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Genetic polymorphisms of diabetes‐related genes, their interaction with diabetes status, and breast cancer incidence and mortality: The Long Island Breast Cancer Study Project
Author(s) -
Parada Humberto,
Cleveland Rebecca J.,
North Kari E.,
Stevens June,
Teitelbaum Susan L.,
Neugut Alfred I.,
Santella Regina M.,
Martinez Maria E.,
Gammon Marilie D.
Publication year - 2019
Publication title -
molecular carcinogenesis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.254
H-Index - 97
eISSN - 1098-2744
pISSN - 0899-1987
DOI - 10.1002/mc.22940
Subject(s) - single nucleotide polymorphism , breast cancer , biology , odds ratio , medicine , diabetes mellitus , oncology , hazard ratio , population , incidence (geometry) , cdkn2a , genotype , cancer , confidence interval , genetics , endocrinology , environmental health , gene , physics , optics
To examine 143 diabetes risk single nucleotide polymorphisms (SNPs), identified from genome‐wide association studies, in association with breast cancer (BC) incidence and subsequent mortality. A population‐based sample of Caucasian women with first primary invasive BC ( n = 817) and controls ( n = 1021) were interviewed to assess diabetes status. Using the National Death Index, women with BC were followed for >18 years during which 340 deaths occurred (139 BC deaths). Genotyping was done using DNA extracted from blood samples. We used unconditional logistic regression to estimate age‐adjusted odds ratios and 95% confidence intervals (CIs) for BC incidence, and Cox regression to estimate age‐adjusted hazard ratios and CIs for all‐cause and BC‐specific mortality. Twelve SNPs were associated with BC risk in additive genotype models, at α = 0.05. The top three significant SNPs included SLC30A8‐ rs4876369 ( P = 0.0034), HHEX ‐rs11187146 ( P = 0.0086), and CDKN2A/CDKN2B ‐rs1333049 ( P = 0.0094). Diabetes status modified the associations between rs4876369 and rs2241745 and BC incidence, on the multiplicative interaction scale. Six SNPs were associated with all‐cause ( CDKAL1 ‐rs981042, P = 0.0032; HHEX ‐rs1111875, P = 0.0361; and INSR ‐rs919275, P = 0.0488) or BC‐specific ( CDKN2A/CDKN2B ‐rs3218020, P = 0.0225; CDKAL1 ‐rs981042, P = 0.0246; and TCF2/HNF1B ‐rs3094508, P = 0.0344) mortality in additive genotype models, at α = 0.05. Genetic polymorphisms that increase the risk of developing diabetes may also increase the risk of developing and dying from BC.