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Ayesh BM, Al-Masri R, Abed AA. CHRNA5 and CHRNA3 polymorphism and lung cancer susceptibility in Palestinian population. BMC Res Notes 2018; 11:218. [PMID: 29609626 PMCID: PMC5879790 DOI: 10.1186/s13104-018-3310-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 03/20/2018] [Indexed: 01/08/2023] Open
Abstract
Objective The genetic polymorphism (rs16969968 in CHRNA5, and rs1051730 in CHRNA3 genes) were recently shown to be associated with risk of LC. The aim of this study is to elucidate whether they predispose Palestinian individuals to lung cancer, and how is this related to smoking. Results Frequency of the rs16969968-A allele was significantly higher in the case group (36.7%) than in normal controls (17.5%; P = 0.022; OR = 6.83 for AA and 2.81 for AG genotypes). The frequency of rs1051730-T allele was also significantly higher in the case group (46.7%) than in the control group (22.5%; P = 0.001; OR = 2.20 for TC and 13.22 for TT genotypes). Frequency of rs16969968-A allele was higher in smokers (29.1%) than nonsmokers (15.7%) regardless of lung cancer; similarly, frequency of rs1051730-T allele was also higher in smokers than in smokers (46.7% vs 22.5%, respectively). The higher the proportion of the risk allele (rs16969968-A and rs1051730-T), the higher the mean number of daily consumed cigarettes (P = 0.006). Carrying rs16969968-A and/or rs1051730-T alleles results in an increased risk to lung cancer probably by increasing the individual’s tendency for heavy smoking. The allelic frequency of the rs16969968-A and rs1051730-T alleles among normal Palestinian controls is similar to different populations worldwide. Electronic supplementary material The online version of this article (10.1186/s13104-018-3310-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Basim Mohammad Ayesh
- Department of Laboratory Medical Sciences, Alaqsa University, Gaza, Palestine, P.O. Box 4051.
| | - Rami Al-Masri
- Central Laboratory, Ministry of Health, Gaza, Palestine
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Han Z, Jiang Q, Zhang T, Wu X, Ma R, Wang J, Bai Y, Wang R, Tan R, Wang Y. Analyzing large-scale samples confirms the association between the rs1051730 polymorphism and lung cancer susceptibility. Sci Rep 2015; 5:15642. [PMID: 26508385 PMCID: PMC4623668 DOI: 10.1038/srep15642] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 09/24/2015] [Indexed: 01/08/2023] Open
Abstract
The early genome-wide association studies (GWAS) found a significant association between lung cancer and rs1051730 (15q25) polymorphism. However, the subsequent studies reported consistent and inconsistent results in different populations. Three meta-analysis studies were thus performed to reevaluate the association. But their results remain inconsistent. After that, some new GWAS studies reported conflicting results again. We think that the divergence of these results may be due to small-scale samples or heterogeneity among different populations. Therefore, we reevaluated the association by collecting more samples (N = 33,617 cases and 116,639 controls) from 31 studies, which incorporate 8 new studies and 23 previous studies used by one or more of the three meta-analysis studies. We observed a significant association between lung cancer and rs1051730 in pooled population by using allele (OR = 1.30, 95% CI = 1.27–1.34, P < 0.0001), dominant (OR = 1.41, 95% CI = 1.29–1.55, P < 0.0001), recessive (OR = 1.53, 95% CI = 1.42–1.65, P < 0.0001) and additive (OR = 1.75, 95% CI = 1.61–1.90, P < 0.0001) models. Through the subgroup analysis, we observed a significant heterogeneity only in East Asian population (P = 0.006, I2 = 66.9%), and the association is significant in all subgroups (OR = 1.2976, 95% CI = 1.2622–1.3339 (European ancestry), OR = 1.5025, 95% CI = 1.2465–1.8110 (African), OR = 1.7818, 95% CI = 1.3915–2.2815 (East Asian), P < 0.0001). We believe that these results will contribute to understanding the genetic mechanism of lung cancer.
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Affiliation(s)
- Zhijie Han
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Qinghua Jiang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Tianjiao Zhang
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Xiaoliang Wu
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Rui Ma
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Jixuan Wang
- School of Software, Harbin Institute of Technology, Harbin, 150001, China
| | - Yang Bai
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Rongjie Wang
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Renjie Tan
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Yadong Wang
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China
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