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 31,100 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 Nov 3, 2026
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How many finished clinical trials post their results?
21.5% of the clinical trials completed in 2024 had posted results on ClinicalTrials.gov by November 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 Nov 3, 2026
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What share of clinical trials do companies run?
Companies led 19% of the clinical trials that started in 2025, against a high of 39.0% in 2002. Universities, hospitals and nonprofits lead almost all the re...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Nov 3, 2026
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Who runs clinical trials?
Universities, hospitals and nonprofits lead about 324,000 of the 465,000 clinical trials registered on ClinicalTrials.gov as of November 2026, or 70%. Drug, ...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Nov 3, 2026
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How many clinical trials are in each phase?
52% of the 465,000 clinical trials registered on ClinicalTrials.gov as of November 2026, some 240,000, have no phase: phases describe drug trials, and these ...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Nov 3, 2026
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Which diseases get the most clinical trials?
About 85,000 clinical trials registered on ClinicalTrials.gov as of November 2026 study cancer and other tumors, more than any other disease group; brain and...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Nov 3, 2026
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Which sponsors post their clinical trial results?
Of the clinical trials completed since 2008, up to two years before the data date, 45.5% of those led by companies and 60.9% of those led by the U.S. Nationa...
Source: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 · Data as of Nov 3, 2026