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Common variants in genes coding for chemotherapy metabolizing enzymes, transporters, and targets: a case-control study of contralateral breast cancer risk in the WECARE Study
Journal article   Open access   Peer reviewed

Common variants in genes coding for chemotherapy metabolizing enzymes, transporters, and targets: a case-control study of contralateral breast cancer risk in the WECARE Study

Jennifer D Brooks, Sharon N Teraoka, Leslie Bernstein, Lene Mellemkjær, Kathleen E Malone, Charles F Lynch, Robert W Haile, Patrick Concannon, Anne S Reiner, David J Duggan, …
Cancer causes & control, Vol.24(8), pp.1605-1614
08/2013
DOI: 10.1007/s10552-013-0237-6
PMCID: PMC3709075
PMID: 23775025
url
https://doi.org/10.1007/s10552-013-0237-6View
Published (Version of record) Open Access

Abstract

Women who receive chemotherapy for a first primary breast cancer have been observed to have a reduced risk of contralateral breast cancer (CBC), however, whether the genetic profile of a patient modifies this protective effect is currently not understood. The purpose of this study is to investigate the impact of germline genetic variation in genes coding for drug metabolizing enzymes, transporters, and targets on the association between chemotherapy and risk of CBC. From the population-based Women's Environment Cancer and Radiation Epidemiology (WECARE) Study, we included 636 Caucasian women with CBC (cases) and 1,224 women with unilateral breast cancer (controls). The association between common chemotherapeutic regimens, CMF and FAC/FEC, and risk of CBC stratified by genotype of 180 single nucleotide polymorphisms in 14 genes selected for their known involvement in metabolism, action, and transport of breast cancer chemotherapeutic agents, were determined using conditional logistic regression. CMF (RR = 0.5, 95 % CI 0.4, 0.7) and FAC/FEC (RR = 0.7, 95 % CI 0.4, 1.0) are associated with lower CBC risk relative to no chemotherapy in multivariable-adjusted models. Here we show that genotype of selected genes involved in the metabolism and uptake of these therapeutic agents does not significantly alter the protective effect of either CMF or FAC/FEC on risk of CBC. The results of this study show that germline genetic variation in selected gene does not significantly alter the protective effect of CMF, FAC, and FEC on risk of CBC.
United States - epidemiology Prognosis Follow-Up Studies Humans Middle Aged Breast Neoplasms - etiology Methyltransferases - genetics Germ-Line Mutation - genetics Case-Control Studies Young Adult Membrane Transport Proteins - genetics Polymerase Chain Reaction Adult Female Registries Antineoplastic Agents - pharmacology Breast Neoplasms - epidemiology Genetic Predisposition to Disease Genome-Wide Association Study Pharmacogenetics Risk Factors Genotype Breast Neoplasms - drug therapy Cytochrome P-450 Enzyme System - genetics Polymorphism, Single Nucleotide - genetics Aged Biomarkers, Tumor - genetics DNA, Neoplasm - genetics

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