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Al-Shami K, Awadi S, Khamees A, Alsheikh AM, Al-Sharif S, Ala’ Bereshy R, Al-Eitan SF, Banikhaled SH, Al-Qudimat AR, Al-Zoubi RM, Al Zoubi MS. Estrogens and the risk of breast cancer: A narrative review of literature. Heliyon 2023; 9:e20224. [PMID: 37809638 PMCID: PMC10559995 DOI: 10.1016/j.heliyon.2023.e20224] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 10/10/2023] Open
Abstract
In female mammals, the development and regulation of the reproductive system and non-reproductive system are significantly influenced by estrogens (oestrogens). In addition, lipid metabolism is another physiological role of estrogens. Estrogens act through different types of receptors to introduce signals to the target cell by affecting many estrogen response elements. Breast cancer is considered mostly a hormone-dependent disease. Approximately 70% of breast cancers express progesterone receptors and/or estrogen receptors, and they are a good marker for cancer prognosis. This review will discuss estrogen metabolism and the interaction of estrogen metabolites with breast cancer. The carcinogenic role of estrogen is discussed in light of both conventional and atypical cancers susceptible to hormones, such as prostate, endometrial, and lung cancer, as we examine how estrogen contributes to the formation and activation of breast cancer. In addition, this review will discuss other factors that can be associated with estrogen-driven breast cancer.
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Affiliation(s)
- Khayry Al-Shami
- Faculty of Medicine, Yarmouk University, P.O Box 566, 21163, Irbid, Jordan
| | - Sajeda Awadi
- Faculty of Medicine, Yarmouk University, P.O Box 566, 21163, Irbid, Jordan
| | - Almu'atasim Khamees
- Faculty of Medicine, Yarmouk University, P.O Box 566, 21163, Irbid, Jordan
- Department of General Surgery, King Hussein Cancer Center, Amman, 11941, Jordan
| | | | - Sumaiya Al-Sharif
- Faculty of Medicine, Yarmouk University, P.O Box 566, 21163, Irbid, Jordan
| | | | - Sharaf F. Al-Eitan
- Faculty of Medicine, Yarmouk University, P.O Box 566, 21163, Irbid, Jordan
| | | | - Ahmad R. Al-Qudimat
- Department of Public Health, College of Health Sciences, QU-Health, Qatar University, Doha, 2713, Qatar
- Surgical Research Section, Department of Surgery, Hamad Medical Corporation, Doha, Qatar
| | - Raed M. Al-Zoubi
- Surgical Research Section, Department of Surgery, Hamad Medical Corporation, Doha, Qatar
- Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, Doha, 2713, Qatar
- Department of Chemistry, Jordan University of Science and Technology, P.O.Box 3030, Irbid, 22110, Jordan
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Allahloubi NMA, Zekri ARN, Ragab M, Mohanad M, Ahmed OS, Eid S, Ghareeb M, Gouda I, Bahnassy AA. Estrogen Receptor Gene Polymorphism as a Possible Genetic Risk Factor for Treatment Response in ER-Positive Breast Cancer Patients. Biochem Genet 2022; 60:1963-1985. [PMID: 35182276 DOI: 10.1007/s10528-022-10199-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 02/02/2022] [Indexed: 12/01/2022]
Abstract
Estrogen receptor-α (ESR1) single nucleotide polymorphisms (SNPs) have been related to breast cancer (BC) susceptibility. In this retrospective study we investigated ESR1 SNPs in association with survival and treatment response in BC patients. Seven ESR1 SNPs were genotyped using TaqMan probe assay in 100 formalin-fixed paraffin embedded blocks of Egyptian ER+BC patients. Log-binomial regression was used to assess the association of 5 ESR1 SNPs with relative risk of non-response to adjuvant-hormonal treatment. We compared the performance of five machine learning classification models for prediction of treatment response. Predictive models were developed using rs1801132, rs2228480, and rs9322354 that were significantly associated with increased risk for non-response along with the relevant clinical features. Survival analysis was performed to detect prognostic significance of ESR1 SNPs in ESR+BC patients. rs1801132 (C), rs2228480 (A), and rs9322354 (G) minor alleles significantly increased the risk of non-response to tamoxifen by more than 81, 84, and 117%, respectively, in ER+BC patients on anthracycline/anthracycline-taxanes-based chemotherapy. Multivariate Cox regression survival analysis revealed that rs1801132 (C) and large tumor size were independent predictors for poor survival outcome in ER+BC. The best response predictive model was a combination random forest, K-nearest neighbor, and decision tree having an area under the curve of 0.94 and an accuracy of 90.8%. Our proposed predictive model based on ESR1 rs1801132, rs2228480, and rs9322354 SNPs represents a promising genetic risk stratification for selection patients who could benefit from tamoxifen therapy in such a way that might facilitate personalized medicine required to improve ER+BC patients' outcome.
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Affiliation(s)
- Nasr M A Allahloubi
- Department of Medical Oncology, National Cancer Institute, Cairo University, Giza, Egypt
| | - Abdel-Rahman N Zekri
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Giza, Egypt
| | - Mohamed Ragab
- Medical Oncology, Faculty of Medicine, Zagazig University, Zagagig, Egypt
| | - Marwa Mohanad
- Biochemistry Department, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology, 6th of October, Giza, Egypt.
| | - Ola S Ahmed
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Giza, Egypt
| | - Salem Eid
- Department of Medical Oncology, National Cancer Institute, Cairo University, Giza, Egypt
| | - Mohamed Ghareeb
- Department of Medical Oncology, National Cancer Institute, Cairo University, Giza, Egypt
| | - Iman Gouda
- Department of Pathology, National Cancer Institute, Cairo University, Giza, Egypt
| | - Abeer A Bahnassy
- Tissue Culture and Cytogenetics Unit, Pathology Department, National Cancer Institute, Cairo University, Giza, Egypt
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Tan SC, Low TY, Mohamad Hanif EA, Sharzehan MAK, Kord-Varkaneh H, Islam MA. The rs9340799 polymorphism of the estrogen receptor alpha (ESR1) gene and its association with breast cancer susceptibility. Sci Rep 2021; 11:18619. [PMID: 34545128 PMCID: PMC8452701 DOI: 10.1038/s41598-021-97935-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 09/01/2021] [Indexed: 02/08/2023] Open
Abstract
The ESR1 rs9340799 polymorphism has been frequently investigated with regard to its association with breast cancer (BC) susceptibility, but the findings have been inconclusive. In this work, we aimed to address the inconsistencies in study findings by performing a systematic review and meta-analysis. Eligible studies were identified from the Web of Science, PubMed, Scopus, China National Knowledge Infrastructure, VIP and Wanfang databases based on the predefined inclusion and exclusion criteria. The pooled odds ratio (OR) was then calculated under five genetic models: homozygous (GG vs. AA), heterozygous (AG vs. AA), dominant (AG + GG vs. AA), recessive (GG vs. AA + AG) and allele (G vs. A). Combined results from 23 studies involving 34,721 subjects indicated a lack of significant association between the polymorphism and BC susceptibility (homozygous model, OR = 1.045, 95% CI 0.887-1.231, P = 0.601; heterozygous model, OR = 0.941, 95% CI 0.861-1.030, P = 0.186; dominant model, OR = 0.957, 95% CI 0.875-1.045, P = 0.327; recessive model, OR = 1.053, 95% CI 0.908-1.222, P = 0.495; allele model, OR = 0.987, 95% CI 0.919-1.059, P = 0.709). Subgroup analyses by ethnicity, menopausal status and study quality also revealed no statistically significant association (P > 0.05). In conclusion, our results showed that the ESR1 rs9340799 polymorphism was not associated with BC susceptibility, suggesting its limited potential as a genetic marker for BC.
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Affiliation(s)
- Shing Cheng Tan
- grid.412113.40000 0004 1937 1557UKM Medical Molecular Biology Institute, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Teck Yew Low
- grid.412113.40000 0004 1937 1557UKM Medical Molecular Biology Institute, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Ezanee Azlina Mohamad Hanif
- grid.412113.40000 0004 1937 1557UKM Medical Molecular Biology Institute, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Mohamad Ayub Khan Sharzehan
- grid.412113.40000 0004 1937 1557UKM Medical Molecular Biology Institute, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Hamed Kord-Varkaneh
- grid.411600.2Department of Clinical Nutrition and Dietetics, Student Research Committee, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Md Asiful Islam
- grid.11875.3a0000 0001 2294 3534Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Mirzaeyan P, Shokrzadeh M, Salehzadeh A, Ajamian F. Association of estrogen receptor 1 (ESR1) gene (rs2234693) polymorphism, ESR1 promoter methylation status, and serum heavy metals concentration, with breast cancer: A study on Iranian women population. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Yuan TA, Yourk V, Farhat A, Guo KL, Garcia A, Meyskens FL, Liu-Smith F. A Possible Link of Genetic Variations in ER/IGF1R Pathway and Risk of Melanoma. Int J Mol Sci 2020; 21:ijms21051776. [PMID: 32150843 PMCID: PMC7084478 DOI: 10.3390/ijms21051776] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/21/2020] [Accepted: 03/03/2020] [Indexed: 12/14/2022] Open
Abstract
The mechanism of gender disparity in cutaneous melanoma incidence remains unclear. Steroid hormones including estrogens have long been implicated in the course of melanoma, but the conclusion is controversial. Estrogen receptors (ERs) and insulin-like growth factor 1 receptor (IGF1R) show extensive crosstalk in cancer development, but how the ER/IGF1R network impacts melanoma is currently unclear. Here we studied the melanoma associations of selected SNPs from the ER/IGF1R network. Part of the International Genes, Environment, and Melanoma (GEM) cohort was used as a discovery set, and the Gene Environment Association Studies Initiative (GENEVA) dataset served as a validation set. Based on the associations with other malignant disease conditions, thirteen single nucleotide polymorphism (SNP) variants in ESR1, ESR2, IGF1, and IGF1R were selected for candidate gene association analyses. The rs1520220 in IGF1 and rs2229765 in IGF1R variants were significantly associated with melanoma risk in the GEM dataset after Benjamini-Hochberg multiple comparison correction, although they were not validated in the GENEVA set. The discrepancy may be caused by the multiple melanoma characteristics in the GEM patients. Further analysis of gender disparity was carried out for IGF1 and IGF1R SNPs in the GEM dataset. The GG phenotype in IGF1 rs1520220 (recessive model) presented an increased risk of melanoma (OR = 8.11, 95% CI: 2.20, 52.5, p = 0.006) in men but a significant opposite effect in women (OR = 0.15, 95% CI: 0.018, 0.86, p = 0.045). The AA genotype in IGF1R rs2229765 (recessive model) showed a significant protective effect in men (OR = 0.24, 95% CI: 0.07, 0.64, p = 0.008) and no effect in women. Results from the current study are warranted for further validation.
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Affiliation(s)
- Tze-An Yuan
- Program in Public Health, University of California Irvine, Irvine, CA 92697, USA; (T.-A.Y.); (F.L.M.)
| | - Vandy Yourk
- Department of Neurobiology and Behavior, School of Biological Sciences, University of California Irvine, Irvine, CA 92697, USA;
| | - Ali Farhat
- Department of Biomedical Engineering, The Henry Samueli School of Engineering, University of California Irvine, Irvine, CA 92697, USA;
| | - Katherine L. Guo
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90024, USA;
| | - Angela Garcia
- Department of Medicine, School of Medicine, University of California Irvine, Irvine, CA 92697, USA;
| | - Frank L. Meyskens
- Program in Public Health, University of California Irvine, Irvine, CA 92697, USA; (T.-A.Y.); (F.L.M.)
- Department of Medicine, School of Medicine, University of California Irvine, Irvine, CA 92697, USA;
- Chao Family Comprehensive Cancer Center, Irvine, CA 92697, USA
| | - Feng Liu-Smith
- Department of Medicine, School of Medicine, University of California Irvine, Irvine, CA 92697, USA;
- Chao Family Comprehensive Cancer Center, Irvine, CA 92697, USA
- Department of Epidemiology, School of Medicine, University of California Irvine, Irvine, CA 92697, USA
- Correspondence: ; Tel.: +1-949-824-2778
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Brkić M, Vujović S, Ivović M, Tančić Gajić M, Marina L, Franić Ivanišević M, Franić D. THE ROLE OF E2/P RATIO IN THE ETIOLOGY OF FIBROCYSTIC BREAST DISEASE, MASTALGIA AND MASTODYNIA. Acta Clin Croat 2018; 57:756-761. [PMID: 31168213 PMCID: PMC6544108 DOI: 10.20471/acc.2018.57.04.18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
- The aim of the study was to assess the role of the estradiol and progesterone relationship during the late luteal phase and the occurrence of fibrocystic breast disease (FBD). The concentration of estradiol/progesterone was measured in the group of women with FBD as study group (n=50) and control group of women without FBD (n=40). All women had regular ovulation cycles. Blood samples for estradiol (E2), progesterone (P) and prolactin determination were obtained in the morning at 8 am on days 21 and 24 of menstrual cycle. Significant mastalgia and mastodynia history in women with FBD was obtained with yes or no questionnaire. FBD diagnosis was confirmed with ultrasound (size and number of simple cysts). In the control group, a reduced E2/P ratio was noticed from day 21 to day 24 of the cycle (from 14.8±11.5 pg/mL to 9.1±6.1 pg/mL; p<0.05), which was not recorded in the group of women with FBD (study group). Even the slightest disturbance of the E2/P ratio may contribute to the occurrence of FBD with clinical manifestations of mastalgia and mastodynia.
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Affiliation(s)
| | - Svetlana Vujović
- 1Medical Faculty, University of Banja Luka, Banja Luka, Bosnia and Herzegovina; 2Department of Endocrinology, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia; 3Department of Gynecology and Obstetrics, Clinical Center of Serbia, Belgrade, Serbia; 4Outpatient Clinic of Obstetrics and Gynecology, Rogaška Slatina, Slovenia; 5School of Medicine, University of Maribor, Maribor, Slovenia
| | - Miomira Ivović
- 1Medical Faculty, University of Banja Luka, Banja Luka, Bosnia and Herzegovina; 2Department of Endocrinology, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia; 3Department of Gynecology and Obstetrics, Clinical Center of Serbia, Belgrade, Serbia; 4Outpatient Clinic of Obstetrics and Gynecology, Rogaška Slatina, Slovenia; 5School of Medicine, University of Maribor, Maribor, Slovenia
| | - Milina Tančić Gajić
- 1Medical Faculty, University of Banja Luka, Banja Luka, Bosnia and Herzegovina; 2Department of Endocrinology, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia; 3Department of Gynecology and Obstetrics, Clinical Center of Serbia, Belgrade, Serbia; 4Outpatient Clinic of Obstetrics and Gynecology, Rogaška Slatina, Slovenia; 5School of Medicine, University of Maribor, Maribor, Slovenia
| | - Ljiljana Marina
- 1Medical Faculty, University of Banja Luka, Banja Luka, Bosnia and Herzegovina; 2Department of Endocrinology, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia; 3Department of Gynecology and Obstetrics, Clinical Center of Serbia, Belgrade, Serbia; 4Outpatient Clinic of Obstetrics and Gynecology, Rogaška Slatina, Slovenia; 5School of Medicine, University of Maribor, Maribor, Slovenia
| | - Maja Franić Ivanišević
- 1Medical Faculty, University of Banja Luka, Banja Luka, Bosnia and Herzegovina; 2Department of Endocrinology, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia; 3Department of Gynecology and Obstetrics, Clinical Center of Serbia, Belgrade, Serbia; 4Outpatient Clinic of Obstetrics and Gynecology, Rogaška Slatina, Slovenia; 5School of Medicine, University of Maribor, Maribor, Slovenia
| | - Damir Franić
- 1Medical Faculty, University of Banja Luka, Banja Luka, Bosnia and Herzegovina; 2Department of Endocrinology, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia; 3Department of Gynecology and Obstetrics, Clinical Center of Serbia, Belgrade, Serbia; 4Outpatient Clinic of Obstetrics and Gynecology, Rogaška Slatina, Slovenia; 5School of Medicine, University of Maribor, Maribor, Slovenia
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Liu X, Huang J, Lin H, Xiong L, Ma Y, Lao H. ESR1 PvuII (rs2234693 T>C) polymorphism and cancer susceptibility: Evidence from 80 studies. J Cancer 2018; 9:2963-2972. [PMID: 30123365 PMCID: PMC6096366 DOI: 10.7150/jca.25638] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 06/09/2018] [Indexed: 12/11/2022] Open
Abstract
Emerging epidemiological researches have been performed to assess the association of ESR1 PvuII (rs2234693 T>C) polymorphism with the risk of cancer, yet with conflicting conclusions. Therefore, this updated meta-analysis was performed to make a more accurate evaluation of such relationship. We adopted EMBASE, PubMed, CNKI, and WANFANG database to search relevant literature before January 2018. Odds ratios (ORs) and 95% confidence intervals (CIs) were employed to estimate the relationship strengths. In final, 80 studies (69 publications) involving 26428 cases and 43381 controls were enrolled. Our results failed to provide significant association between overall cancer risk and PvuII polymorphism under homozygous (TT vs. CC) and heterozygous (TT vs. CT) models. Statistically significant relationship was only observed for PvuII polymorphism in allele model T vs. C (OR=0.95, 95% CI=0.91-0.99). Stratification analysis by cancer type suggested that T genotype significantly decreased prostate cancer risk (TT vs. CC: OR=0.79, 95% CI=0.66-0.94; T vs. C: OR=0.89, 95% CI=0.82-0.98), Leiomyoma risk (T vs. C: OR=0.82, 95% CI=0.68-0.98), and HCC risk (TT vs. CC: OR=0.45, 95% CI=0.28-0.71; T vs. C: OR=0.67, 95% CI=0.47-0.95). Furthermore, significantly decreased risk was also found for Africans, population-based and hospital-based studies in the stratified analyses. These results suggest that ESR1 PvuII (rs2234693 T>C) polymorphism may only have little impact on cancer susceptibility. In the future, large-scale epidemical studies are warranted to verify these results.
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Affiliation(s)
- Xiaoqi Liu
- Department of Pharmacy, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
| | - Jiawen Huang
- Department of Pharmacy, The First Affiliated Hospital, Jinan University, Guangzhou 510630, Guangdong, China
| | - Huiran Lin
- Laboratory Animal Management Office, Public Service Platform for Science and Technology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Lingjuan Xiong
- Department of Pharmacy, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
| | - Yunzi Ma
- Department of Pharmacy, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
| | - Haiyan Lao
- Department of Pharmacy, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
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Zhang ZL, Zhang CZ, Li Y, Zhao ZH, Yang SE. Association between ERα gene Pvu II polymorphism and breast cancer susceptibility: A meta-analysis. Medicine (Baltimore) 2018; 97:e0317. [PMID: 29702977 PMCID: PMC5944501 DOI: 10.1097/md.0000000000010317] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Estrogen has played an important role in the development of breast cancer. ER-α PvuII gene polymorphism is in close association with the occurrence risk of breast cancer, but no consensus has been achieved currently. METHODS PubMed, Embase, China National Knowledge Infrastructure (CNKI) database, Wanfang database, and VIP database were retrieved to collect the case-control studies on association between ERα gene Pvu II polymorphism and breast cancer risk published before September 1, 2017. Newcastle-Ottawa Scale (NOS) was used to assess the quality of the literatures, Stata 14.0 software was applied for meta-analysis, and the pooled odds ratio (OR) and 95% confidence interval (95% CI) were calculated. The subgroup analysis was performed to assess the confounding factors, followed by assessment of publication bias and sensitivity analysis. RESULTS A total of 26 studies were enrolled in the analysis based on inclusion criteria, which included 15,360 patients and 26,423 controls. The results demonstrated that ERα gene Pvu II polymorphism was in significant association with the decrease of breast cancer risk in 3 genetic models (C vs T, OR = 0.962, 95% CI = 0.933-0.992, P = .012; CC vs TT, OR = 0.911, 95% CI = 0.856-0.969, P = .003; CC vs TT/CT, OR = 0.923, 95% CI = 0.874-0.975, P = .004). Subgroup analysis was conducted on the basis of ethnicity and source of controls, whose results illustrated that ERα gene Pvu II polymorphism was in significant association with the decrease of breast cancer risk in Asians rather than in Caucasians (CC vs TT, OR = 0.862, 95% CI = 0.750-0.922, P = .038; CC vs TT/CT, OR = 0.851, 95% CI = 0.755-0.959, P = .008). In population-based subgroup rather than in hospital-based subgroup, ERα gene Pvu II polymorphism was in significant association with the decrease of breast cancer risk in the allele model, homozygous model, dominant model, and recessive model (C vs T, OR = 0.943, 95% CI = 0.911-0.977, P = .001; CC vs TT, OR = 0.878, 95% CI = 0.817-0.944, P = .000; CC/CT vs TT, OR = 0.936, 95% CI = 0.881-0.994, P = .031; CC vs TT/CT, OR = 0.902, 95% CI = 0.847-0.960, P = .001). CONCLUSION ERα gene Pvu II polymorphism exerts an important function in the progression of breast cancer.
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Affiliation(s)
- Zhen-lian Zhang
- Department of Lymphoma, The Third Clinical Medicine College of Xinjiang Medical University, Xinjiang
| | - Cui-zhen Zhang
- Department of Medical Laboratory, Chengdu Shuangliu District Maternal and Child Health Hospital, Sichuan
| | - Yan Li
- Department of Mastology, The Third Clinical Medicine College of Xinjiang Medical University, Xinjiang, China
| | - Zhen-hui Zhao
- Department of Mastology, The Third Clinical Medicine College of Xinjiang Medical University, Xinjiang, China
| | - Shun-e Yang
- Department of Lymphoma, The Third Clinical Medicine College of Xinjiang Medical University, Xinjiang
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Ghali RM, Al-Mutawa MA, Al-Ansari AK, Zaied S, Bhiri H, Mahjoub T, Almawi WY. Differential association of ESR1 and ESR2 gene variants with the risk of breast cancer and associated features: A case-control study. Gene 2018; 651:194-199. [PMID: 29414691 DOI: 10.1016/j.gene.2018.02.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 02/03/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND Estrogen is key to breast cancer pathogenesis, and acts by binding its receptor (ER), which exists as ERα and ERβ, encoded by ESR1 and ESR2 genes, respectively. Studies that investigated the association of ESR1 and ESR2 variants with breast cancer yielded mixed outcome, and ethnic contribution was proposed. We evaluated the association between ESR1 and ESR2 variants and breast cancer and associated features in Tunisian women. METHODS Retrospective case-control study involving 207 female breast cancer patients, and 284 control women. Genotyping was done by real-time PCR. RESULTS Minor allele frequencies (MAF) of tagging SNPs rs2234693 and rs3798577 (ESR1) were significantly higher, while MAF of rs1256049 (ESR2) was significantly lower in breast cancer patients vs. CONTROLS Patients carrying rs3798577 genotypes had higher risk, while rs1256049 genotype carriers had reduced risk of breast cancer. The association of ESR1 and ESR2 gene variants with breast cancer depended on ER and Her-2 status. ESR1 rs3798577 and ESR2 rs1256049 were associated with breast cancer in ER-positive cases, and ESR1 rs2234693, and rs3798577 were associated with breast cancer in Her-2-negative cases, while the association of ESR2 rs1256049 with breast cancer was seen in Her-2 positive cases. Haploview analysis identified 4-locus ESR1 haplotypes that were positively (CGTT, TACC, and TACT), and negatively (CGTC) associated with breast cancer. No ESR2 haplotypes associated with breast cancer were identified. CONCLUSION ESR1 alleles and genotypes, and specific 3-locus ESR1 haplotypes are related with increased breast cancer susceptibility in Tunisian women. However, ESR2 variant and specific 1-locus ESR1 haplotype have a protective effect.
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Affiliation(s)
- Rabeb M Ghali
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy of Monastir, University of Monastir, Tunisia; Faculty of Sciences of Bizerte, University of Carthage, Tunisia
| | | | | | - Sonia Zaied
- Department of Clinical Oncology, CHU Fattouma Bourguiba, Monastir, Tunisia
| | - Hanen Bhiri
- Department of Clinical Oncology, CHU Fattouma Bourguiba, Monastir, Tunisia
| | - Touhami Mahjoub
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy of Monastir, University of Monastir, Tunisia
| | - Wassim Y Almawi
- Faculty of Sciences, Universite' de Tunis El Manar, Tunis, Tunisia; School of Pharmacy, Lebanese American University, Byblos, Lebanon.
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10
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Hu X, Jiang L, Tang C, Ju Y, Jiu L, Wei Y, Guo L, Zhao Y. Association of three single nucleotide polymorphisms of ESR1with breast cancer susceptibility: a meta-analysis. J Biomed Res 2017; 31:213-225. [PMID: 28808214 PMCID: PMC5460609 DOI: 10.7555/jbr.31.20160087] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Expression of estrogen receptors is correlated with breast cancer risk, but inconsistent results have been reported. To clarify potential estrogen receptor (ESR)-related breast cancer risk, we analyzed genetic variants of ESR1 in association with breast cancer susceptibility. We performed a meta-analysis to investigate the association between rs2234693, rs1801132, and rs2046210 (single nucleotide polymorphisms of ESR1 ), and breast cancer risk. Our analysis included 44 case-control studies. For rs2234693, the CC genotype had a higher risk of breast cancer compared to the TT or CT genotype. For rs2046210, the AA, GA, or GA+ GG genotype had a much higher risk compared to the GG genotype. No significant association was found for the rs1801132 polymorphism with breast cancer risk. This meta-analysis demonstrates association between the rs2234693 and rs2046210 polymorphisms of ESR1 and breast cancer risk. The correlation strength between rs2234693 and breast cancer susceptibility differs in subgroup assessment by ethnicity.
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Affiliation(s)
- Xu Hu
- Department of Biotechnology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Linfei Jiang
- Department of Biotechnology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Chenhui Tang
- Department of Biotechnology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yuehong Ju
- Department of Biotechnology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Li Jiu
- School of International Pharmaceutical Business, China Pharmaceutical University, Nanjing, Jiangsu 211198, China
| | - Yongyue Wei
- Department of Biostatistics, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu 211166, China
| | - Li Guo
- School of Geographic and Biologic Information, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210046, China
| | - Yang Zhao
- Department of Biostatistics, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu 211166, China
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ESR1 and ESR2 polymorphisms in the BIG 1-98 trial comparing adjuvant letrozole versus tamoxifen or their sequence for early breast cancer. Breast Cancer Res Treat 2015; 154:543-55. [PMID: 26590813 DOI: 10.1007/s10549-015-3634-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 10/22/2022]
Abstract
Estrogen receptor 1 (ESR1) and ESR2 gene polymorphisms have been associated with endocrine-mediated physiological mechanisms, and inconsistently with breast cancer risk and outcomes, bone mineral density changes, and hot flushes/night sweats. DNA was isolated and genotyped for six ESR1 and two ESR2 single-nucleotide polymorphisms (SNPs) from tumor specimens from 3691 postmenopausal women with hormone receptor-positive breast cancer enrolled in the BIG 1-98 trial to receive tamoxifen and/or letrozole for 5 years. Associations with recurrence and adverse events (AEs) were assessed using Cox proportional hazards models. 3401 samples were successfully genotyped for five SNPs. ESR1 rs9340799(XbaI) (T>C) variants CC or TC were associated with reduced breast cancer risk (HR = 0.82,95% CI = 0.67-1.0), and ESR1 rs2077647 (T>C) variants CC or TC was associated with reduced distant recurrence risk (HR = 0.69, 95% CI = 0.53-0.90), both regardless of the treatments. No differential treatment effects (letrozole vs. tamoxifen) were observed for the association of outcome with any of the SNPs. Letrozole-treated patients with rs2077647 (T>C) variants CC and TC had a reduced risk of bone AE (HR = 0.75, 95% CI = 0.58-0.98, P interaction = 0.08), whereas patients with rs4986938 (G>A) genotype variants AA and AG had an increased risk of bone AE (HR = 1.37, 95% CI = 1.01-1.84, P interaction = 0.07). We observed that (1) rare ESR1 homozygous polymorphisms were associated with lower recurrence, and (2) ESR1 and ESR2 SNPs were associated with bone AEs in letrozole-treated patients. Genes that are involved in estrogen signaling and synthesis have the potential to affect both breast cancer recurrence and side effects, suggesting that individual treatment strategies can incorporate not only oncogenic drivers but also SNPs related to estrogen activity.
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Zhang Y, Zhang M, Yuan X, Zhang Z, Zhang P, Chao H, Jiang L, Jiang J. Association Between ESR1 PvuII, XbaI, and P325P Polymorphisms and Breast Cancer Susceptibility: A Meta-Analysis. Med Sci Monit 2015; 21:2986-96. [PMID: 26434778 PMCID: PMC4599181 DOI: 10.12659/msm.894010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Breast cancer is one of the leading causes of cancer-related deaths for women. Numerous studies have shown that single-nucleotide polymorphisms (SNPs) on the ESR1 gene are associated to this disease. However, data and conclusions are inconsistent and controversial. Material/Methods To investigate the association between PvuII (rs2234693), XbaI (rs9340799) and P325P (rs1801132) polymorphisms of ESR1 gene with the risk of breast cancer under different population categorizations, we searched multiple databases for data collection, and performed the meta-analysis on a total of 25 case-control studies. Three different comparison models – dominant model, recessive model, and homozygote comparison model – were applied to evaluate the association. Results Our results indicated that people with TT+TC or TT genotype were at a greater risk of developing breast cancer than those with CC genotype in the PvuII polymorphism. While for XbaI and P325P polymorphisms, no significance was found using any of the 3 models. Furthermore, the data were also stratified into different subgroups according to the ethnicity (white or Asian) and source of controls (hospital-based or population-based), and separate analyses were conducted to assess the association. The ethnicity subgroup assessment showed that the higher risk of breast cancer for TT genotype of PvuII polymorphism than CC genotype only occurred in Asian people, but not in white populations. For the source-stratified subgroup analysis, significant association suggested that people with TT + TC genotype were at a greater risk of developing breast cancer than those with CC genotype in the hospital-based subgroup. Conclusions Thus, this meta-analysis clarified the inconsistent conclusions from previous studies, conducted analyses for the entire population as well as for different subgroups using diverse population categorization strategies, and has the potential to help provide a personalized risk estimate for breast cancer susceptibility.
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Affiliation(s)
- Yiming Zhang
- Department of Clinical Laboratory, Changzhou Maternal and Child Health Care Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu, China (mainland)
| | - Ming Zhang
- Department of Clinical Laboratory, Changzhou Maternal and Child Health Care Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu, China (mainland)
| | - Xiaosong Yuan
- Department of Clinical Laboratory, Changzhou Maternal and Child Health Care Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu, China (mainland)
| | - Zhichen Zhang
- Jing Jiang College Affiliated to Jiang Su University, Zhengjiang, Jiangsu, China (mainland)
| | - Ping Zhang
- Department of Clinical Laboratory, Changzhou No. 2 People's Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu, China (mainland)
| | - Haojie Chao
- Department of Clinical Laboratory, Changzhou Maternal and Child Health Care Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu, China (mainland)
| | - Lixia Jiang
- Department of Clinical Laboratory, Changzhou Maternal and Child Health Care Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu, China (mainland)
| | - Jian Jiang
- Department of Clinical Laboratory, Changzhou Maternal and Child Health Care Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu, China (mainland)
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Mao Q, Qiu M, Dong G, Xia W, Zhang S, Xu Y, Wang J, Rong Y, Xu L, Jiang F. CAG repeat polymorphisms in the androgen receptor and breast cancer risk in women: a meta-analysis of 17 studies. Onco Targets Ther 2015; 8:2111-20. [PMID: 26316780 PMCID: PMC4540135 DOI: 10.2147/ott.s85130] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The association between polymorphic CAG repeats in the androgen receptor gene in women and breast cancer susceptibility has been studied extensively. However, the conclusions regarding this relationship remain conflicting. The purpose of this meta-analysis was to identify whether androgen receptor CAG repeat lengths were related to breast cancer susceptibility. The MEDLINE, PubMed, and EMBASE databases were searched through to December 2014 to identify eligible studies. Data and study quality were rigorously assessed by two investigators according to the Newcastle-Ottawa Quality Assessment Scale. The publication bias was assessed by the Begg’s test. Seventeen eligible studies were included in this meta-analysis. The overall analysis suggested no association between CAG polymorphisms and breast cancer risk (odds ratio [OR] 1.031, 95% confidence interval [CI] 0.855–1.245). However, in the subgroup analysis, we observed that long CAG repeats significantly increased the risk of breast cancer in the Caucasian population (OR 1.447, 95% CI 1.089–1.992). Additionally, the risk was significantly increased in Caucasian women carrying two alleles with CAG repeats ≥22 units compared with those with two shorter alleles (OR 1.315, 95% CI 1.014–1.707). These findings suggest that long CAG repeats increase the risk of breast cancer in Caucasian women. However, larger scale case-control studies are needed to validate our results.
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Affiliation(s)
- Qixing Mao
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Institute of Jiangsu Province, Nanjing, People's Republic of China ; Fourth Clinical College of Nanjing Medical University, Nanjing, People's Republic of China ; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Mantang Qiu
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Institute of Jiangsu Province, Nanjing, People's Republic of China ; Fourth Clinical College of Nanjing Medical University, Nanjing, People's Republic of China ; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Gaochao Dong
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Wenjie Xia
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Institute of Jiangsu Province, Nanjing, People's Republic of China ; Fourth Clinical College of Nanjing Medical University, Nanjing, People's Republic of China ; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Shuai Zhang
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Institute of Jiangsu Province, Nanjing, People's Republic of China ; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Youtao Xu
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Institute of Jiangsu Province, Nanjing, People's Republic of China ; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Jie Wang
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Yin Rong
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Institute of Jiangsu Province, Nanjing, People's Republic of China ; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Lin Xu
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Institute of Jiangsu Province, Nanjing, People's Republic of China ; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
| | - Feng Jiang
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Institute of Jiangsu Province, Nanjing, People's Republic of China ; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing, People's Republic of China
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14
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The CAG repeat polymorphism of the androgen receptor gene and breast cancer. Open Life Sci 2014. [DOI: 10.2478/s11535-014-0325-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
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15
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Genetic polymorphisms of ESR1, ESR2, CYP17A1, and CYP19A1 and the risk of breast cancer: a case control study from North India. Tumour Biol 2014; 35:4517-27. [PMID: 24430361 DOI: 10.1007/s13277-013-1594-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 12/23/2013] [Indexed: 12/21/2022] Open
Abstract
Estrogen is a key driver of breast cancer and genes involved in its signaling and biosynthesis are crucial in breast cancer progression. In this study, we investigated the role of estrogen signaling and synthesis related genes polymorphism in susceptibility to breast cancer risk in North India population in a case-control approach. We examined the association of single nucleotide polymorphism (SNP) in estrogen receptors, ESR1 (rs2234693) and ESR2 (rs2987983); estrogen biosynthesis enzymes, CYP17A1 (rs743572); and aromatase, CYP19A1 (rs700519) with breast cancer risk. Cases (n = 360) were matched to controls (n = 360) by age, sex, ethnicity, and geographical location. Results provided evidence that all the genetic variants were significantly associated with breast cancer risk among North Indian women. Furthermore, on performing stratified analysis between breast cancer risk and different clinicopathological characteristics, we observed strong associations for menopausal status, estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) status, clinical stage, and histological grade. Our results suggest that these genes could be used as molecular markers to assess breast cancer susceptibility and predicting prognosis in North India population.
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Tang L, Cheng GL, Xu ZH. Association between estrogen receptor α gene (ESR1) PvuII (C/T) and XbaI (A/G) polymorphisms and hip fracture risk: evidence from a meta-analysis. PLoS One 2013; 8:e82806. [PMID: 24482673 PMCID: PMC3903335 DOI: 10.1371/journal.pone.0082806] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 10/28/2013] [Indexed: 12/16/2022] Open
Abstract
Background and Objective Genetic factors are important in the pathogenesis of fractures. Notably, estrogen receptor α (ESR1) has been suggested as a possible candidate gene for hip fractures; however, published studies of ESR1 gene polymorphisms have been hampered by small sample sizes and inconclusive or ambiguous results. The aim of this meta-analysis is to investigate the associations between two novel common ESR1 polymorphisms (intron 1 polymorphisms PvuII-rs2234693: C>T and XbaI-rs9340799: A>G) and hip fracture. Methods Crude odds ratios (ORs) with 95% confidence intervals (CIs) were used to evaluate the strength of the association. Results Five case-control and three cohort studies were assessed, including a total of 1,838 hip fracture cases and 14,972 healthy controls. This meta-analysis revealed that the PvuII T allele is a highly significant risk factor for hip fracture susceptibility, with an effect magnitude similar in male and pre-menopausal and post-menopausal female patients. In stratified analysis based on ethnicity, the PvuII T allele remained significantly correlated with increased risk of hip fracture in Caucasian populations; this correlation, however, was not found in Asian populations. Unlike the PvuII polymorphism, we did not find significant differences in the XbaI (A>G) polymorphism allele or genotype distributions of hip fracture patients and controls. We also found no obvious association between the XbaI polymorphism and hip fracture in any of the racial or gender subgroups. Conclusion Our findings show that the ESR1 PvuII T allele may increase the risk of hip fracture and that the XbaI polymorphism is not associated with hip fracture.
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Affiliation(s)
- Li Tang
- Department of Orthopedics, Jintan Hospital, Jiangsu University, Changzhou, China
- * E-mail:
| | - Guo-Lin Cheng
- Department of Orthopedics, Jintan Hospital, Jiangsu University, Changzhou, China
| | - Zhong-Hua Xu
- Department of Orthopedics, Jintan Hospital, Jiangsu University, Changzhou, China
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17
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Genetic variants in hormone-related genes and risk of breast cancer. PLoS One 2013; 8:e69367. [PMID: 23935996 PMCID: PMC3720532 DOI: 10.1371/journal.pone.0069367] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 06/07/2013] [Indexed: 11/19/2022] Open
Abstract
Sex hormones play a key role in the development of breast cancer. Certain polymorphic variants (SNPs and repeat polymorphisms) in hormone-related genes are associated with sex hormone levels. However, the relationship observed between these genetic variants and breast cancer risk has been inconsistent. We conducted a case-control study nested within two prospective cohorts to assess the relationship between specific genetic variants in hormone-related genes and breast cancer risk. In total, 1164 cases and 2111 individually-matched controls were included in the study. We did not observe an association between potential functional genetic polymorphisms in the estrogen pathway, SHBG rs6259, ESR1 rs2234693, CYP19 rs10046 and rs4775936, and UGT1A1 rs8175347, or the progesterone pathway, PGR rs1042838, with the risk of breast cancer. Our results suggest that these genetic variants do not have a strong effect on breast cancer risk.
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18
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Li LW, Xu L. Menopausal status modifies breast cancer risk associated with ESR1 PvuII and XbaI polymorphisms in Asian women: a HuGE review and meta-analysis. Asian Pac J Cancer Prev 2013; 13:5105-11. [PMID: 23244119 DOI: 10.7314/apjcp.2012.13.10.5105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Published data on the association between single nucleotide polymorphisms (SNPs) in the ESR1 gene and breast cancer susceptibility are inconclusive or controversial. The aim of this Human Genome Epidemiology (HuGE) review and meta-analysis was to derive a more precise estimation of this relationship. METHODS A literature search of Pubmed, Embase, Web of science and CBM databases was conducted from inception through September 1 th, 2012. Crude odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of association. RESULTS A total of five studies including 1,678 breast cancer cases and 1,678 general population controls in Asian populations were involved in this meta-analysis. When all the eligible studies were pooled into the meta-analysis, the higher transcriptional activity variant allele T of ESR1 PvuII (C>T) (rs2234693) in pre-menopausal breast cancer women showed a significant relation to increased risk (OR = 1.13, 95%CI: 1.01-1.28, P = 0.040) in contrast to their post-menopausal counterparts which showed non-significant increased risk (OR = 1.01, 95%CI: 0.87-1.18, P = 0.858). Nevertheless, no significant association between ESR1 XbaI (A>G) (rs9340799) polymorphism and the risk of breast cancer was observed in pre-menopausal and post-menopausal individuals. CONCLUSION Based on a homogeneous Asian population, results from the current meta-analysis indicates that the ESR1 PvuII (C>T) polymorphism places pre-menopausal breast cancer women at risk for breast cancer, while ESR1 XbaI (A>G) polymorphism is not likely to predict the risk of breast cancer.
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Affiliation(s)
- Li-Wen Li
- School of Public Health, Shanghai Jiaotong University, Shanghai, China
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Genetic polymorphims of estrogen receptor alpha -397 PvuII (T>C) and -351 XbaI (A>G) in a portuguese population: prevalence and relation with breast cancer susceptibility. Mol Biol Rep 2013; 40:5093-103. [PMID: 23666105 DOI: 10.1007/s11033-013-2611-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Accepted: 04/30/2013] [Indexed: 10/26/2022]
Abstract
Estrogen receptor alpha (ERα), that mediates the biologic effects of estrogen in estrogen-sensitive tissues like breast, is genetically polymorphic. To evaluate the association between -397 PvuII (T>C) and -351 XbaI (A>G) restriction fragment length polymorphisms (RFLPs) in intron 1 of ERα gene and susceptibility of breast cancer, we undertook a case-control study in BRCA1 185delAG and 5382insC/BRCA2 6174delT negative Portuguese women. The study population consisted of 107 patients with histological diagnosis of breast cancer and 121 women with no history of breast cancer. Genomic DNA was extracted from blood samples and genotyping analyses were performed by PCR-RFLP. XbaI polymorphism was associated with a significant reduced risk of breast cancer for carriers of the x allele in homozygozity (OR 0.178; 95% CI 0.070-0.456; P<0.001) or heterozigozity (OR 0.223; 95% CI 0.089-0.561; P=0.001). The PvuII polymorphism was associated with a non-significantly reduced risk. The combined analysis of PvuII and XbaI polymorphisms revealed none synergistic effect of the two genotypes, except for simultaneous carriers of pp and xx genotypes, that have a reduced risk of breast cancer (OR 0.226; 95% CI 0.049-1.035; P=0.044). The combination of PvuII and XbaI genotypes into haplotypes showed that carriers of two copies of the px (ppxx) haplotype had a reduced risk of breast cancer (OR 0.405; 95% CI 0.194-0.843; P=0.014), compared with PX (PPXX+PPXx+PpXX+PpXx) haplotypes. PvuII and XbaI polymorphisms were in linkage disequilibrium both in cases (D=0.044, r2=0.049, X2=5.216, P=0.022) and controls (D=0.090, r2=0.139, X2=16.819, P<0.001), but not in the entire sample population analyzed as a whole (D=0.087, r2=0.0076, X2=1.733, P=0.188). In conclusion, in this case-control study we found that ERα gene XbaI polymorphism may modify individual susceptibility for breast cancer in this population.
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Tang LY, Chen LJ, Qi ML, Su Y, Su FX, Lin Y, Wang KP, Jia WH, Zhuang ZX, Ren ZF. Effects of passive smoking on breast cancer risk in pre/post-menopausal women as modified by polymorphisms of PARP1 and ESR1. Gene 2013; 524:84-9. [PMID: 23644255 DOI: 10.1016/j.gene.2013.04.064] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 04/24/2013] [Accepted: 04/25/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVES The association between passive smoking and breast cancer risk differs in pre- and post-menopausal women. We aimed to explore the modification effects of PARP1 rs1136410 and ESR1 rs2234693 on the association between passive smoking and breast cancer risk among pre- and post-menopausal women. DESIGN AND METHODS A case-control study of 839 breast cancer cases and 863 controls was conducted. The gene-environment interactions were tested after adjusting for potential breast cancer risk factors with unconditional logistic regression models. RESULTS We found that the effect of passive smoking was modified by the genotypes in both pre- and post-menopausal women, but in opposite directions. The combination of the TC/CC genotypes of ESR1 rs2234693 and passive smoking significantly increased the risk of breast cancer [OR (95%CI): 2.06 (1.39-3.05)] in pre-menopausal women. A significant association was observed between TT genotype and passive smoking [OR (95%CI): 2.40 (1.27-4.53)] in postmenopausal women. For PARP1 rs1136410, similar differential associations were observed, but the interactions were not significant. CONCLUSIONS These results imply that the risk of breast cancer from passive smoking may be influenced by genetic factors, and that the association may differ depending on menopausal status.
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Affiliation(s)
- Lu-Ying Tang
- The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
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Abbasi S, Nouri M, Azimi C. Estrogen receptor genes variations and breast cancer risk in Iran. Int J Clin Exp Med 2012; 5:332-341. [PMID: 22993654 PMCID: PMC3443893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 06/21/2012] [Indexed: 06/01/2023]
Abstract
Evidence suggests that alterations in estrogen signaling pathways, including estrogen receptor α (ER-α) and estrogen receptor β (ER-β) occur during breast cancer development. ER-α and ER-β genes polymorphisms have been found to be associated with breast cancer and clinical features of the disease in the western countries. In the current study, we evaluated the hypothesis that certain sequence variants of the ER-α and ER-β genes are associated with an additively increased risk for breast cancer in Iranian women breast cancer patients. The genes were scanned in 150 Iranian patients with newly diagnosed invasive breast tumors and in healthy control individuals by PCR single-strand conformation polymorphism (SSCP) method. Three single nucleotide polymorphisms (SNPs) in codon10 (TCT→TCC), codon 352 (CCG→CCC) and codon 594 (ACG→ACA) in ER-α gene and one SNP codon 392 (CTC→CTG) in ER-β were revealed have additive effects in developing breast cancer and LN metastases. Also, SNP in codon 392 of estrogen receptor-β gene is more effective (threefold) than those SNPs in codons 10, 325, 594 of estrogen receptor-α gene in developing LN metastases in breast cancer patients. SNPs in estrogen receptor α and β have additive effects in increasing risk for developing breast cancer with LN metastases among Iranian women breast cancer patients.
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Affiliation(s)
- Sakineh Abbasi
- Department of Medical Biotechnology, School of Allied Medical Sciences, Tehran University of Medical Sciences Iran.
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Microsatellites in the estrogen receptor (ESR1, ESR2) and androgen receptor (AR) genes and breast cancer risk in African American and Nigerian women. PLoS One 2012; 7:e40494. [PMID: 22792352 PMCID: PMC3394707 DOI: 10.1371/journal.pone.0040494] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 06/08/2012] [Indexed: 01/02/2023] Open
Abstract
Genetic variants in hormone receptor genes may be crucial predisposing factors for breast cancer, and microsatellites in the estrogen receptor (ESR1, ESR2) and androgen receptor (AR) genes have been suggested to play a role. We studied 258 African-American (AA) women with breast cancer and 259 hospital-based controls, as well as 349 Nigerian (NG) female breast cancer patients and 296 community controls. Three microsatellites, ESR1_TA, ESR2_CA and AR_CAG, in the ESR1, ESR2 and AR genes, respectively, were genotyped. Their repeat lengths were then analyzed as continuous and dichotomous variables. Analyses of continuous variables showed no association with breast cancer risk in either AA or NG at ESR1_TA; AA cases had shorter repeats in the long allele of ESR2_CA than AA controls (Mann-Whitney P= 0.036; logistic regression P = 0.04, OR= 0.91, 95% CI 0.83-1.00), whereas NG patients had longer repeats in the short allele than NG controls (Mann-Whitney P= 0.0018; logistic regression P= 0.04, OR= 1.06, 95% CI 1.00-1.11); and AA cases carried longer repeats in the short allele of AR_CAG than AA controls (Mann-Whitney P= 0.038; logistic regression P = 0.03, OR= 1.08, 95% CI 1.01-1.15). When allele sizes were categorized as dichotomous variables, we discovered that women with two long alleles of ESR2_CA had increased risk of breast cancer (OR = 1.38, 95% CI 1.10-1.74; P = 0.006). This is the first study to investigate these three microsatellites in hormonal receptor genes in relation to breast cancer risk in an indigenous African population. After adjusting for multiple-testing, our findings suggest that ESR2_CA is associated with breast cancer risk in Nigerian women, whereas ESR1_TA and AR_CAG seem to have no association with the disease among African American or Nigerian women.
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Current world literature. Curr Opin Endocrinol Diabetes Obes 2012; 19:233-47. [PMID: 22531108 DOI: 10.1097/med.0b013e3283542fb3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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