Clinical Trials in Colorado

Colorado has 422 clinical trials currently recruiting participants, ranking #12 among all states. The most-studied condition is Cystic Fibrosis with 11 active trials.

422

Total Trials

422

Recruiting

#12

National Rank

Conditions

Trials by Phase

139

Not Applicable

Phase 1 / Phase 2

Phase 2 / Phase 3

Early Phase 1

Phase 1

Phase 2

104

Phase 3

Phase 4

Top Conditions in Colorado

#	Condition	Trials
1	Cystic Fibrosis	11
2	Multiple Myeloma	10
3	Multiple Sclerosis	9
4	Breast Cancer	8
5	Melanoma	8
6	Type 1 Diabetes	8
7	Colorectal Cancer	7
8	Heart Failure	6
9	Migraine	6
10	Asthma	6
11	Thyroid Cancer	5
12	Ovarian Cancer	5
13	Endometrial Cancer	5
14	Solid Tumor	5
15	Rheumatoid Arthritis	5
16	Alzheimer Disease	5
17	Myasthenia Gravis	5
18	Ulcerative Colitis	5
19	Crohn's Disease	5
20	Coronary Artery Disease	4

Top Sponsors in Colorado

#	Sponsor	Trials
1	University of Colorado, Denver	45
2	Merck Sharp & Dohme LLC	12
3	Hoffmann-La Roche	11
4	Pfizer	9
5	Janssen Research & Development, LLC	9
6	AbbVie	8
7	AstraZeneca	8
8	Regeneron Pharmaceuticals	7
9	Novartis Pharmaceuticals	6
10	Bristol-Myers Squibb	6
11	Eli Lilly and Company	5
12	Boehringer Ingelheim	5
13	VA Office of Research and Development	4
14	University of California, Los Angeles	4
15	Amgen	4

Cities With Most Trials in Colorado

#	City	Trials
1	Aurora	252
2	Denver	106
3	Colorado Springs	49
4	Lakewood	16
5	Fort Collins	16
6	Grand Junction	13
7	Littleton	11
8	Englewood	9
9	Lone Tree	9
10	Golden	7
11	Loveland	5
12	Highlands Ranch	5
13	Durango	4
14	Sheridan	3
15	Boulder	3

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

Colorado currently has 422 clinical trials actively recruiting participants, making it #12 nationally by total trial count.

The most-studied conditions in Colorado are Cystic Fibrosis (11 trials), Multiple Myeloma (10 trials), Multiple Sclerosis (9 trials).

Browse the conditions listed on this page to find trials recruiting in Colorado. 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.

Colorado 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.