Testing the Addition of an Anti-Cancer Drug, Irinotecan, to the Standard Chemotherapy Treatment (FOLFOX) after Long-Course Radiation Therapy for Advanced-Stage Rectal Cancers to Improve the Rate of Complete Response and Long-Term Rates of Organ Preservation and Continuing Response

Active:	Yes
Cancer Type:	Colon/Rectal Cancer Unknown Primary	NCT ID:	NCT05610163
Trial Phases:	Phase II Phase III	Protocol IDs:	A022104 (primary) A022104 NCI-2022-07800
Eligibility:	18 Years and older, Male and Female	Study Type:	Treatment
Study Sponsor:	Alliance for Clinical Trials in Oncology
NCI Full Details:	http://clinicaltrials.gov/show/NCT05610163

Summary

This phase II/III trial compares the effect of usual treatment approach alone (FOLFOX or CAPOX after chemoradiation) with using FOLFIRINOX after chemoradiation in patients with stage II-III rectal cancer. Combination chemotherapy regiments, such as FOLFIRINOX [folinic acid (leucovorin), fluorouracil, irinotecan, and oxaliplatin], FOLFOX (leucovorin, fluorouracil, and oxaliplatin), or CAPOX (capecitabin and oxaliplatin) use more than one anticancer drug that work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. FOLFOX or CAPOX are used after chemoradiation as usual treatment for rectal cancer. Giving FOLFIRINOX after chemoradiation may increase the response rate for the primary rectal tumor and lead to higher rates of clinical complete response (and thus a chance to avoid surgery) compared to FOLFOX or CAPOX after chemoradiation in patients with locally advanced rectal cancer.

Objectives

PRIMARY OBJECTIVE:
I. To evaluate and compare the clinical complete response (cCR) rates in patients with locally advanced rectal cancer treated with neoadjuvant long-course radiotherapy (LCRT) followed by neoadjuvant modified leucovorin fluorouracil, irinotecan, and oxaliplatin (mFOLFIRINOX) versus neoadjuvant LCRT followed by neoadjuvant modified leucovorin, fluorouracil, and oxaliplatin (mFOLFOX6). (Phase II)
II. To evaluate and compare disease-free survival (DFS) in patients with locally advanced rectal cancer treated with neoadjuvant LCRT followed by neoadjuvant mFOLFIRINOX versus neoadjuvant LCRT followed by neoadjuvant mFOLFOX6. (Phase III)

SECONDARY OBJECTIVES:
I. To evaluate and compare organ-preservation-time (OPT) between two treatment arms.
II. To evaluate and compare time to distant metastasis between two treatment arms.
III. To evaluate and compare overall survival (OS) between two treatment arms.
IV. To evaluate and compare toxicity profiles of total neoadjuvant therapy (TNT) between two treatment arms.

EXPLORATORY OBJECTIVE:
I. Evaluation of circulating tumor deoxyribonucleic acid (ctDNA) kinetics during neoadjuvant therapy & surveillance and to correlate with radiographic, pathologic, and clinical outcomes.

OUTLINE: Patients are randomized to 1 of 2 arms.

GROUP I: Patients receive long-course chemoradiation therapy on study and then receive either: FOLFOX regimen consisting of leucovorin intravenously (IV), fluorouracil IV, and oxaliplatin IV or CAPOX consisting of capecitabine orally (PO), and oxaliplatin IV on study. Patients undergo computed tomography (CT) scan, magnetic resonance imaging (MRI), and biospecimen collection throughout the trial. Patients also undergo sigmoidoscopy throughout the trial and biopsy during screening.

GROUP II: Patients receive long-course chemoradiation therapy on study and then receive FOLFIRINOX regimen consisting of leucovorin IV, fluorouracil IV, irinotecan IV, and oxaliplatin IV on study. Patients undergo CT scan, MRI scan, and blood specimen collection throughout the trial. Patients undergo sigmoidoscopy throughout the trial and biopsy during screening.

Patients are followed for up to five years after finishing study treatment.

Treatment Sites in Georgia

Emory Saint Joseph's Hospital
5665 Peachtree Dunwoody Road NE
Atlanta, GA 30342
www.emoryhealthcare.org

Emory University Hospital - Midtown
550 Peachtree Street NE
Atlanta, GA 30308
404-686-4411
www.emoryhealthcare.org

Winship Cancer Institute of Emory University
1365 Clifton Road NE
Building C
Atlanta, GA 30322
404-778-5180
winshipcancer.emory.edu

**Clinical trials are research studies that involve people. These studies test new ways to prevent, detect, diagnose, or treat diseases. People who take part in cancer clinical trials have an opportunity to contribute to scientists’ knowledge about cancer and to help in the development of improved cancer treatments. They also receive state-of-the-art care from cancer experts... Click here to learn more about clinical trials.