Colorectal Cancer, Precancerous Condition
Conditions
Keywords
precancerous condition, colon cancer, rectal cancer
Brief summary
RATIONALE: Collecting and storing samples of tissue, blood, and other body fluids to test in the laboratory and gathering information about health and lifestyle from participants may help doctors learn more about cancer risk factors. PURPOSE: This clinical trial is looking at biological, genetic, and lifestyle risk factors for developing colorectal adenomas or polyps in participants undergoing colonoscopy.
Detailed description
OBJECTIVES: * To recruit 7,000 participants who are planning to undergo colonoscopy. * To collect questionnaires and medical records from these participants. * To collect biological samples, including urine, blood, buccal cells and/or saliva, rectal tissue, and colorectal polyps from these participants. * To evaluate risk factors and other differences between participants found to have polyps and those who do not have polyps. OUTLINE: Participants undergo screening colonoscopy and removal of any polyps. Within 1 month of colonoscopy, participants undergo a 30-minute telephone interview and/or complete a mail survey to provide information on lifestyle and medical history that may be related to colorectal polyp risk. Participants who undergo removal of polyps during their colonoscopy also complete a 20-minute survey at their 3-year follow-up colonoscopy. Participants' medical records may also be reviewed. Blood samples are collected at the time of colonoscopy. Some participants may also provide blood samples 1-2 weeks prior to colonoscopy. Tissue from the bisected portions of colorectal polyps \> 5 mm in size that are removed during colonoscopy is also obtained. Some participants may also undergo normal colorectal tissue sample and saliva sample collection at the time of colonoscopy and urine sample collection 2 days prior to, during, and/or 8 weeks after colonoscopy. Tissue samples may be stored for future genetic studies to evaluate genetic factors that may cause or be related to colon polyps or colorectal cancer.
Interventions
OTHERsurvey administration
PROCEDUREbiopsy
PROCEDUREevaluation of cancer risk factors
PROCEDUREscreening colonoscopy
OTHERbiologic sample preservation procedure
OTHERcytology specimen collection procedure
OTHERmedical chart review
OTHERquestionnaire administration
Sponsors
National Cancer Institute (NCI)
Vanderbilt University
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
40 Years to 75 Years
Healthy volunteers
Yes
Inclusion criteria
DISEASE CHARACTERISTICS: * Scheduled to undergo colonoscopy at the Vanderbilt University Medical Center or the Tennessee Valley Veterans Administration Medical Center * No prior genetic colorectal cancer syndromes or colorectal adenoma PATIENT CHARACTERISTICS: * Must have a permanent residence and a telephone number * Able to speak and understand English * No prior inflammatory bowel disease * No prior cancer other than nonmelanoma skin cancer * Not a current resident in a correctional facility * No other rare exclusion that would prevent the collection of study data (e.g., extensive memory loss for past exposures), impair ability to provide informed consent, or make the participant an atypical colonoscopy patient (e.g., colonoscopy for organ transplant evaluation) * No prior extensive knowledge or contact with the investigation/protocol/hypotheses (the study collaborator or reviewer) PRIOR CONCURRENT THERAPY: * No prior partial or complete colon resection * No concurrent participation in a clinical trial involving the prevention of colon polyps
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Recruitment of 7,000 participants who are planning to undergo colonoscopy | — |
| Collection of questionnaires and medical records | — |
| Collection of biological samples, including urine, blood, buccal cells and/or saliva, rectal tissue, and colorectal polyps | — |
| Evaluation of risk factors and other differences between participants found to have polyps and those who do not have polyps | — |
Countries
United States
Outcome results
None listed