
Eligibility
18 Years and older
Enrollment
146 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Flagstaff, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 13, 2024 · Synced Jul 21, 2026, 10:18 PM EDT