Abstract
Breast cancer as the most common cancer worldwide is influenced by genetic and physiological factors. Based on some evidence indicating the role of estrogen receptor 1 gene (ESR1) in breast cancer development, in this study, the association of three common variations in ESR1 gene with breast cancer and density in an Iranian population was evaluated. In a case–control study, 400 blood samples were collected for DNA extraction and genotyping. Breast density was assessed using mammography. ESR1 rs6915267 (G/A), rs2077647 (C/T) and rs1801132 (C/G) were genotyped using ARMS-PCR method. PHASE program was used to estimate the haplotypes frequencies. Our data analysis showed rs6915267 GA genotype in the heterozygous (GA) as well as co-dominant models was associated with lower mammographic density. None of the three variations were associated with the breast cancer risk. Haplotype analysis indicated G-T-C haplotype of rs6915267, rs2077647 and rs1801132 [OR = 0.54, 95% CI (0.31–0.92), p = 0.025] and G-T/G-T diplotype of rs6915267-rs2077647 [OR = 0.38, 95% CI (0.17–0.86), p = 0.019] were associated with a decreased risk of breast cancer. ESR1 may affect density of the breast and its haplotypes may modulate breast cancer risk.
Original language | English |
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Pages (from-to) | 8367-8375 |
Number of pages | 9 |
Journal | Molecular Biology Reports |
Volume | 47 |
Early online date | 24 Oct 2020 |
DOIs | |
Publication status | Published - Nov 2020 |
Bibliographical note
This work was based on the Master of Science thesis of Ms. Asma Khorshid Shamshiri and was financially supported by Mashhad University of Medical Sciences under Grant 981310.Keywords
- Breast neoplasm
- Genetic variation
- Breast density
- Estrogen receptor
- Association study
- ESTROGEN-RECEPTOR-ALPHA
- GENOME-WIDE ASSOCIATION
- SUSCEPTIBILITY
- POLYMORPHISMS