Search 500,000+ studies from ClinicalTrials.gov in plain language.
Common searches
500K+
Clinical trials indexed
10,000+
Rare disease pages — world's largest
Live
Trial counts, updated daily
Free
Always and forever
Most searched
Updated from search activity
Trial counts from ClinicalTrials.gov - recruiting studies only
The process
01
Type your disease name in plain language. No ICD codes, ORPHA numbers, or medical terminology required.
02
Narrow by recruiting status, trial phase, and location. See only the studies that are actually open to you.
03
Each trial page shows eligibility in plain language, site locations on a map, and direct contact details.
More than a trial list
Every disease page pulls validated clinical data from Orphanet / Orphadata and live trial counts from ClinicalTrials.gov in real time.
Live from ClinicalTrials.gov
How many studies are actively recruiting right now, total registered, and how many have expanded access - all fetched live.
Orphanet / Orphadata
Validated prevalence estimates and typical age of onset, sourced from Orphanet's epidemiological dataset covering 9,785 rare disease entities.
Orphanet / Orphadata
Top clinical features drawn from Orphanet's 115,000+ phenotypic annotations - so you know what to discuss with your doctor before applying to a trial.
Curated by disease
Disease-specific guidance on what labs, genetic tests, and functional scores trial teams typically require before you can enroll.
Patient community
The leading patient advocacy organization and natural history registry for each disease - joining a registry is one of the best steps toward trial access.
Never miss a trial
Subscribe on any disease page and receive a free email the day a new recruiting trial opens for that condition. One email, one click to unsubscribe.
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Important
RareTrial searches the public ClinicalTrials.gov database maintained by the US National Library of Medicine. Always consult your physician before pursuing any clinical trial. Trial eligibility is determined by the research team, not this tool.