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Breast Cancer clinical trials recruiting in the U.S.

671 studies for Breast Cancer are recruiting participants at sites across the United States.

Breast cancer is a cancer that starts in the breast tissue, when cells change and grow out of control. These extra cells can form a mass called a tumor.

Cities with the most studies

• New York City, NY134 studies
• Houston, TX126 studies
• Boston, MA110 studies
• Nashville, TN79 studies
• Los Angeles, CA71 studies
• Edison, NJ69 studies
• St. Louis, MO65 studies
• Queens, NY63 studies
• Durham, NC63 studies
• Chicago, IL58 studies
• Philadelphia, PA56 studies
• Dallas, TX54 studies
• Washington, DC47 studies
• Baltimore, MD47 studies
• Arlington, VA46 studies
• San Antonio, TX46 studies
• Baldwin Park, CA45 studies
• San Francisco, CA43 studies
• Tampa, FL43 studies
• Miami, FL42 studies
• Greenburgh, NY42 studies
• Rochester, MN42 studies
• Atlanta, GA41 studies
• San Diego, CA41 studies
• Seattle, WA40 studies
• Staten Island, NY40 studies
• Jacksonville, FL40 studies
• Columbus, OH39 studies
• New Rochelle, NY38 studies
• Pittsburgh, PA38 studies
• New Haven, CT37 studies
• Cleveland, OH35 studies
• East Norwalk, CT35 studies
• Detroit, MI34 studies
• Kansas City, MO34 studies
• Portland, OR32 studies
• Denver, CO28 studies
• Salt Lake City, UT27 studies
• Santa Monica, CA27 studies
• Minneapolis, MN27 studies

By state

• Alabama29 studies
• Alaska8 studies
• Arizona57 studies
• Arkansas17 studies
• California178 studies
• Colorado52 studies
• Connecticut46 studies
• Delaware9 studies
• District of Columbia29 studies
• Florida146 studies
• Georgia53 studies
• Hawaii12 studies
• Idaho6 studies
• Illinois81 studies
• Indiana35 studies
• Iowa23 studies
• Kansas27 studies
• Kentucky24 studies
• Louisiana23 studies
• Maine16 studies
• Maryland68 studies
• Massachusetts116 studies
• Michigan75 studies
• Minnesota68 studies
• Mississippi11 studies
• Missouri75 studies
• Montana13 studies
• Nebraska26 studies
• Nevada19 studies
• New Hampshire16 studies
• New Jersey93 studies
• New Mexico19 studies
• New York174 studies
• North Carolina90 studies
• North Dakota10 studies
• Ohio79 studies
• Oklahoma20 studies
• Oregon40 studies
• Pennsylvania92 studies
• Rhode Island14 studies
• South Carolina23 studies
• South Dakota20 studies
• Tennessee90 studies
• Texas177 studies
• Utah42 studies
• Vermont6 studies
• Virginia76 studies
• Washington53 studies
• West Virginia13 studies
• Wisconsin45 studies
• Wyoming3 studies

Recently updated studies

From ClinicalTrials.gov, data retrieved Sep 29, 2026. Each study sets its own eligibility; the study team decides who can join.