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Allergy clinical trials recruiting in the U.S.

25 studies for Allergy are recruiting participants at sites across the United States.

An allergy is a reaction by your immune system. Substances that cause reactions include pollen and food. Find the full list of allergies and symptoms.

Cities with the most studies

• New York City, NY6 studies
• Boston, MA6 studies
• Mountain View, CA5 studies
• Nashville, TN5 studies
• Washington, DC4 studies
• Ann Arbor, MI4 studies
• Cincinnati, OH3 studies
• Chicago, IL3 studies
• Durham, NC3 studies

By state

• Arizona4 studies
• California8 studies
• Illinois4 studies
• Maryland4 studies
• Massachusetts6 studies
• Michigan4 studies
• New York9 studies
• North Carolina3 studies
• Ohio3 studies
• Tennessee5 studies
• Texas5 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.