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ClinicalTrials.gov 1,688 recruiting now official registry

Clinical trials in Arizona

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

Arizona has 5,607 registered US clinical trials with a study site in-state, 1,688 of them currently recruiting (above the 14% national average by 16 percentage points). 1,954 of these trials are in Phase 3 (late-stage) and 1,449 in Phase 2. The most frequently studied condition in Arizona is Breast Cancer, with 111 linked trials.

The state picture

Arizona has 5,607 registered clinical trials with sites in-state, 1,688 of them open to new participants right now, about 30% of the state's indexed portfolio.

1,688
recruiting participants now
30%
of in-state trials open to enrollment
1,954
in Phase 3 (late-stage)
111
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 31954Phase 21449NA742Phase 1696Phase 4215Early Phase 125
Completed2482Recruiting1688Active1437
Treemap Treemap of 15 categories, sized proportional to value. Breast Cancer - 111 Breast Cancer 111 Prostate Cancer - 72 Prostate Cancer 72 Non-Small Cell Lung Cancer - 72 Non-Small Cell… 72 Obesity - 71 Obesity 71 Diabetes Mellitus, Type 2 - 60 Diabetes Mel… 60 Multiple Myeloma - 60 Multiple Mye… 60 Asthma - 50 Asthma 50 Heart Failure - 50 Heart Failure 50 Cancer - 49 Cancer 49 Healthy - 46 Healthy 46 Ovarian Cancer - 45 Ovarian Cancer 45 Rheumatoid Arthritis - 43 Rheumatoid Ar… 43 Colorectal Cancer - 37 Colorectal Cancer 37 HIV Infections - 36 HIV Infections 36 Alzheimer Disease - 36 Alzheimer Disease 36

By Status

StatusTrial count
Completed 2,482
Recruiting 1,688
Active 1,437

By Phase

PhaseTrial count
Phase 3 1,954
Phase 2 1,449
NA 742
Phase 1 696
Phase 4 215
Early Phase 1 25

Reading the Clinical Trial Landscape in Arizona

ClinicalTrials.gov lists 5,607 clinical trials with study locations in Arizona. Of those, 1,688 are currently recruiting, roughly 30% of the state's indexed portfolio, above the 14% national average by 16 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 Arizona is "Completed" with 2,482 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 Arizona, regardless of sponsor type.

The phase distribution shown above breaks the same trials down by where they sit along the investigational pathway. For Arizona, Phase 3 accounts for 1,954 indexed trials and Phase 2 accounts for 1,449. 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 Arizona is Breast Cancer with 111 linked trials, across 15 top condition areas surfaced above. On the sponsor side, National Cancer Institute (NCI) leads with 231 studies tied to Arizona, 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 Arizona, 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 Arizona

1,688 trials in Arizona 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 Arizona's 30% 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.