Clinical Trials in Connecticut
Connecticut ranks #19 nationally by clinical-trial count, with 267 trials listed, all currently recruiting.
Among trials with a recorded phase, Phase 3 is the largest group at 68 trials.
The top conditions by trial volume are Sickle Cell Disease (7), Crohn Disease (6), Multiple Sclerosis (6).
267
Total Trials
267
Recruiting
#19
National Rank
20
Conditions
Trials by Phase
89
Not Applicable
10
Phase 2 / Phase 3
23
Phase 1 / Phase 2
6
Early Phase 1
24
Phase 1
39
Phase 2
68
Phase 3
8
Phase 4
Top Conditions in Connecticut
Top Sponsors in Connecticut
Cities With Most Trials in Connecticut
| # | City | Trials |
|---|---|---|
| 1 | New Haven | 170 |
| 2 | Hartford | 46 |
| 3 | Farmington | 17 |
| 4 | Stamford | 17 |
| 5 | Norwalk | 9 |
| 6 | West Haven | 7 |
| 7 | Waterford | 7 |
| 8 | Hamden | 7 |
| 9 | North Haven | 5 |
| 10 | New Britain | 5 |
| 11 | Bridgeport | 5 |
| 12 | Guilford | 4 |
| 13 | Derby | 4 |
| 14 | Greenwich | 4 |
| 15 | Trumbull | 4 |
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
Connecticut currently has 267 clinical trials actively recruiting participants, making it #19 nationally by total trial count.
The most-studied conditions in Connecticut are Sickle Cell Disease (7 trials), Crohn Disease (6 trials), Multiple Sclerosis (6 trials).
Browse the conditions listed on this page to find trials recruiting in Connecticut. 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.