As of August 2026, 1 paid clinical trial is recruiting at Hospital Sisters Health System (HSHS) - St Elizabeth's Hospital, located at HSHS St Elizabeth's Hospital, 1 St Elizabeth's Blvd, O'Fallon, IL 62269, phone (618) 234-2120 in O'Fallon, Illinois. Active studies at this site cover conditions such as Stage IV Lung Cancer AJCC v8, Acute Myeloid Leukemia and Anatomic Stage II Breast Cancer AJCC v8. Compensation typically covers time, travel, and study visits — most studies also offer study-related medical care at no cost to participants.
Recruiting trial data synced daily from ClinicalTrials.gov. Last sync: .
There are approximately 120 recruiting clinical trials in O'Fallon, Illinois listed on ClinicalTrials.gov. The number changes weekly as new studies open and others close enrollment.
Most recruiting trials in O'Fallon 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.
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.
The most common conditions under active study in O'Fallon include Stage IV Lung Cancer AJCC v8 (8), Acute Myeloid Leukemia (5), Anatomic Stage II Breast Cancer AJCC v8 (5), Lung Non-Small Cell Carcinoma (5), among many others. Browse the list above to explore every recruiting trial.
Yes. Healthy-volunteer studies — often early-phase pharmacology or vaccine trials — recruit in O'Fallon on an ongoing basis. Use the "Healthy volunteers only" filter above to view trials that accept participants without the study's target condition.
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.
Recruiting research sites in O'Fallon include Cancer Care Center of O'Fallon, HSHS Saint Elizabeth's Hospital, Cancer Care Specialists of Illinois, 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.
The largest active categories in O'Fallon are Cancer & tumors (92), Mental health & behavior (2), Cardiovascular (1). Use the filters above to narrow by therapeutic area, phase, age, or healthy-volunteer eligibility.
Hospital Sisters Health System (HSHS) - St Elizabeth's Hospital is located at HSHS St Elizabeth's Hospital, 1 St Elizabeth's Blvd, O'Fallon, IL 62269. Use the Google Maps link in the intro above to get directions.
You can reach Hospital Sisters Health System (HSHS) - St Elizabeth's Hospital by phone at (618) 234-2120. For questions about a specific trial, use the study coordinator contact listed on the individual study record — click any trial title above to open it.