The Pulmonary Hypertension Association (PHA) provides this tool to help participants learn more about research ongoing in PH. Use the filters below to narrow the search results to fit your personal needs. Each listing describes current research, who qualifies to participate, and whom to contact for information.

No personal information can be collected through this tool. The information presented on the PHA Clinical Trials page has been obtained directly from, a service of the U.S. National Institutes of Health (NIH). PHA recommends that you use the information in this resource to begin a conversation with your PH specialist about whether or not participating in research is right for you.

Search for PH clinical trials here:

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For more information, please contact PHA at and refer to the terms of service below.

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The content provided on clinical trials is for informational purposes only and is not a substitute for medical consultation with your healthcare provider. We do not recommend or endorse any specific study and you are advised to discuss the information shown with your healthcare provider. While we believe the information presented on this website to be accurate at the time of writing, we do not guarantee that its contents are correct, complete, or applicable to any particular individual situation. We strongly encourage individuals to seek out appropriate medical advice and treatment from their physicians. We cannot guarantee the availability of any clinical trial listed and will not be responsible if you are considered ineligible to participate in a given clinical trial. We are also not liable for any injury arising as a result of participation in a clinical trial or study.