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Multiple Sclerosis clinical trials recruiting in the U.S.

132 studies for Multiple Sclerosis are recruiting participants at sites across the United States.

Multiple sclerosis (MS) slows down or blocks messages between the brain and body. MS can be mild or severe. Learn about MS symptoms and treatment.

Cities with the most studies

• New York City, NY17 studies
• Chicago, IL15 studies
• Boston, MA14 studies
• Washington, DC13 studies
• Cleveland, OH10 studies
• Birmingham, AL9 studies
• Aurora, CO8 studies
• Kansas City, KS8 studies
• St. Louis, MO8 studies
• San Francisco, CA8 studies
• Tampa, FL7 studies
• Dallas, TX7 studies
• Columbus, OH7 studies
• Atlanta, GA7 studies
• Milwaukee, WI7 studies
• Baltimore, MD7 studies
• Seattle, WA7 studies
• Farmington Hills, MI6 studies
• Houston, TX6 studies
• Naples, FL5 studies
• Austin, TX5 studies
• Brockton, MA5 studies
• San Diego, CA5 studies
• Raleigh, NC4 studies
• Ann Arbor, MI4 studies
• Gainesville, FL4 studies
• Orlando, FL4 studies
• Scottsdale, AZ4 studies
• Champaign, IL4 studies
• Miami, FL4 studies
• Knoxville, TN4 studies
• Philadelphia, PA4 studies
• Mountain View, CA4 studies
• New Haven, CT4 studies
• Durham, NC4 studies
• Oklahoma City, OK3 studies
• Kirkland, WA3 studies
• Fort Collins, CO3 studies
• Honolulu, HI3 studies
• Sandy Springs, GA3 studies

By state

• Alabama9 studies
• Arizona6 studies
• California24 studies
• Colorado12 studies
• Connecticut6 studies
• District of Columbia4 studies
• Florida16 studies
• Georgia8 studies
• Hawaii3 studies
• Illinois19 studies
• Kansas9 studies
• Kentucky3 studies
• Maryland17 studies
• Massachusetts19 studies
• Michigan10 studies
• Minnesota4 studies
• Missouri8 studies
• Nebraska3 studies
• New Jersey11 studies
• New York20 studies
• North Carolina9 studies
• Ohio15 studies
• Oklahoma4 studies
• Pennsylvania8 studies
• Tennessee6 studies
• Texas18 studies
• Utah3 studies
• Virginia3 studies
• Washington10 studies
• Wisconsin8 studies

Recently updated studies

From ClinicalTrials.gov, data retrieved Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.