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ClinicalTrials.gov public records Last synced Oct 15, 2026, 8:21 AM EDT

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Showing 409–432 of 449 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Heritable Pulmonary Arterial Hypertension Clear all
Recruiting No phase listed Observational Accepts healthy volunteers

A Prospective Longitudinal Observational Cohort Study of Pregnant Women Residing at High Altitude in Bolivia

NCT07312227
View directory record Official record
Conditions
Hypertensive Disorder of Pregnancy, Pulmonary Arterial Hypertension, Intrauterine Growth Restriction
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Phase 2 Interventional Results available

A Study of Rodatristat Ethyl in Patients With Pulmonary Arterial Hypertension (Core OLE)

NCT04712669
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
rodatristat ethyl 300 mg tablet BID, rodatristat ethyl 600 mg BID, Placebo
Drug
Lead sponsor
Altavant Sciences GmbH
Industry
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
28
States / cities
Phoenix, Arizona • La Jolla, California • Los Angeles, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced Oct 15, 2026, 8:21 AM EDT
Terminated Phase 2 Interventional Results available

Sildenafil Therapy for Pulmonary Hypertension and Sickle Cell Disease

NCT00492531
View directory record Official record
Conditions
Sickle Cell Disease, Pulmonary Hypertension
Interventions
Sildenafil, Placebo
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
12 Years to 70 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
8
States / cities
Oakland, California • Denver, Colorado • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2016 · Synced Oct 15, 2026, 8:21 AM EDT
Completed No phase listed Observational

Thalassemia (Cooley's Anemia) Clinical Research Network (TCRN)

NCT00000623
View directory record Official record
Conditions
Anemia, Cooley's, Beta-Thalassemia, Hematologic Diseases, Thalassemia, Osteoporosis, Iron Overload, Hypertension, Pulmonary
Interventions
Deferoxamine, Deferiprone, Arginine, Sildenafil, Decitabine
Drug
Lead sponsor
Carelon Research
Other
Eligibility
1 Year to 75 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2006
U.S. locations
4
States / cities
Oakland, California • Boston, Massachusetts • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2014 · Synced Oct 15, 2026, 8:21 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Obstructive Sleep Apnea (OSA) in Pulmonary Arterial Hypertension (PAH)

NCT01835080
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Obstructive Sleep Apnea
Interventions
Not listed
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 16, 2020 · Synced Oct 15, 2026, 8:21 AM EDT
Terminated Phase 2 Interventional

Long-term Study of AIR001 in Subjects With WHO Group 1 Pulmonary Arterial Hypertension Who Completed AIR001-CS05

NCT01725269
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
AIR001
Drug
Lead sponsor
Aires Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
17
States / cities
La Jolla, California • Torrance, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2014 · Synced Oct 15, 2026, 8:21 AM EDT
Withdrawn Not applicable Interventional

Body Volume Regulation in Pulmonary Arterial Hypertension With Right Ventricular Failure

NCT00811486
View directory record Official record
Conditions
Right Heart Failure, Pulmonary Hypertension
Interventions
Spironolactone and conivaptan
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 28, 2013 · Synced Oct 15, 2026, 8:21 AM EDT
Completed No phase listed Observational Results available

Patient Global Impression Questions for Activity-Induced Symptoms in Participants With PAH

NCT03888365
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil, Non-Treprostinil PAH Medications
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
43 participants
Timeline
2019
U.S. locations
10
States / cities
Birmingham, Alabama • Beverly Hills, California • Santa Barbara, California + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 16, 2021 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Phase 2 Interventional Results available

Vardenafil Inhaled for Pulmonary Arterial Hypertension PRN Phase 2B Study

NCT04266197
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Drug: RT234 - vardenafil inhalation powder; Device: Axially Oscillating Sphere dry powder inhaler (AOS DPI)
Combination Product
Lead sponsor
Respira Therapeutics, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
26
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 22 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Phase 3 Interventional Results available

Ranolazine and Pulmonary Hypertension

NCT01174173
View directory record Official record
Conditions
Angina, Pulmonary Arterial Hypertension
Interventions
Ranolazine
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 11, 2018 · Synced Oct 15, 2026, 8:21 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Hormonal, Metabolic, and Signaling Interactions in PAH

NCT01884051
View directory record Official record
Conditions
Idiopathic Pulmonary Arterial Hypertension, Heritable Pulmonary Arterial Hypertension, Scleroderma Associated Pulmonary Arterial Hypertension, Appetite Suppressant Associate PAH
Interventions
Not listed
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
Up to 90 Years
Enrollment
1,899 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2032
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 15, 2026, 8:21 AM EDT
Recruiting Phase 2 Interventional

Pulmonary Hypertension SOLAR

NCT04778046
View directory record Official record
Conditions
Interstitial Lung Disease, COPD, Pulmonary Arterial Hypertension
Interventions
Hyperpolarized 129Xe
Drug
Lead sponsor
Bastiaan Driehuys
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Not applicable Interventional

The Six Minute Walk Test: Influence of Instruction on Results

NCT01789996
View directory record Official record
Conditions
Interstitial Lung Disease
Interventions
alternative six minute walk test, Standard six minute walk test
Procedure
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years to 90 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 16, 2020 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Not applicable Interventional

Biomarkers in the Diagnosis and Assessment of Pulmonary Arterial Hypertension (PAH)

NCT00566423
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Blood draw
Other
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Jun 23, 2011 · Synced Oct 15, 2026, 8:21 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Cardiovascular Complications of Sickle Cell Disease

NCT01044901
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
MRI, Transthoracic Echocardiography, tonometry, EKG
Procedure
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 23, 2022 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Supine or Prone Position After Caesarean Birth

NCT01310153
View directory record Official record
Conditions
Respiratory Distress, Transient Tachypnea of the Newborn, Delayed Transition of the Newborn, Persistent Pulmonary Hypertension
Interventions
prone positioning, Supine
Procedure
Lead sponsor
Montefiore Medical Center
Other
Eligibility
Female only
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 31, 2018 · Synced Oct 15, 2026, 8:21 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Measurements and Characterization of Doppler Signals From the Right Chest in Pediatric and Adult Patients

NCT01913457
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Ultrasound Doppler
Radiation
Lead sponsor
Echosense Ltd.
Industry
Eligibility
Not listed
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2021
U.S. locations
2
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 23, 2022 · Synced Oct 15, 2026, 8:21 AM EDT
Active, not recruiting Not applicable Interventional

Preductal Oxygen Saturation Target in Term and Late Preterm Neonates With Hypoxemic Respiratory Failure or Pulmonary Hypertension

NCT04938167
View directory record Official record
Conditions
Persistent Pulmonary Hypertension of the Newborn, Hypoxemic Respiratory Failure
Interventions
95% - 99% SpO2 target
Other
Lead sponsor
University of California, Davis
Other
Eligibility
0 Days to 28 Days
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Phase 2 Interventional

A Study to Evaluate the Efficacy, Safety and Pharmacokinetics of Treprostinil Palmitil Inhalation Powder in Participants With Pulmonary Arterial Hypertension

NCT05147805
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Palmitil, Placebo
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 75 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
21
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Tucson, Arizona + 16 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Phase 3 Interventional Results available

Pharmacokinetic Effects of QTI571 on Sildenafil and Bosentan in Pulmonary Arterial Hypertension Participants

NCT01392469
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Imatinib, Sildenafil, Bosentan
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
3
States / cities
Tampa, Florida • Weston, Florida • Mineola, New York
Source: ClinicalTrials.gov public record
Updated Jun 21, 2021 · Synced Oct 15, 2026, 8:21 AM EDT
Terminated Phase 3 Interventional Results available

Study Looking at Combination Therapy (Sitaxsentan+Sildenafil) Vs. Monotherapy (Sitaxsentan Alone) SR-PAAS -Sitaxsentan Efficacy And Safety Trial With A Randomized Prospective Assessment Of Adding Sildenafil

NCT00796666
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Pulmonary Hypertension
Interventions
Sitaxsentan, Sitaxsentan and Sildenafil
Drug
Lead sponsor
Pfizer
Industry
Eligibility
16 Years to 80 Years
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
12
States / cities
Fountain Valley, California • Gainesville, Florida • Weston, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 24, 2015 · Synced Oct 15, 2026, 8:21 AM EDT
Completed No phase listed Observational

Evaluation of Patients With Known or Suspected Heart Disease

NCT00001313
View directory record Official record
Conditions
Peripheral Artery Disease, Coronary Disease, Diabetes and Heart Failure, Dilated Cardiomyopathy, Heart Failure, Renal Artery Stenosis, Pulmonary Hypertension
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
1992 – 2009
U.S. locations
2
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 15, 2026, 8:21 AM EDT
Completed Phase 3 Interventional Results available

Phase III Clinical Worsening Study of UT-15C in Subjects With PAH Receiving Background Oral Monotherapy

NCT01560624
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Diolamine, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
690 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
40
States / cities
Phoenix, Arizona • Tucson, Arizona • Fresno, California + 33 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2020 · Synced Oct 15, 2026, 8:21 AM EDT
Recruiting No phase listed Observational

Pulmonary Hypertension Biorepository and Registry

NCT04808596
View directory record Official record
Conditions
Pulmonary Hypertension, Pulmonary Arterial Hypertension, Pulmonary Hypertension Due to Left Heart Disease, Pulmonary Hypertension, Primary, Pulmonary Hypertension Due to Lung Diseases and Hypoxia, Pulmonary Hypertension, Primary, 4, Pulmonary Hypertension, Primary, 2, Pulmonary Hypertension, Primary, 3, Chronic Thromboembolic Pulmonary Hypertension
Interventions
Not listed
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
300 participants
Timeline
2020 – 2027
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 1, 2025 · Synced Oct 15, 2026, 8:21 AM EDT