Also on Trial Friend:Pulmonary Arterial Hypertension pageMatch Me
All 88 Pulmonary Arterial Hypertension trials and their US sites
Enter your ZIP code above to sort them by how far their nearest open site is from you.
- Pulmonary Hypertension Association RegistryMost sites in California, Virginia and New YorkRecruitingAges 0+Pulmonary Hypertension Association52US sites
28 states - Open-label Extension Study of Seralutinib in Adult Subjects With PAH (PROSERA-EXT)Most sites in California, Georgia and PennsylvaniaRecruitingPhase 3Ages 18-75Gossamer Bio USA29US sites
16 states - A Study to Learn About the Treatment LTP001 in Healthy Participants (Part A) and in Participants With PAH (Part B)Most sites in Texas, California and FloridaRecruitingPhase 1/2Ages 18-100Novartis Pharmaceuticals20US sites
15 states - An Adaptive Program of IKT-001 in Pulmonary Arterial Hypertension (PAH)Most sites in California, New York and ArizonaRecruitingPhase 3Ages 18-75Inhibikase Therapeutics15US sites
12 states - Pediatric Pulmonary Hypertension Network (PPHNet) Informatics RegistryMost sites in California, New York and ColoradoRecruitingAges 1 Day-21New York Medical College13US sites
11 states - A Study of ROC-101 in Patients With Pulmonary Arterial Hypertension (PAH) and Pulmonary Hypertension Associated With Interstitial Lung Disease (ILD-PH) (ROCSTAR STUDY)Most sites in Arizona, California and ColoradoRecruitingPhase 2Ages 18-80AllRock Bio11US sites
11 states - A Study to Evaluate the Efficacy and Safety of Once Daily Treprostinil Palmitil Inhalation Powder (TPIP) in Participants With Pulmonary Arterial Hypertension (PAH)Most sites in New York, California and KansasRecruitingPhase 3Ages 18-75Insmed Incorporated11US sites
6 states - Study to Evaluate Sotatercept (MK-7962) in Children With Pulmonary Arterial Hypertension (PAH) (MK-7962-008)Most sites in California, Colorado and District of ColumbiaRecruitingPhase 2Ages 1-17Merck Sharp & Dohme9US sites
7 states - Treatment of Pulmonary Arterial Hypertension Using the Aria CV Pulmonary Hypertension SystemMost sites in Minnesota, New York and CaliforniaRecruitingAges 18+Aria CV9US sites
7 states - Pharmacokinetics, Pharmacodynamics, and Safety Profile of Understudied Drugs Administered to Children Per Standard of Care (POPS)Most sites in California, North Carolina and OhioRecruitingAges 0-20Duke University4US sites
4 states - Study of REGN13335 in Adult Participants With Pulmonary Arterial Hypertension (PAH)Most sites in Colorado, Massachusetts and NebraskaRecruitingPhase 2Ages 18+Regeneron Pharmaceuticals4US sites
4 states - A Study of HS235 for Treatment of Pulmonary Arterial Hypertension (PAH) in AdultsMost sites in Florida, Massachusetts and Rhode IslandRecruitingPhase 1/2Ages 18+35Pharma Inc., a GSK company3US sites
3 states - Empagliflozin to Improve Right Ventricular Function in Pulmonary Arterial HypertensionMost sites in Maryland, Ohio and TennesseeRecruitingPhase 2Ages 18+Gustavo A Heresi, MD, MS3US sites
3 states - : Vascular Function in Health and DiseaseOnly in UtahRecruitingPhase 1Ages 18+D. Walter Wray1US site
- 129 Xenon Imaging in Patients Treated With SotaterceptOnly in North CarolinaRecruitingPhase 2Ages 18-75Bastiaan Driehuys1US site
- 129 Xenon MRI as a Biomarker for Diagnosis and Response to Therapy in Pulmonary Arterial Hypertension (PAH)Only in North CarolinaRecruitingPhase 2Ages 18-75Bastiaan Driehuys1US site
- A Prospective Longitudinal Observational Cohort Study of Pregnant Women Residing at High Altitude in BoliviaOnly in MassachusettsRecruitingAges 18-45Massachusetts General Hospital1US site
- A Study Evaluating the Safety and Tolerability of Artesunate in Patients With Pulmonary Arterial HypertensionOnly in CaliforniaRecruitingPhase 1Ages 18-60Joseph C. Wu1US site
- A Study of Inhaled Treprostinil (LIQ861) in Adults With Pulmonary Arterial Hypertension Transitioning From Oral SelexipagOnly in GeorgiaRecruitingPhase 4Ages 18-80Liquidia Technologies1US site
- Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia (FETO)Only in FloridaRecruitingAges 18-50Rodrigo Ruano1US site
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Who runs the Pulmonary Arterial Hypertension trials in the US, and what stage they are in
Of the 40 Pulmonary Arterial Hypertension trials with a US site, 6 are in Phase 3, the last stage before a company can ask the FDA for approval. Earlier Phase 1 or 2 tests of safety and dosing make up 16 of them. One is a Phase 4 study of an already approved treatment. The remaining 17 have no drug phase, such as studies that follow people over time or test a device or a way of giving care. Companies run 10 of them, and universities, hospitals, foundations and government groups run 30. The sponsors with the most are Vanderbilt University Medical Center (5), Bastiaan Driehuys (4) and University of Washington (2). The most recently listed one first appeared on ClinicalTrials.gov on November 4, 2026.
Pulmonary Arterial Hypertension trials in the US, state by state
Of the 40 Pulmonary Arterial Hypertension trials with a US site, 7 accept children under 18. Their open sites are in 29 states and Washington, DC, most often Tennessee, California and Ohio. A trial counts once in each state where it has an open site, and some trials accept both children and adults.
Show the other 24 states
US hospitals running the most Pulmonary Arterial Hypertension trials
Centers that run trials for a rare condition often see more people with it than most clinics do, so this list can also help you find doctors who know Pulmonary Arterial Hypertension.
- Vanderbilt University Medical CenterNashville, Tennessee9 trials
- Duke University Medical CenterDurham, North Carolina5 trials
- UT Southwestern Medical CenterDallas, Texas4 trials
- Stanford UniversityStanford, California3 trials
- Tufts Medical CenterBoston, Massachusetts3 trials
- University of Kansas Medical CenterKansas City, Kansas3 trials
- University of WashingtonSeattle, Washington3 trials
- Allegheny General HospitalPittsburgh, Pennsylvania2 trials
- Children's Hospital ColoradoAurora, Colorado2 trials
- Duke UniversityDurham, North Carolina2 trials
Help getting to a Pulmonary Arterial Hypertension trial far from home
Ask the study team whether the trial pays back travel, parking and hotel costs, because many sponsors do. The FDA's guidance on paying research volunteers says paying back these costs does not count as pressuring someone to join.
These nonprofits also help patients reach care, and each one sets its own rules.
- Mercy Medical Angels
- Pays for gas cards, ground rides and airline tickets anywhere in the US, and it lists clinical trials as a reason to travel. Household income at or below 300% of the federal poverty guidelines, and usually a trip of 50 miles or more each way.
- Air Charity Network
- Volunteer pilots in all 50 states fly patients for free in small private planes, and members also fly people taking part in clinical trials. You must be able to walk and sit upright for the flight, show financial need and have a backup plan if weather cancels it.
- Ronald McDonald House
- Gives families a room near the hospital while a child gets care, through 394 House programs around the world. Families of a sick child, with rules set by each local chapter.
- Healthcare Hospitality Network
- Keeps a map of hospitality houses near hospitals, and most member houses charge little or nothing to patients and families. Each house sets its own rules, so check with the house near your study site.
Program details were checked on each program's website on October 24, 2026.
Questions about finding a Pulmonary Arterial Hypertension trial near you
Are there Pulmonary Arterial Hypertension clinical trials near me?
As of November 13, 2026, 88 Pulmonary Arterial Hypertension clinical trials are recruiting now and 42 are not yet recruiting. In the US, 40 of them have at least 1 open site, across 33 states and Washington, DC. Enter your ZIP code on this page to rank every one of them by the distance to its closest open site, with the sites shown on a map.
Which states have Pulmonary Arterial Hypertension clinical trial sites?
Recruiting Pulmonary Arterial Hypertension trials list open sites in 33 states and Washington, DC. California, Ohio and Pennsylvania have the most, and the table on this page lists every state.
Are there Pulmonary Arterial Hypertension trials for children near me?
Of the 40 Pulmonary Arterial Hypertension trials with a US site, 7 accept children under 18. Their open sites are in 29 states and Washington, DC, most often Tennessee, California and Ohio. Each trial sets its own age limits, so check the ages listed on a trial before you contact it.
Who pays for travel to a Pulmonary Arterial Hypertension clinical trial?
Many trial sponsors pay back travel, parking and hotel costs, so ask the study team before you rule out a far-away site. The FDA's guidance says paying back these costs does not count as pressuring someone to join. Charities such as Mercy Medical Angels and Air Charity Network can also help with rides and flights.
What if there is no Pulmonary Arterial Hypertension trial near me?
Some trials send staff to your home or use a local lab, so fewer visits happen at the study site. You can also sign up on this page to get an email when a Pulmonary Arterial Hypertension trial opens a new site or changes status.
How is the distance to a trial site measured?
Distances are straight-line miles from the center of your ZIP code to each study site's listed location, not driving distance. Your browser looks up the ZIP code's coordinates with a free map service, Zippopotam.us, and the ZIP code is never sent to or stored by Trial Friend.
FDA-approved for Pulmonary Arterial Hypertension: Adcirca (tadalafil), Adempas (riociguat), Flolan (epoprostenol), Letairis (ambrisentan), Opsumit (macitentan), Revatio (sildenafil), Tracleer (bosentan), Tyvaso (treprostinil) and 5 more on the disease page.
Clinical trials near you for related conditions
Source: ClinicalTrials.gov, trials with status Recruiting or Not yet recruiting. Refreshed every 6 hours; counts as of November 13, 2026. Sites that ClinicalTrials.gov lists as closed or withdrawn are left out. Children means the trial's age group includes people under 18.