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ClinicalTrials.gov 1,339 recruiting now official registry

Clinical trials in Missouri

Every US clinical trial with a study site in Missouri - recruiting status, phase mix, and the conditions and sponsors driving research in the state, from the NIH ClinicalTrials.gov registry.

Missouri has 4,116 registered US clinical trials with a study site in-state, 1,339 of them currently recruiting (above the 14% national average by 19 percentage points). 857 of these trials are in Phase 3 (late-stage) and 1,044 in Phase 2. The most frequently studied condition in Missouri is Breast Cancer, with 80 linked trials.

The state picture

Missouri has 4,116 registered clinical trials with sites in-state, 1,339 of them open to new participants right now, about 33% of the state's indexed portfolio.

1,339
recruiting participants now
33%
of in-state trials open to enrollment
857
in Phase 3 (late-stage)
80
top condition: Breast Cancer

Counts include every study with at least one recorded site in the state, from the public ClinicalTrials.gov registry. Reference information, not medical advice.

Phase 21044Phase 3857NA778Phase 1717Phase 4153Early Phase 136
Completed1864Recruiting1339Active913
Treemap Treemap of 15 categories, sized proportional to value. Breast Cancer - 80 Breast Cancer 80 Obesity - 71 Obesity 71 Non-Small Cell Lung Cancer - 64 Non-Small Cell … 64 HIV Infections - 58 HIV Infections 58 Multiple Myeloma - 49 Multiple Mye… 49 Asthma - 48 Asthma 48 Colorectal Cancer - 40 Colorectal Cancer 40 Prostate Cancer - 40 Prostate Cancer 40 Heart Failure - 36 Heart Failu… 36 Healthy - 34 Healthy 34 Cystic Fibrosis - 33 Cystic Fibros… 33 Myelodysplastic Syndromes - 33 Myelodysplast… 33 Advanced Solid Tumor - 33 Advanced Solid Tumor 33 Schizophrenia - 32 Schizophrenia 32 Endometrial Cancer - 30 Endometrial Cancer 30

Reading the Clinical Trial Landscape in Missouri

ClinicalTrials.gov lists 4,116 clinical trials with study locations in Missouri. Of those, 1,339 are currently recruiting, roughly 33% of the state's indexed portfolio, above the 14% national average by 19 percentage points, which is a rough but useful proxy for how much research activity is presently open to new participants relative to the rest of the country. The largest status group for Missouri is "Completed" with 1,864 entries, which sets the overall tone of the registry footprint in this geography. These counts are drawn from the public registry maintained by the National Library of Medicine and are reflected here exactly as indexed; they include every study with at least one site recorded in Missouri, regardless of sponsor type.

The phase distribution shown above breaks the same trials down by where they sit along the investigational pathway. For Missouri, Phase 3 accounts for 857 indexed trials and Phase 2 accounts for 1,044. Phase 2 studies typically evaluate early efficacy and refine dosing, while Phase 3 studies run larger and are usually closer to regulatory submission, so a state with a strong Phase 3 count often reflects established research centers working on late-stage programs, while a heavier Phase 1 and Phase 2 weighting can indicate concentrations of academic medical centers and early-stage investigator networks. Phase markers come directly from the sponsor-reported registry field and are not transformed on this site.

The most frequently indexed condition for Missouri is Breast Cancer with 80 linked trials, across 15 top condition areas surfaced above. On the sponsor side, Washington University School of Medicine leads with 491 studies tied to Missouri, with 9 additional organizations in the visible top list. Together, these breakdowns give a quick sense of which conditions and organizations drive trial activity in Missouri, but they do not describe treatment availability, local clinic capacity, or the chance of being matched to any specific study. All numbers come from ClinicalTrials.gov and should be used for reference only, verify current status and eligibility directly on ClinicalTrials.gov, and always discuss clinical trial participation with a qualified healthcare provider before making any decision.

What this means if you're in Missouri

1,339 trials in Missouri are open to new participants, here's how to act on that.

A trial is counted here when it lists at least one in-state site; always confirm eligibility and current status on ClinicalTrials.gov.

States With a Similar Recruiting Share

The closest states nationwide to Missouri's 33% of trials currently recruiting.

Source: ClinicalTrials.gov, the US trial registry maintained by the National Library of Medicine, part of the NIH. See our methodology for how this data is sourced and computed.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This page aggregates every registered clinical trial within this state, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.