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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, OH9 studies
• St. Louis, MO8 studies
• Kansas City, KS8 studies
• Birmingham, AL8 studies
• San Francisco, CA8 studies
• Seattle, WA7 studies
• Columbus, OH7 studies
• Baltimore, MD7 studies
• Aurora, CO7 studies
• Farmington Hills, MI6 studies
• Milwaukee, WI6 studies
• Houston, TX6 studies
• Dallas, TX6 studies
• San Diego, CA5 studies
• Tampa, FL5 studies
• Austin, TX5 studies
• Atlanta, GA5 studies
• Durham, NC4 studies
• Brockton, MA4 studies
• New Haven, CT4 studies
• Naples, FL4 studies
• Knoxville, TN4 studies
• Champaign, IL4 studies
• Miami, FL4 studies
• Ann Arbor, MI4 studies
• Cincinnati, OH3 studies
• Rochester, MN3 studies
• Buffalo, NY3 studies
• Philadelphia, PA3 studies
• Mountain View, CA3 studies
• Kirkland, WA3 studies
• Scottsdale, AZ3 studies
• Plano, TX3 studies
• Burbank, CA3 studies
• Phoenix, AZ3 studies
• Palm Coast, FL3 studies

By state

• Alabama8 studies
• Arizona5 studies
• California24 studies
• Colorado11 studies
• Connecticut6 studies
• District of Columbia4 studies
• Florida13 studies
• Georgia7 studies
• Hawaii3 studies
• Illinois19 studies
• Kansas9 studies
• Kentucky3 studies
• Maryland17 studies
• Massachusetts18 studies
• Michigan10 studies
• Minnesota4 studies
• Missouri8 studies
• Nebraska3 studies
• New Jersey11 studies
• New York19 studies
• North Carolina8 studies
• Ohio14 studies
• Oklahoma3 studies
• Pennsylvania7 studies
• Tennessee6 studies
• Texas17 studies
• Utah3 studies
• Virginia3 studies
• Washington11 studies
• Wisconsin7 studies

Recently updated studies

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.