As of August 2026, 133 paid clinical trials are recruiting for Oncology in Orange, California. Compensation typically covers time, travel, and study visits, and many studies also include study-related medical care at no cost.
Recruiting trial data synced daily from ClinicalTrials.gov. Last sync: .
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Newly added in Orange
Posted to ClinicalTrials.gov within the last 60 days — these studies are just starting to recruit.
Researchers run research studies in Orange, CA at 25 active sites. The clinics below currently host the largest number of recruiting studies — each name is followed by the conditions they focus on most.
How many paid clinical trials are currently recruiting in Orange?
There are approximately 511 recruiting clinical trials in Orange, California listed on ClinicalTrials.gov. The number changes weekly as new studies open and others close enrollment.
Do clinical trials in Orange pay participants?
Most recruiting trials in Orange compensate participants for their time, travel, and study visits. Compensation varies by sponsor, study phase, and visit requirements — the exact amount is disclosed by the study team during the informed consent process.
Who can participate in a clinical trial in Orange?
Eligibility depends on the specific study. Each trial defines its own inclusion criteria (age, diagnosis, medical history, prior treatments) and exclusion criteria. Both patients with specific conditions and healthy volunteers can qualify, depending on the study design.
What conditions are most commonly studied in Orange?
The most common conditions under active study in Orange include Breast Cancer (10), Ovarian Cancer (9), Acute Myeloid Leukemia (8), Hepatocellular Carcinoma (8), among many others. Browse the list above to explore every recruiting trial.
Are there clinical trials for healthy volunteers in Orange?
Yes. Healthy-volunteer studies — often early-phase pharmacology or vaccine trials — recruit in Orange on an ongoing basis. Use the "Healthy volunteers only" filter above to view trials that accept participants without the study's target condition.
How do I enroll in a clinical trial in Orange?
Click any study title above to see the full study record, including eligibility criteria, visit schedule, and the study team's contact information. Reach out to the central contact or recruiting site directly — they will guide you through screening and informed consent.
Where can I take part in paid clinical trials in Orange?
Recruiting research sites in Orange include Children's Hospital of Orange County, UC Irvine Health/Chao Family Comprehensive Cancer Center, University of California Irvine, among others. Each site lists its open studies and contact information on the study record above — call or email the site coordinator to ask about screening for a specific protocol.
What kinds of studies are recruiting in Orange right now?
The largest active categories in Orange are Cancer & tumors (216), Neurology & pain (19), Cardiovascular (19). Use the filters above to narrow by therapeutic area, phase, age, or healthy-volunteer eligibility.