Genetic Variants Associated with Colorectal Adenoma Susceptibility
Bujanda Fernández de Pierola, Luis
Lozano, Juan José
Hijona Muruarmendiaraz, Elizabeth
PROCOLON research group
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PLOS ONE 11(4) : (2016) // Article ID e0153084
Background Common low-penetrance genetic variants have been consistently associated with colorectal cancer risk. Aim To determine if these genetic variants are associated also with adenoma susceptibility and may improve selection of patients with increased risk for advanced adenomas and/or multiplicity (>= 3 adenomas). Methods We selected 1,326 patients with increased risk for advanced adenomas and/or multiplicity and 1,252 controls with normal colonoscopy from population-based colorectal cancer screening programs. We conducted a case-control association study analyzing 30 colorectal cancer susceptibility variants in order to investigate the contribution of these variants to the development of subsequent advanced neoplasia and/or multiplicity. Results We found that 14 of the analyzed genetic variants showed a statistically significant association with advanced adenomas and/or multiplicity: the probability of developing these lesions increased with the number of risk alleles reaching a 2.3-fold risk increment in individuals with >= 17 risk alleles. Conclusions Nearly half of the genetic variants associated with colorectal cancer risk are also related to advanced adenoma and/or multiplicity predisposition. Assessing the number of risk alleles in individuals within colorectal cancer screening programs may help to identify better a subgroup with increased risk for advanced neoplasia and/or multiplicity in the general population.
Except where otherwise noted, this item's license is described as © 2016 Abulí et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.