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Rare Diseases clinical trials in Cincinnati, OH

5 studies for Rare Diseases are looking for participants at sites in and around Cincinnati (within about 30 miles). Open a study to see who can join and how to contact the study team.

Recruiting for a study here? Feature it at the top of this page — $99 for 30 days →

About Rare Diseases

A rare disease is one that affects fewer than 200,000 people in the United States. There are nearly 7,000, affecting more than 25 million Americans.

More about Rare Diseases on MedlinePlus

Rare Diseases trials in other cities

• Boston, MA9 studies
• Washington, DC8 studies
• Chicago, IL8 studies
• Philadelphia, PA7 studies
• Los Angeles, CA5 studies
• Columbus, OH4 studies
• Pittsburgh, PA3 studies
• Atlanta, GA3 studies
• New York City, NY3 studies
• Seattle, WA3 studies
• Durham, NC3 studies
• St. Louis, MO3 studies

Other studies in Cincinnati

• Non-Small Cell Lung Cancer31 studies
• Cancer (all types)26 studies
• Breast Cancer24 studies
• Heart Failure22 studies
• Metastatic Cancer21 studies
• Colorectal Cancer20 studies
• Obesity20 studies
• Acute Myeloid Leukemia20 studies
• Prostate Cancer19 studies
• Ovarian Cancer18 studies
• Lung Cancer18 studies
• Multiple Myeloma17 studies

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