DNA methylation, a biomarker for colorectal cancer: implications for screening and pathological utility.

Abstract:

:Currently up to one-third of colorectal cancer patients present with locally advanced or metastatic disease that precludes a surgical cure. Performance limitations and low uptake of current screening tools have fueled research to develop minimally invasive approaches that can detect early-stage neoplasms. The observation that altered DNA can be amplified from the stool or circulation has stimulated research on its use as a biomarker of occult neoplasia. De novo methylation of CpG islands 5' to certain tumor suppressor genes has been associated with epigenetic silencing. At certain loci this phenomenon is specific for neoplastic populations, and it is frequently detected at early stages in colorectal tumorigenesis. Accordingly, hypermethylation events have been proposed by researchers as ideal targets for the basis of a screening panel to detect peripheral tumor DNA. This critique reviews research findings on the use of epigenetic biomarkers in screening for occult neoplasia. In addition, the authors consider the pathological utility of epigenetic testing in refining tumor staging and predicting disease recurrence.

journal_name

Ann N Y Acad Sci

authors

Jubb AM,Quirke P,Oates AJ

doi

10.1111/j.1749-6632.2003.tb05980.x

subject

Has Abstract

pub_date

2003-03-01 00:00:00

pages

251-67

eissn

0077-8923

issn

1749-6632

journal_volume

983

pub_type

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