Clinical Trials in Iowa
Iowa ranks #33 nationally by clinical-trial count, with 117 trials listed, all currently recruiting.
Among trials with a recorded phase, Phase 2 is the largest group at 21 trials.
The top conditions by trial volume are Breast Cancer (4), Cystic Fibrosis (4), Bipolar Disorder (3).
117
Total Trials
117
Recruiting
#33
National Rank
20
Conditions
Trials by Phase
50
Not Applicable
7
Phase 2 / Phase 3
12
Phase 1 / Phase 2
1
Early Phase 1
10
Phase 1
21
Phase 2
10
Phase 3
6
Phase 4
Top Conditions in Iowa
Top Sponsors in Iowa
Cities With Most Trials in Iowa
| # | City | Trials |
|---|---|---|
| 1 | Iowa City | 102 |
| 2 | Des Moines | 6 |
| 3 | Davenport | 4 |
| 4 | West Des Moines | 4 |
| 5 | Waterloo | 3 |
| 6 | Ames | 2 |
| 7 | Council Bluffs | 1 |
| 8 | Ankeny | 1 |
| 9 | Sioux City | 1 |
| 10 | Boone | 1 |
| 11 | Fort Dodge | 1 |
| 12 | Jefferson | 1 |
| 13 | Marshalltown | 1 |
| 14 | Clive | 1 |
| 15 | Waukee | 1 |
Important: This information is for research purposes only. Always talk to your doctor about whether a clinical trial is right for you.
Frequently Asked Questions
Iowa currently has 117 clinical trials actively recruiting participants, making it #33 nationally by total trial count.
The most-studied conditions in Iowa are Breast Cancer (4 trials), Cystic Fibrosis (4 trials), Bipolar Disorder (3 trials).
Browse the conditions listed on this page to find trials recruiting in Iowa. Each condition page shows trial details, eligibility criteria in plain English, and contact information. Always talk to your doctor about whether a trial is right for you.
Trial counts reflect currently recruiting studies listed on ClinicalTrials.gov with locations in this state.
Source: ClinicalTrials.gov, 2026.