Clinical Trials in California

California is home to a significant concentration of clinical research activity, with academic medical centers, community hospitals, and specialized research clinics serving as active trial sites across a broad range of medical conditions. The studies listed here have at least one enrolled site in California and represent Phase 1 through Phase 4 research sponsored by NIH, pharmaceutical companies, device manufacturers, and independent investigators.

Right now ClinicalMetric tracks 850 actively recruiting studies with California sites out of 850 registered in total. The busiest research areas in California are Breast Cancer, Ovarian Cancer, Colorectal Cancer. Leading sponsors running trials in the state include Stanford University, University of California, San Francisco, City of Hope Medical Center. By stage, California trials break down as Phase 1 (168), Phase 2 (228), Phase 3 (167), Phase 4 (23).

All trial data is sourced directly from ClinicalTrials.gov and updated daily. Recruiting status, eligibility criteria, enrollment targets, and contact information are included for each study. Patients and caregivers should review the full eligibility criteria on each trial listing — or consult their treating physician — before contacting a study site.

Frequently Asked Questions — Clinical Trials in California