Most colorectal cancers arise from adenomatous polyps, and a large proportion of adenoma patients develop new (metachronous) adenomas after their initial polypectomy. There is considerable controversy regarding an appropriate surveillance interval for adenoma patients after removal of their initial adenomas. We propose to conduct a follow-up study to evaluate both genetic susceptibility risk variants and tumor markers in relation to the risk of metachronous adenomas. The proposed study will be conducted in approximately 1,500 patients diagnosed with either multiple adenomas or a pathologically advanced adenoma. These patients have already been recruited in our previous studies. In addition to clinical and epidemiologic data, we have already obtained germline DNA samples, fresh-frozen polyp tissues, and formalin-fixed, paraffin-embedded (FFPE) from a large proportion of study participants. In this study, we propose to: 1) follow up with study participants to collect information related to follow-up exams and adenoma recurrence and to obtain FFPE blocks of initial adenomas from the remaining patients whose samples have not yet been collected 2) evaluate the association of genetic and epigenetic tumor markers with recurrent adenomas 3) evaluate the association of adenoma recurrence with GWAS-identified genetic variants 4) establish a risk-assessment model and evaluate the utility of genetic susceptibility and tumor markers alone and in combination with known predictors (such as pathologic features of initial adenomas) in predicting the risk of adenoma recurrence. This proposed study will provide critical information that is valuable to identify high-risk adenoma patients for intensive follow-up programs and chemoprevention.

Public Health Relevance

Currently, no biomarker is used in the clinics to predict the risk of adenoma recurrence. The proposed study is designed to identify biomarkers that are potentially useful to stratify patients with adenomas into low- to high-risk groups for cost-efficient follow-up strategies and chemoprevention.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Specialized Center (P50)
Project #
5P50CA095103-13
Application #
8726910
Study Section
Special Emphasis Panel (ZCA1-RPRB-M)
Project Start
Project End
Budget Start
2014-05-01
Budget End
2015-04-30
Support Year
13
Fiscal Year
2014
Total Cost
$111,247
Indirect Cost
Name
Vanderbilt University Medical Center
Department
Type
DUNS #
004413456
City
Nashville
State
TN
Country
United States
Zip Code
37212
Zhu, Shoumin; Soutto, Mohammed; Chen, Zheng et al. (2016) Helicobacter pylori-induced cell death is counteracted by NF-κB-mediated transcription of DARPP-32. Gut :
Parang, B; Bradley, A M; Mittal, M K et al. (2016) Myeloid translocation genes differentially regulate colorectal cancer programs. Oncogene 35:6341-6349
Hong, Jun; Chen, Zheng; Peng, Dunfa et al. (2016) APE1-mediated DNA damage repair provides survival advantage for esophageal adenocarcinoma cells in response to acidic bile salts. Oncotarget 7:16688-702
McKenzie, Andrew J; Hoshino, Daisuke; Hong, Nan Hyung et al. (2016) KRAS-MEK Signaling Controls Ago2 Sorting into Exosomes. Cell Rep 15:978-87
Hardbower, Dana M; Singh, Kshipra; Asim, Mohammad et al. (2016) EGFR regulates macrophage activation and function in bacterial infection. J Clin Invest 126:3296-312
Zhao, Yue; Liu, Qi; Acharya, Pankaj et al. (2016) High-Resolution Mapping of RNA Polymerases Identifies Mechanisms of Sensitivity and Resistance to BET Inhibitors in t(8;21) AML. Cell Rep 16:2003-16
Yu, Huapeng H; Dohn, Michael R; Markham, Nicholas O et al. (2016) p120-catenin controls contractility along the vertical axis of epithelial lateral membranes. J Cell Sci 129:80-94
Schulte, Michael L; Khodadadi, Alexandra B; Cuthbertson, Madison L et al. (2016) 2-Amino-4-bis(aryloxybenzyl)aminobutanoic acids: A novel scaffold for inhibition of ASCT2-mediated glutamine transport. Bioorg Med Chem Lett 26:1044-7
Sievers, Chelsie K; Leystra, Alyssa A; Clipson, Linda et al. (2016) Understanding Intratumoral Heterogeneity: Lessons from the Analysis of At-Risk Tissue and Premalignant Lesions in the Colon. Cancer Prev Res (Phila) 9:638-41
Harris, Kelly L; Pulliam, Stephanie R; Okoro, Emmanuel et al. (2016) Western diet enhances benzo(a)pyrene-induced colon tumorigenesis in a polyposis in rat coli (PIRC) rat model of colon cancer. Oncotarget 7:28947-60

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