Clinical Trials in Massachusetts
Massachusetts ranks #5 nationally by clinical-trial count, with 639 trials listed, all currently recruiting.
Among trials with a recorded phase, Phase 2 is the largest group at 95 trials.
The top conditions by trial volume are Multiple Myeloma (13), Amyotrophic Lateral Sclerosis (12), Ovarian Cancer (12).
639
Total Trials
639
Recruiting
#5
National Rank
20
Conditions
Trials by Phase
309
Not Applicable
67
Phase 1 / Phase 2
11
Early Phase 1
10
Phase 2 / Phase 3
55
Phase 1
95
Phase 2
70
Phase 3
22
Phase 4
Top Conditions in Massachusetts
Top Sponsors in Massachusetts
Cities With Most Trials in Massachusetts
| # | City | Trials |
|---|---|---|
| 1 | Boston | 661 |
| 2 | Worcester | 38 |
| 3 | Charlestown | 15 |
| 4 | Belmont | 14 |
| 5 | Burlington | 10 |
| 6 | Watertown | 8 |
| 7 | Cambridge | 7 |
| 8 | Foxborough | 5 |
| 9 | Newton | 4 |
| 10 | Waltham | 4 |
| 11 | Springfield | 3 |
| 12 | Brookline | 3 |
| 13 | Andover | 3 |
| 14 | Lexington | 2 |
| 15 | Fall River | 2 |
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
Massachusetts currently has 639 clinical trials actively recruiting participants, making it #5 nationally by total trial count.
The most-studied conditions in Massachusetts are Multiple Myeloma (13 trials), Amyotrophic Lateral Sclerosis (12 trials), Ovarian Cancer (12 trials).
Browse the conditions listed on this page to find trials recruiting in Massachusetts. 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.