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ClinicalTrials.gov 913 recruiting now official registry

Clinical trials in Washington

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

Washington has 2,795 registered US clinical trials with a study site in-state, 913 of them currently recruiting (above the 14% national average by 19 percentage points). 381 of these trials are in Phase 3 (late-stage) and 677 in Phase 2. The most frequently studied condition in Washington is Breast Cancer, with 56 linked trials.

The state picture

Washington has 2,795 registered clinical trials with sites in-state, 913 of them open to new participants right now, about 33% of the state's indexed portfolio.

913
recruiting participants now
33%
of in-state trials open to enrollment
381
in Phase 3 (late-stage)
56
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.

NA694Phase 2677Phase 1590Phase 3381Phase 490Early Phase 124
Completed1299Recruiting913Active583
Treemap Treemap of 15 categories, sized proportional to value. Breast Cancer - 56 Breast Cancer 56 HIV Infections - 50 HIV Infections 50 Non-Small Cell Lung Cancer - 46 Non-Small Cell … 46 Prostate Cancer - 35 Prostate Cancer 35 Multiple Myeloma - 34 Multiple Mye… 34 Colorectal Cancer - 33 Colorectal C… 33 Ovarian Cancer - 28 Ovarian Cancer 28 Acute Myeloid Leukemia - 26 Acute Myeloid Leuke… 26 Obesity - 26 Obesity 26 Depression - 25 Depression 25 Cancer - 23 Cancer 23 Chronic Lymphocytic Leukemia - 22 Chronic Lymp… 22 Chronic Pain - 21 Chronic Pain 21 Lymphoma - 20 Lymphoma 20 Multiple Sclerosis - 19 Multiple Sclerosis 19

Reading the Clinical Trial Landscape in Washington

ClinicalTrials.gov lists 2,795 clinical trials with study locations in Washington. Of those, 913 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 Washington is "Completed" with 1,299 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 Washington, regardless of sponsor type.

The phase distribution shown above breaks the same trials down by where they sit along the investigational pathway. For Washington, Phase 3 accounts for 381 indexed trials and Phase 2 accounts for 677. 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 Washington is Breast Cancer with 56 linked trials, across 15 top condition areas surfaced above. On the sponsor side, University of Washington leads with 375 studies tied to Washington, 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 Washington, 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 Washington

913 trials in Washington 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 Washington'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.