Radiation Therapy and Chemotherapy in Treating Patients with Stage I-IIIB Rectal Cancer
- Diagnosis of biopsy proven stage I-IIIB (cT1-3, N0-2a, M0) adenocarcinoma of the rectum; staging must also be based on multidisciplinary evaluation including magnetic resonance imaging (MRI).
- Tumor =< 12 cm from anal verge as determined by MRI or endoscopy.
- Clinically detectable (magnetic resonance [MR], endoscopy, or digital rectal examination [DRE]) tumor present
- Eastern Cooperative Oncology Group (ECOG) performance status 0-2.
- Absolute neutrophil count (ANC) > 1,500 cells/mm^3.
- Hemoglobin (Hgb) > 8 g/dl.
- Platelets > 100,000 cells/mm^3.
- Women of childbearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control, abstinence) prior to study entry and for the duration of study participation. Should a woman become pregnant or suspect she is pregnant while participating in this study, she must inform her treating physician immediately.
- Able to understand and willing to sign an Institutional Review Board (IRB)-approved written informed consent document.
- Prior radiation therapy, chemotherapy or extirpative surgery for rectal cancer.
- Prior oxaliplatin or capecitabine use for any malignancy.
- No prior radiation therapy to the pelvis.
- A history of other malignancy with the exception of malignancies for which all treatment was completed at least 2 years before registration and the patient has no evidence of disease.
- Currently receiving any investigational agents.
- A history of allergic reaction attributed to compounds of similar chemical or biologic composition to capecitabine, fluorouracil (5FU), oxaliplatin, or leucovorin.
- Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, or cardiac arrhythmia.
- Pregnant and/or breastfeeding. Women of childbearing potential must have a negative serum pregnancy test within 14 days of study entry.
- Patients with human immunodeficiency virus (HIV) are eligible unless their CD4+ T-cell counts are < 350 cells/mcL or they have a history of acquired immunodeficiency syndrome (AIDS)-defining opportunistic infection within the 12 months prior to registration. Concurrent treatment with effective antiretroviral therapy (ART) according to Department of Health and Human Services (DHHS) treatment guidelines is recommended.
I. To determine the clinical complete response (cCR) response rate of patients with stage I-IIIB (cT1-3, N0-2a, M0) rectal cancer being treated with sequential short course radiotherapy followed by multi-drug chemotherapy.
I. To obtain prospective patient reported outcomes from an organ preservation approach towards early stage rectal cancer.
II. To determine the 2 year progression free survival (PFS).
III. To determine the incidence of any grade >= 3 toxicity during treatment.
IV. To determine the incidence of post chemoradiotherapy grade >= 3 toxicity at 1 year.
V. To determine quality of anorectal function at 1 year using the Functional Assessment of Cancer Therapy-Colorectal (FACT-C) questionnaire.
I. To associate differentially expressed biomarkers with cCR and other clinical outcomes.
II. To associate circulating tumor deoxyribonucleic acid (ctDNA) levels with cCR and other clinical outcomes.
Patients undergo 5 fractions of radiation therapy once daily (QD) over 5 days (Monday-Friday). Beginning 2-4 weeks, patients receive either FOLFOX regimen consisting of oxaliplatin intravenously (IV) over 2 hours, leucovorin IV over 2 hours, fluorouracil IV over 5-10 minutes followed by continuous infusion over 46 hours on day 1 or CAPOX regimen consisting of capecitabine orally (PO) twice daily (BID) on days 1-14 and oxaliplatin IV over 2 hours on day 1. Treatment with FOLFOX repeats every 14 days for up to 8 cycles and treatment with CAPOX repeats every 21 days for up to 5 cycles in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up every 3 months in year 1, every 3-4 months in year 2, and then every 4-6 months thereafter.
Trial Phase Phase II
Trial Type Treatment
Siteman Cancer Center at Washington University
- Primary ID 201904029
- Secondary IDs NCI-2019-03209
- Clinicaltrials.gov ID NCT03904043