Clinical Trials in Connecticut

Connecticut has 267 clinical trials currently recruiting participants, ranking #19 among all states. The most-studied condition is Sickle Cell Disease with 7 active trials.

267

Total Trials

267

Recruiting

#19

National Rank

Conditions

Trials by Phase

Not Applicable

Phase 2 / Phase 3

Phase 1 / Phase 2

Early Phase 1

Phase 1

Phase 2

Phase 3

Phase 4

Top Conditions in Connecticut

#	Condition	Trials
1	Sickle Cell Disease	7
2	Crohn Disease	6
3	Multiple Sclerosis	6
4	Migraine	6
5	Breast Cancer	5
6	Melanoma	5
7	Ovarian Cancer	5
8	Non Small Cell Lung Cancer	5
9	Myasthenia Gravis	5
10	Heart Failure	5
11	Obesity	5
12	Pancreatic Cancer	4
13	Esophageal Cancer	4
14	Bladder Cancer	4
15	Multiple Myeloma	4
16	Healthy	4
17	Crohn's Disease	4
18	Alcohol Use Disorder	4
19	Lung Cancer	3
20	Prostate Cancer	3

Top Sponsors in Connecticut

#	Sponsor	Trials
1	Yale University	55
2	Janssen Research & Development, LLC	9
3	Eli Lilly and Company	8
4	AstraZeneca	6
5	Merck Sharp & Dohme LLC	6
6	Pfizer	5
7	Bristol-Myers Squibb	5
8	Boehringer Ingelheim	5
9	AbbVie	4
10	Sanofi	4
11	Genzyme, a Sanofi Company	3
12	Hoffmann-La Roche	3
13	University of Connecticut	3
14	H. Lundbeck A/S	3
15	Amgen	3

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.

Sources: ClinicalTrials.gov

Trial counts reflect currently recruiting studies listed on ClinicalTrials.gov with locations in this state.

Connecticut Trial Details →All State Statistics →

The this entity category groups every U.S. clinical trials and research registries entity sharing this attribute. The list above is the data; the paragraphs below explain what the grouping means against the broader the NIH ClinicalTrials.gov registry distribution and how to read the relative rankings within the category.

For readers using this category as a starting point, the per-entity detail pages linked from the table above carry the underlying the NIH ClinicalTrials.gov registry data in full. The category-level view is the filter; the per-entity pages are the actual answer.

Source: ClinicalTrials.gov, 2026.