Topic
Clinical trials charts
7 charts about clinical trials, each with its public source, its numbers and its date.
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How many clinical trials start each year?
About 30,800 clinical trials registered on ClinicalTrials.gov started in 2025, up from about 11,900 in 2008 and 1,900 in 2000, the registry's first year. Ear...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Sep 24, 2026
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How many finished clinical trials post their results?
21.4% of the clinical trials completed in 2024 had posted results on ClinicalTrials.gov by September 2026, down from 35.6% of those completed in 2008, when a...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Sep 24, 2026
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What share of clinical trials do companies run?
Companies led 19.1% of the clinical trials that started in 2025, down from a high of 39.0% in 2002. Universities, hospitals and nonprofits lead almost all th...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Sep 24, 2026
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Who runs clinical trials?
Universities, hospitals and nonprofits lead about 320,000 of the 461,000 clinical trials registered on ClinicalTrials.gov as of September 2026, about 7 in 10...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Sep 24, 2026
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How many clinical trials are in each phase?
About half the 461,000 clinical trials registered on ClinicalTrials.gov as of September 2026, some 237,000, have no phase: phases describe drug trials, and t...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Sep 24, 2026
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Which diseases get the most clinical trials?
About 84,000 clinical trials on ClinicalTrials.gov, roughly 1 in 5 of the 461,000 registered as of September 2026, study cancer or other tumors, more than an...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Sep 24, 2026
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Which sponsors post their clinical trial results?
Of the clinical trials completed from 2008 to 2024, 45.4% of those led by companies and 60.9% of those led by the U.S. National Institutes of Health had post...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Sep 24, 2026