Clinical Trials at HSHS Saint Elizabeth's Hospital

As of July 2026, 56 paid clinical trials are recruiting at HSHS Saint 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. 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: July 17, 2026.

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56 clinical trials at HSHS Saint Elizabeth's Hospital

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Testing Shorter Duration Radiation Therapy Versus the Usual Radiation Therapy in Patients Receiving the Usual Chemotherapy Treatment for Bladder Cancer, ARCHER Study

for Muscle Invasive Bladder Urothelial Carcinoma

Sites in O'Fallon, Alton +206 more locations

Sponsor: NRG Oncology

Sex: All·Age: 18+

Code: NCT07097142·Phase 3·Recruiting·Listed Jul 2025

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Cognitive Training for Cancer Related Cognitive Impairment in Breast Cancer Survivors

for Breast Cancer

Sites in O'Fallon, Alton +635 more locations

Sponsor: NRG Oncology

Sex: All·Age: 18 - 100

Code: NCT05896189·Recruiting·Listed Jun 2023

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High-dose Prophylactic Gabapentin (HOPE) vs. Placebo to Prevent Opioid Use for Oral Mucositis Pain During Concurrent Chemoradiation for Head and Neck Cancer

for Head and Neck Squamous Cell Carcinoma

Sites in O'Fallon, Springfield +167 more locations

Sponsor: Alliance for Clinical Trials in Oncology

Sex: All·Age: 18+

Code: NCT06992427·Phase 3·Recruiting·Listed May 2025

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Testing What Happens When an Immunotherapy Drug (Pembrolizumab) is Given by Itself Compared to the Usual Treatment of Chemotherapy With Radiation After Surgery for Recurrent Head and Neck Squamous Cell Carcinoma

for Recurrent Head and Neck Squamous Cell Carcinoma

Sites in O'Fallon, Springfield +128 more locations

Sponsor: National Cancer Institute (NCI)

Sex: All·Age: 18 - 79

Code: NCT04671667·Phase 2·Recruiting·Listed Dec 2020

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De-Escalation of Breast Radiation Trial for Hormone Sensitive, HER-2 Negative, Oncotype Recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)

for Stage I Breast Cancer

Sites in O'Fallon, Centralia +705 more locations

Sponsor: NRG Oncology

Sex: All·Age: 50 - 70

Code: NCT04852887·Phase 3·Recruiting·Listed Apr 2021

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Radiotherapy to Block Oligoprogression In Metastatic Non-Small-Cell Lung Cancer

for Non-small Cell Lung Cancer

Sites in O'Fallon, Shiloh +69 more locations

Sponsor: Canadian Cancer Trials Group

Sex: All·Age: 18+

Code: NCT06686771·Phase 3·Recruiting·Listed Nov 2024

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Adding the Immunotherapy Drug Cemiplimab to Usual Treatment for People With Advanced Non-Small Cell Lung Cancer Who Had Previous Treatment With Platinum Chemotherapy and Immunotherapy (An Expanded Lung-MAP Treatment Trial)

for Recurrent Lung Non-Small Cell Carcinoma

Drug: Cemiplimab

Sites in O'Fallon, Shiloh +379 more locations

Sponsor: SWOG Cancer Research Network

Sex: All·Age: 18+

Code: NCT06616584·Phase 2, Phase 3·Recruiting·Listed Sep 2024

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Evaluating Whether an Educational Website Called Current Together After Cancer (CTAC) Improves Follow-up Care for Colorectal Cancer Survivors

for Colorectal Cancer Stage II

Sites in O'Fallon, Alton +373 more locations

Sponsor: SWOG Cancer Research Network

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT07018869·Phase 3·Recruiting·Listed Jun 2025

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Testing Olaparib for One or Two Years, With or Without Bevacizumab, to Treat Ovarian Cancer

for Fallopian Tube Endometrioid Adenocarcinoma

Drug: Bevacizumab

Sites in O'Fallon, Alton +643 more locations

Sponsor: NRG Oncology

Sex: All·Age: 18+

Code: NCT06580314·Phase 3·Recruiting·Listed Aug 2024

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Assessing Benefits and Harms of Cannabis/Cannabinoid Use Among Cancer Patients Treated in Community Oncology Clinics

for Breast Carcinoma

Sites in O'Fallon, Alton +462 more locations

Sponsor: Wake Forest University Health Sciences

Sex: All·Age: 18+

Code: NCT06418204·Recruiting·Listed May 2024

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Stereotactic Radiosurgery Compared With Hippocampal-Avoidant Whole Brain Radiotherapy (HA-WBRT) Plus Memantine for 5 or More Brain Metastases

for Brain Metastases

Sites in O'Fallon, Decatur +36 more locations

Sponsor: Canadian Cancer Trials Group

Sex: All·Age: 18+

Code: NCT03550391·Phase 3·Recruiting·Listed Jun 2018

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Shorter Chemo-Immunotherapy Without Anthracycline Drugs for Early-Stage Triple Negative Breast Cancer

for Anatomic Stage I Breast Cancer AJCC v8

Sites in O'Fallon, Shiloh +913 more locations

Sponsor: SWOG Cancer Research Network

Sex: All·Age: 18+

Code: NCT05929768·Phase 3·Recruiting·Listed Jul 2023

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LOTUS-CC: An Observational Research Study to Uncover Subtypes of Cancer Cachexia

for Advanced Colorectal Carcinoma

Sites in O'Fallon, Alton +194 more locations

Sponsor: University of Rochester

Sex: All·Age: 18+

Code: NCT06073431·Recruiting·Listed Oct 2023

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Ramucirumab and Paclitaxel or FOLFIRI in Advanced Small Bowel Cancers

for Metastatic Small Intestinal Adenocarcinoma

Sites in O'Fallon, Alton +397 more locations

Sponsor: SWOG Cancer Research Network

Sex: All·Age: 18+

Code: NCT04205968·Phase 2·Recruiting·Listed Dec 2019

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Testing Whether the Addition of Carboplatin Chemotherapy to Cabazitaxel Chemotherapy Will Improve Outcomes Compared to Cabazitaxel Alone in People With Castrate-Resistant Prostate Cancer That Has Spread Beyond the Prostate to Other Parts of the Body

for Castration-Resistant Prostate Carcinoma

Sites in O'Fallon, Centralia +172 more locations

Sponsor: SWOG Cancer Research Network

Sex: Male·Age: 18+

Code: NCT06470243·Phase 3·Recruiting·Listed Jun 2024

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Testing if High Dose Radiation Only to the Sites of Brain Cancer Compared to Whole Brain Radiation That Avoids the Hippocampus is Better at Preventing Loss of Memory and Thinking Ability

for Metastatic Lung Small Cell Carcinoma

Sites in O'Fallon, Centralia +146 more locations

Sponsor: NRG Oncology

Sex: All·Age: 18+

Code: NCT04804644·Phase 3·Recruiting·Listed Mar 2021

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