Pulmonary Arterial Hypertension has one of the most active rare disease trial programs, driven by drug treatment and medical device.
Recruiting
Active Trials
64 additional trials involve behavioral, dietary, diagnostic, or observational approaches.
92 trials are observational or have no phase designation.
Trials often recruit across multiple countries, so totals exceed the trial count.
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Data sourced from ClinicalTrials.gov via Kisho's automated pipeline. Trials refreshed every 4 hours for monitored diseases.
Last sync: March 15, 2026 at 5:20 PM