- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01815463
Non-Invasive Prediction of Colorectal Neoplasia (NIPCON)
Hypothesis:The Adnab-9 antigen is a predictive biomarker in individuals at risk of developing colorectal neoplasia.
Study aim is to evaluate the potential of the Adnab-9 monoclonal antibody (MAb) as a marker of cancer risk in a population at increased risk for colorectal cancer (CRC). This marker would be compared to other current and emerging diagnostic methods. 2,800 Veterans would be recruited into the study. In phase 1, candidates would be defined as having increased CRC risk by a short questionnaire. Stool samples would be obtained and a semi-quantitative Adnab-9 antigen assay (ELISA) would be determined. Patients with differing high and low estimations of fecal Adnab-9 would undergo colonoscopy at which time other samples of effluent and colonic mucosa would be taken, and a detailed lifestyle and nutritional questionnaire would be completed. The characteristics of the Adnab-9 fecal test as a diagnostic test would be critically determined using the outcome of the colonoscopic and other test results. The patients will be contacted through the mail and by word of mouth. Informed consent will be obtained before the samples are obtained. The participants are clinically defined as high-risk and therefore screening colonoscopy would be likely performed in any event. A number of assays for Adnab-9 are feasible including slot-blot, Western blot, and ELISA. Other stool studies include conventional fecal occult blood tests (FOBT or FIT) that will be performed in tandem. The investigators therefore began this method of collection and obtained consent from over 2000 patients with a similar overall compliance rate with FOBT screening procedures to that reported previously of approximately 50%. Currently the study is no longer enrolling patients at the Detroit VA and is now finalizing data entry. Another 450 patients to be recruited at the Philadelphia VAMC.
Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Pennsylvania
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Philadelphia, Pennsylvania, United States, 19104
- Philadelphia Vamc
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- ability to complete a consent form
- must be at above average risk for colorectal neoplasia
- physically able to undergo colonoscopy or barium enema
Exclusion Criteria:
- Mentally handicapped
- Physically infirm
- Low risk for colorectal neoplasia
- Pregnant individuals
- Vulnerable populations
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
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colorectal neoplasia
No interventions Record colorectal neoplasia
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Correlation of Adnab-9 stool result with outcome of colonoscopy
Time Frame: 10 years
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Stool is collected on guaiac stool cards and/or stool Polymedco sample bottle and extracted.
Extracted stool is assayed for protein content and this is used as a standard for the Adnab-9 ELISA.
Record review note colonoscopy outcome which is correlated with Adnab-9 ELISA result.
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10 years
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Define the origin of the Adnab-9 bound antigen
Time Frame: 10 years
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Biopsies are taken at the time of colonoscopy in ~10% of initial enrollees, from 6 colonic segments.
In addition colonic effluent.
saliva, urine and blood samples are taken.
ELISA and immunohistochemistry for Adnab-9 binding are performed.
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10 years
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Collaborators and Investigators
Investigators
- Principal Investigator: Martin Tobi, MB,ChB, Philadelphia VAMC (WOC) Detroit VAMC (WOC) Saginaw VAMC
- Principal Investigator: Fadi Antaki, MD, Detroit VAMC
- Principal Investigator: John Lieb, MD, Philadelphia PVAMC
Publications and helpful links
General Publications
- Tobi M, Prabhu S, Gage RE, Orr T, Lawson MJ. Colorectal cancer risk: the impact of evidence of a field effect of carcinogenesis on blinded diagnosis using an anti-adenoma antibody test performed on colonoscopic effluent. Dig Dis Sci. 2002 Feb;47(2):317-21. doi: 10.1023/a:1013713920805.
- Tobi M, Elitsur Y, Moyer MP, Halline A, Deutsch M, Nochomovitz L, Luk GD. Mucosal origin and shedding of an early colonic tumor marker defined by Adnab-9 monoclonal antibody. Scand J Gastroenterol. 1993 Dec;28(12):1025-34. doi: 10.3109/00365529309098304.
- Tobi M, Maliakkal B, Zitron I, Alousi M, Goo R, Nochomovitz L, Luk G. Adenoma-derived antibody, Adnab-9 recognizes a membrane-bound glycoprotein in colonic tissue and effluent material from patients with colorectal neoplasia. Cancer Lett. 1992 Oct 30;67(1):61-9. doi: 10.1016/0304-3835(92)90009-k.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Digestive System Diseases
- Neoplasms by Histologic Type
- Neoplasms
- Neoplasms by Site
- Neoplasms, Glandular and Epithelial
- Gastrointestinal Neoplasms
- Digestive System Neoplasms
- Gastrointestinal Diseases
- Genetic Diseases, Inborn
- Colonic Diseases
- Intestinal Diseases
- Pathological Conditions, Anatomical
- Intestinal Neoplasms
- Colorectal Neoplasms
- Neoplastic Syndromes, Hereditary
- Polyps
- Intestinal Polyps
- Adenomatous Polyps
- Adenoma
- Intestinal Polyposis
- Colonic Polyps
- Adenomatous Polyposis Coli
Other Study ID Numbers
- 00919
- 0409000159 (Other Grant/Funding Number: 096294M1F)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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