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Rare Diseases clinical trials in Houston, TX

3 studies for Rare Diseases are looking for participants at sites in and around Houston (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
• Chicago, IL8 studies
• Washington, DC8 studies
• Philadelphia, PA7 studies
• Los Angeles, CA5 studies
• Cincinnati, OH5 studies
• Columbus, OH4 studies
• New York City, NY3 studies
• Durham, NC3 studies
• Seattle, WA3 studies
• Atlanta, GA3 studies
• St. Louis, MO3 studies

Other studies in Houston

• Non-Small Cell Lung Cancer145 studies
• Breast Cancer126 studies
• Cancer (all types)121 studies
• Metastatic Cancer104 studies
• Colorectal Cancer102 studies
• Ovarian Cancer89 studies
• Acute Myeloid Leukemia85 studies
• Lung Cancer78 studies
• Prostate Cancer76 studies
• Endometrial Cancer68 studies
• Pancreatic Cancer61 studies
• Melanoma59 studies

From ClinicalTrials.gov, data retrieved Oct 5, 2026. Each study sets its own eligibility; the study team decides who can join.