Colorectal Cancer
Conditions
Keywords
stage I colon cancer, stage II colon cancer, stage III colon cancer, stage I rectal cancer, stage II rectal cancer, stage III rectal cancer, adenocarcinoma of the colon, adenocarcinoma of the rectum
Brief summary
RATIONALE: Identifying gene mutations (microsatellite instability) may allow doctors to plan effective treatment for patients who develop colorectal cancer at an early age. PURPOSE: Genetic trial to determine the significance of gene mutations in helping predict the outcome of treatment in patients who develop stage I, stage II, or stage III colorectal cancer at an early age.
Detailed description
OBJECTIVES: * Evaluate the prognostic significance (e.g., overall survival) of microsatellite instability (MSI) status in patients with early age-of-onset stage I-III colorectal cancer, assuming the presence of a quantitative interaction between MSI status and family history of cancer. * Evaluate the development of metachronous neoplasms in this patient population. * Evaluate the histologic features and genetic changes associated with hereditary nonpolyposis colorectal cancer in this patient population. OUTLINE: This is a multicenter study. Patients are stratified according to family history using the Amsterdam II criteria for hereditary nonpolyposis colorectal cancer (positive vs negative). Patients undergo baseline colonoscopy before or within 6 months of initial curative resection and then surveillance colonoscopy at 1, 3, and 5 years (+/- 6 months) after resection. The number, size, location, histology, and method of removal of polyps are documented at the time of colonoscopy. Patients also undergo microsatellite instability (MSI) status testing and complete family history questionnaires at baseline. The prognostic significance of family history and MSI status is evaluated. The individual histologic features of the tumors are compared with the MSI status to determine their predictive value. The histologic features are also correlated with outcome to determine their prognostic significance. Patients may be referred for genetic counseling. A certificate of confidentiality protecting the identity of research participants in this project has been issued by the National Cancer Institute.
Interventions
Sponsors
National Cancer Institute (NCI)
Alliance for Clinical Trials in Oncology
Study design
Observational model
CASE_ONLY
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 49 Years
Healthy volunteers
No
Inclusion criteria
DISEASE CHARACTERISTICS: * Diagnosis of stage I-III adenocarcinoma of the colon or rectum * Must have undergone an initial curative resection within the past year * No colon or rectal cancer resection that does not allow for definitive T or N staging * No initial post-surgical surveillance colonoscopy prior to study entry * Must have a pathology specimen, with representative normal and tumor tissues, available for submission to the ACOSOG Central Specimen Bank prior to study entry * No personal or family history of familial adenomatous polyposis * No recurrent colorectal cancer PATIENT CHARACTERISTICS: Age * 18 to 49 at first diagnosis Other * Must be willing to provide a family cancer history to the study team and continue with follow-up colonoscopic surveillance * No other malignancy within the past 5 years except completely resected cervical cancer or nonmelanoma skin cancer * No evidence of recurrence of other prior malignancy PRIOR CONCURRENT THERAPY: Radiotherapy * No prior pelvic radiotherapy for rectal cancer * No concurrent preoperative pelvic radiotherapy for rectal cancer Surgery * See Disease Characteristics
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| overall survival | Up to 2 years |
Countries
Canada, United States
Outcome results
None listed