Colon Cancer Clinical Trial
Evaluation of Stool Based Markers for the Early Detection of Colorectal Cancers and Adenomas
Colon cancer is the second most common cancer in men and women. It is a disease that can be prevented if it is found early. Colonoscopy is still the best screening tool for colon cancer and the polyps that turn into colon cancer. However, due to a variety of factors, including affordability, time, and age, not all patients are able to be screened. Researchers are working on other options for early detection that are as accurate as colonoscopy.
The purpose of this study if to determine if stool or blood can be used to detect colon cancers as early or earlier than colonoscopy. The researchers plan to use these samples to learn about specific proteins (also known as biomarkers) that may indicate colon polyps, colon cancer or an increased risk of developing colon cancer. In order to learn more about preventing and detecting colon and rectal cancer, we are collecting samples from subjects with cancer, adenomas, and colonoscopies who may be at risk for polyps.
In recognition of the fact that novel potential biomarkers are continually being identified and will need to be validated in a rapid, efficient and scientifically rigorous manner, the NCI has made an enormous commitment to the development of a network that will facilitate biomarker development and validation in multiple organ sites. As part of the National Cancer Institute-funded Early Detection Research Network (EDRN), the Great Lakes-New England Clinical Epidemiological Center (GLNE CEC) proposes a research study that validates potential molecular markers ("biomarkers") for the detection of precancerous and cancerous conditions and cancer risk assessment. Although examples of such biomarkers are currently in clinical use (i.e. CEA, CA-125), there are limitations to all of them. Our consortium focuses on gastrointestinal neoplasia. The goals of this phase of the proposed research are:
Assessment of the utility of individual stool-based, serum-based and urine-based biomarkers for discriminating between patients with adenocarcinomas, patients with adenomas, patients without adenomas and normal subjects both at normal and high risk for developing colon cancer.
Construction of a panel of markers from those considered in Objective 1 to discriminate, under a number of assumptions concerning prevalence and cost of misclassification, between:
Subjects with normal colons versus patients without adenomas, patients with adenomas and patients with cancers;
Subjects with normal colons, patients without adenomas and patients with adenomas, versus subjects with cancers;
Subjects with normal colons versus patients without and patients with adenomas versus patients with cancers.
Comparison of the characteristics of individual markers and panels as discriminators to those of the established current standard, fecal immunochemical test (FIT).
Continued support of a renewal of a bank of stool samples linked to serum, tissue, and clinical data from patients with colorectal cancer, adenomas and normal controls for validation of stool-based markers that may be developed in the future.
To build our collection, we propose to collect stool, FIT, serum, plasma, and tissue samples from 1200 new subjects. Each biomarker will be analyzed individually and considered as a potential panel marker to be used for future largescale screening longitudinal trials. (This protocol previously recruited an additional 682 subjects from January 2006 to June 2010.)
Willing to sign informed consent
Able to physically tolerate removal of up to 60 ml of blood
Adults at least 18 years old
Willing to collect 1-2 stool samples and prepare a Fecal Immunochemical Test (FIT)
Pregnant or nursing women who otherwise meet the eligibility criteria may participate
Subjects with one of the following:
Colorectal adenocarcinoma-not treated and in colon at time of stool collection (CRC bin)
Adenoma-pathologically confirmed adenoma present in colon at time of stool collection (Adenoma Bin)
Higher Risk Non-neoplastic Bin
Subjects with a personal history of adenomas (confirmed by pathology) with none present on qualifying colonoscopy
Subjects with a personal history of CRC (longer than 3 years ago because of exclusion criteria of cancer within last 3 years) with none present at time of qualifying colonoscopy
Any family history of CRC (1st degree relative)
Current positive screening stool test for blood, for DNA or for both within 12 months with no follow-up intervention.
Average Risk, Non-neoplastic Bin
No history or current finding of any colorectal neoplasia including CRC, adenomas, sessile serrated adenomas and no family history of CRC.
Subjects who had CRC that was successfully treated at least three years ago may be considered eligible for the adenoma bin if their polyps are adenomas and there is no evidence of CRC, or for the higher risk non-neoplastic bin as noted above.
Subjects whose screening colonoscopy shows any of these types of polyps may be included in the non-neoplastic or the higher risk non-neoplastic bin if they meet the other criteria noted above.
Benign mucosal polyps
Polypoid granulation tissue
Prolapsed mucosal polyps
Transitional mucosal polyp
Cancer patients who have had any surgery, radiation, or chemotherapy for their current colorectal cancer prior to collecting the baseline samples
History of or clinically active Inflammatory Bowel Disease
Known HNPCC or FAP
Inability to provide informed consent.
Other active malignancy within 3 years of enrollment except any of the following:
Squamous cell carcinoma of the skin
Basal cell carcinoma of the skin
Carcinoma in situ of the cervix, Stages Ia or Ib invasive squamous cell carcinoma of the cervix treated by surgery only. (Excluded if had pelvic radiation)
Stage Ia Grade 1 adenocarcinoma of the endometrium treated with surgery
Patients on active chemotherapy or radiation treatment for any purpose
Known HIV or chronic active viral hepatitis
Women who are pregnant
CT colonography (virtual colonoscopy) patients
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There are 9 Locations for this study
Boston Massachusetts, 02215, United States More Info
Ann Arbor Michigan, 48109, United States More Info
Minneapolis Minnesota, 55455, United States More Info
New York New York, 10016, United States More Info
Chapel Hill North Carolina, 27599, United States More Info
Hershey Pennsylvania, 17033, United States More Info
Houston Texas, 77030, United States More Info
Seattle Washington, 98195, United States More Info
Adelaide South Australia, 5001, Australia More Info
Toronto Ontario, , Canada More Info
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