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Wu H, Wan S, Qu M, Ren B, Liu L, Shen H. The Relationship between PTPN22 R620W Polymorphisms and the Susceptibility to Autoimmune Thyroid Diseases: An Updated Meta-analysis. Immunol Invest 2020; 51:438-451. [PMID: 33103521 DOI: 10.1080/08820139.2020.1837154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The protein tyrosine phosphatase non-receptor 22 (PTPN22) R620W polymorphism has been related to susceptibility to autoimmune thyroid disease (AITD) with inconsistent results. Therefore, this meta-analysis was designed to assess a more accurate association between the PTPN22 R620W polymorphism and AITD susceptibility. A systematic search of the EMBASE, PubMed, Web of Science, CBM, CNKI, and WanFang databases was performed to determine relevant publications. Statistical analyses of the odds ratios (ORs), 95% confidence intervals (CIs), and p values were performed using STATA software. Our meta-analysis included 18 separate studies comprised of 4,726 cases and 4,220 controls. In the allele and all genetic models, PTPN22 R620W polymorphism and Graves' disease (GD) (allele model TvsC: OR = 1.573; 95% CI = 1.378-1.795; P < .001) and Hashimoto's thyroiditis (HT) (allele model TvsC: OR = 1.737; 95% CI = 1.230-2.454; P = .002) susceptibility was positively associated. A racial subgroup analysis showed that the T allele significantly increased AITD susceptibility in all genetic models involving Caucasians, but not in Asians. This meta-analysis showed that the PTPN22 R620W polymorphism is associated with the risk of GD and HT in the overall study population. In addition, the PTPN22 R620W polymorphism is associated with elevated AITD risk in Caucasians, but not in Asians.
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Affiliation(s)
- Huaiyong Wu
- Centre for Endemic Disease Control, Chinese Centre for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
| | - Siyuan Wan
- Centre for Endemic Disease Control, Chinese Centre for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China.,Department of Preventive Medicine, Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - Mengying Qu
- Centre for Endemic Disease Control, Chinese Centre for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
| | - Bingxuan Ren
- Centre for Endemic Disease Control, Chinese Centre for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
| | - Lixiang Liu
- Centre for Endemic Disease Control, Chinese Centre for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
| | - Hongmei Shen
- Centre for Endemic Disease Control, Chinese Centre for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang, China
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Fathima N, Narne P, Ishaq M. Association and gene-gene interaction analyses for polymorphic variants in CTLA-4 and FOXP3 genes: role in susceptibility to autoimmune thyroid disease. Endocrine 2019; 64:591-604. [PMID: 30771152 DOI: 10.1007/s12020-019-01859-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 02/05/2019] [Indexed: 12/13/2022]
Abstract
PURPOSE Polymorphic variants of cytotoxic T-lymphocyte antigen-4 (CTLA-4) and forkhead box protein P3 (FOXP3) genes are implicated in dysregulated immune homeostasis and autoimmune disorders. We analyzed the association between CTLA-4 rs231775 and FOXP3 rs3761548, rs3761549 polymorphisms and predisposition to autoimmune thyroid disease (AITD), inclusive of Hashimoto's thyroiditis (HT) and Graves' disease (GD) in South-Indian population. METHODS A total of 355 AITD subjects (comprising 275 HT and 80 GD) and 285 randomly selected age- and sex-matched control subjects were genotyped for the aforementioned polymorphisms by PCR-RFLP method. RESULTS The rs231775 "G" allele was preponderant in HT and GD subjects when compared with controls and exerted a dominant influence on the susceptibility to HT (p = 0.009) and GD (p = 0.02), respectively. There was no allelic association of rs3761548 and rs3761549 polymorphisms with AITD susceptibility, albeit a significant difference in genotype distribution with respect to rs3761549. Haplotype analysis revealed an increased frequency of rs3761548 "C"-rs3761549 "T" in HT and GD subjects, thereby associating it with disease predisposition (p = 0.03). Epistatic interaction analysis by multifactor dimensionality reduction approach revealed redundancy between CTLA-4 and FOXP3 genes in influencing the susceptibility to AITD. CONCLUSIONS The genetic variation in CTLA-4 gene with reference to rs231775 polymorphism contributes to an increased predisposition to HT and GD. Also, in conjunction with FOXP3 gene variants it seems to influence the susceptibility to HT and GD respectively. The significance of these findings in combination with antithyroid antibody screening could plausibly contribute towards meticulous case-finding for effective treatment of HT and GD.
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Affiliation(s)
- Nusrath Fathima
- Department of Genetics, Osmania University, Hyderabad, Telangana, India
| | - Parimala Narne
- Department of Biotechnology and Bioinformatics, University of Hyderabad, Hyderabad, Telangana, India.
| | - Mohammed Ishaq
- Department of Genetics, Osmania University, Hyderabad, Telangana, India.
- Salar-E-Millat, Research Centre for Cellular and Molecular Medicine, Princess Esra Hospital, Deccan College of Medical Sciences, Hyderabad, Telangana, India.
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Giordano P, Urbano F, Lassandro G, Bianchi FP, Tolva A, Saracco P, Russo G, Notarangelo LD, Gabelli M, Cesaro S, Wasniewska M, Faienza MF. Role of antithyroid autoimmunity as a predictive biomarker of chronic immune thrombocytopenia. Pediatr Blood Cancer 2019; 66:e27452. [PMID: 30270575 DOI: 10.1002/pbc.27452] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/29/2018] [Accepted: 08/20/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Immune thrombocytopenia (ITP) is an acquired immune-mediated disorder characterized by isolated thrombocytopenia. Pediatric ITP patients are prone to develop autoantibodies such as antithyroglobulin (TG) and antithyroperoxidase (TPO), even in the absence of clinical signs of autoimmune disease. The aim of this multicenter retrospective study was to evaluate (1) the prevalence of positivity of antithyroid antibodies (TPO and TG) in a large cohort of pediatric patients with chronic ITP; (2) the role of autoimmune thyroiditis as a prognostic factor for chronicity of ITP. PROCEDURE For this retrospective study, we collected data from patients diagnosed as affected by chronic ITP between 2011 and 2014 in six centers belonging to the Italian Association of Pediatric Haematology and Oncology (AIEOP). RESULTS From the analysis of data, we found a significantly higher prevalence of antithyroid antibodies in children with chronic ITP (11.6%) than in the pediatric population (1.2%-1.3%). No correlation has been found between the platelet count and the prevalence of positive antithyroid antibodies at any detection time of the study. CONCLUSIONS The results of our study demonstrated that (1) the prevalence of positivity for antithyroid antibodies (anti-TPO and anti-TG) in pediatric patients with chronic ITP results is significantly higher than in the pediatric population; (2) autoimmune thyroiditis does not seem to play a role as a prognostic factor for chronicity of ITP in pediatric patients.
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Affiliation(s)
- Paola Giordano
- Department of Biomedical Sciences and Human Oncology, University "A.Moro,", Bari, Italy
| | - Flavia Urbano
- Department of Biomedical Sciences and Human Oncology, University "A.Moro,", Bari, Italy
| | - Giuseppe Lassandro
- Department of Biomedical Sciences and Human Oncology, University "A.Moro,", Bari, Italy
| | | | - Alessandra Tolva
- Pediatric Onco-Hematology Unit, IRCCS Foundation, Policlinico San Matteo, Pavia, Italy
| | - Paola Saracco
- Pediatric Hematology, University Hospital Città della Salute e della Scienza, Torino, Italy
| | - Giovanna Russo
- Clinical and Experimental Medicine, Pediatric Hemato-Oncology Unit, University of Catania, Catania, Italy
| | | | - Maria Gabelli
- Pediatric Onco-Hematology Unit, University of Padova, Padova, Italy
| | - Simone Cesaro
- Pediatric Onco-Hematology Unit, Woman and Child Hospital, University of Verona, Verona, Italy
| | - Malgorzata Wasniewska
- Department of Human Pathology of Adulthood and Childhood, University of Messina, Messina, Italy
| | - Maria Felicia Faienza
- Department of Biomedical Sciences and Human Oncology, University "A.Moro,", Bari, Italy
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Hu Y, Xu K, Jiang L, Zhang L, Shi H, Cui D. Associations Between ThreeCTLA-4Polymorphisms and Hashimoto's Thyroiditis Risk: An Updated Meta-Analysis with Trial Sequential Analysis. Genet Test Mol Biomarkers 2018; 22:224-236. [PMID: 29461867 DOI: 10.1089/gtmb.2017.0243] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Yifang Hu
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University , Nanjing, China
| | - Kuanfeng Xu
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University , Nanjing, China
| | - Lin Jiang
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University , Nanjing, China
| | - Lijuan Zhang
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University , Nanjing, China
| | - He Shi
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University , Nanjing, China
| | - Dai Cui
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University , Nanjing, China
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Ting WH, Chien MN, Lo FS, Wang CH, Huang CY, Lin CL, Lin WS, Chang TY, Yang HW, Chen WF, Lien YP, Cheng BW, Lin CH, Chen CC, Wu YL, Hung CM, Li HJ, Chan CI, Lee YJ. Association of Cytotoxic T-Lymphocyte-Associated Protein 4 (CTLA4) Gene Polymorphisms with Autoimmune Thyroid Disease in Children and Adults: Case-Control Study. PLoS One 2016; 11:e0154394. [PMID: 27111218 PMCID: PMC4844099 DOI: 10.1371/journal.pone.0154394] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 04/11/2016] [Indexed: 11/18/2022] Open
Abstract
Autoimmune thyroid disease (AITD), including Graves disease (GD) and Hashimoto disease (HD), is an organ-specific autoimmune disease with a strong genetic component. Although the cytotoxic T-lymphocyte-associated protein 4 (CTLA4) polymorphism has been reported to be associated with AITD in adults, few studies have focused on children. The aim of our study was to investigate whether the CTLA4 polymorphisms, including -318C/T (rs5742909), +49A/G (rs231775), and CT60 (rs3087243), were associated with GD and HD in Han Chinese adults and children. We studied 289 adult GD, 265 pediatric GD, 229 pediatric HD patients, and 1058 healthy controls and then compared genotype, allele, carrier, and haplotype frequencies between patients and controls. We found that CTLA4 SNPs +49A/G and CT60 were associated with GD in adults and children. Allele G of +49A/G was significantly associated with GD in adults (odds ratio [OR], 1.50; 95% confidence interval [CI], 1.21–1.84; corrected P value [Pc] < 0.001) and children (OR, 1.42; 95% CI, 1.15–1.77; Pc = 0.002). Allele G of CT60 also significantly increased risk of GD in adults (OR, 1.63; 95% CI, 1.27–2.09; Pc < 0.001) and GD in children (OR, 1.58; 95% CI, 1.22–2.04; Pc < 0.001). Significant linkage disequilibrium was found between +49A/G and CT60 in GD and control subjects (D’ = 0.92). Our results showed that CTLA4 was associated with both GD and HD and played an equivalent role in both adult and pediatric GD in Han Chinese population.
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Affiliation(s)
- Wei-Hsin Ting
- Department of Pediatrics, MacKay Children’s Hospital, Taipei, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- MacKay Junior College of Medicine, Nursing and Management, New Taipei City, Taiwan
| | - Ming-Nan Chien
- Department of Endocrinology and Metabolism, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Institute of Mechatronic Engineering, National Taipei University of Technology, Taipei, Taiwan
- MacKay Junior College of Medicine, Nursing and Management, New Taipei City, Taiwan
| | - Fu-Sung Lo
- Department of Pediatrics, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan
- College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Chao-Hung Wang
- Department of Endocrinology and Metabolism, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chi-Yu Huang
- Department of Pediatrics, MacKay Children’s Hospital, Taipei, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Chiung-Ling Lin
- Department of Medical Research, MacKay Memorial Hospital Tamsui, New Taipei City, Taiwan
| | - Wen-Shan Lin
- Department of Medical Research, MacKay Memorial Hospital Tamsui, New Taipei City, Taiwan
| | - Tzu-Yang Chang
- Department of Medical Research, MacKay Memorial Hospital Tamsui, New Taipei City, Taiwan
| | - Horng-Woei Yang
- Department of Medical Research, MacKay Memorial Hospital Tamsui, New Taipei City, Taiwan
| | - Wei-Fang Chen
- Department of Medical Research, MacKay Memorial Hospital Tamsui, New Taipei City, Taiwan
| | - Ya-Ping Lien
- Department of Medical Research, MacKay Memorial Hospital Tamsui, New Taipei City, Taiwan
| | - Bi-Wen Cheng
- Department of Pediatrics, MacKay Memorial Hospital HsinChu, Hsin-Chu, Taiwan
| | - Chao-Hsu Lin
- Department of Pediatrics, MacKay Memorial Hospital HsinChu, Hsin-Chu, Taiwan
| | - Chia-Ching Chen
- Department of Pediatrics, Chiayi Christian Hospital, Chia-Yi, Taiwan
| | - Yi-Lei Wu
- Department of Pediatrics, Changhua Christian Hospital, Chang-Hua, Taiwan
| | - Chen-Mei Hung
- Department of Pediatrics, Hsinchu Cathay General Hospital, Hsin-Chu, Taiwan
| | - Hsin-Jung Li
- Department of Pediatrics, St. Martin De Porres Hospital, Chia-Yi, Taiwan
| | - Chon-In Chan
- Department of Pediatrics, MacKay Children’s Hospital, Taipei, Taiwan
| | - Yann-Jinn Lee
- Department of Pediatrics, MacKay Children’s Hospital, Taipei, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Medical Research, MacKay Memorial Hospital Tamsui, New Taipei City, Taiwan
- Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan
- * E-mail:
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Xue H, Yu X, Ma L, Song S, Li Y, Zhang L, Yang T, Liu H. The possible role of CD4⁺CD25(high)Foxp3⁺/CD4⁺IL-17A⁺ cell imbalance in the autoimmunity of patients with Hashimoto thyroiditis. Endocrine 2015; 50:665-73. [PMID: 25771887 DOI: 10.1007/s12020-015-0569-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 03/02/2015] [Indexed: 12/12/2022]
Abstract
Hashimoto thyroiditis (HT) is a prototypic organ-specific autoimmune thyroid disease, for which the exact etiology remains unclear. The aim of this study was to investigate dynamic changes in regulatory T cell (Treg) and T helper 17 cell (Th17) populations in patients with HT at different stages of thyroid dysfunction, as well as to analyze the possible correlation between the Treg/Th17 cell axis and autoimmune status in HT. We assessed thyroid function and autoantibody serology both in HT patients and in healthy controls (HCs) and divided HT patients into three subgroups according to thyroid function. We then determined the percentages of Treg and Th17 cells in peripheral blood mononuclear cells and analyzed mRNA expression of the Treg and Th17 cell-defining transcription factors Foxp3 and RORγt. In addition, serum levels of TGF-β and IL-17A were assessed. We found that the percentage of Treg cells, Foxp3 mRNA levels, and the ratio of Treg/Th17 cells were all significantly lower in HT patients, while Th17 cell percentages and RORγt mRNA levels were significantly higher. Interestingly, we also observed significant differences in these measurements between HT patient subgroups. Serum IL-17A levels were markedly increased in HT patients, while serum concentrations of TGF-β were lower, compared to HCs. The ratio of Treg/Th17 cells was negatively correlated with the levels of serum thyroperoxidase antibody, thyroglobulin antibody, and thyrotropin (TSH) in HT patients. Taken together, our data suggest that the balance between Treg and Th17 cells shifts in favor of Th17 cells during clinical progression of HT, which is negatively correlated with levels of thyroid-specific autoantibodies and TSH, implying that Treg/Th17 cell imbalance may contribute to thyroid damage in HT.
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Affiliation(s)
- Haibo Xue
- Department of Endocrinology and Metabolism, Binzhou Medical University Hospital, Binzhou, China
| | - Xiurong Yu
- International Office, Binzhou Medical University Hospital, Binzhou, China
| | - Lei Ma
- Department of Dermatology, Binzhou Medical University Hospital, No. 661 Second Huanghe Road, Binzhou, 256603, China.
| | - Shoujun Song
- Department of Endocrinology and Metabolism, Binzhou Medical University Hospital, Binzhou, China
| | - Yuanbin Li
- Department of Endocrinology and Metabolism, Shanxi Dayi Hospital, Taiyuan, China
| | - Li Zhang
- Department of Endocrinology and Metabolism, Binzhou Medical University Hospital, Binzhou, China
| | - Tingting Yang
- Department of Endocrinology and Metabolism, Binzhou Medical University Hospital, Binzhou, China
| | - Huan Liu
- Department of Endocrinology and Metabolism, Binzhou Medical University Hospital, Binzhou, China
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Andrioli M, Trimboli P, Maio D, Persani L, Minelli M. Systemic nickel allergic syndrome as an immune-mediated disease with an increased risk for thyroid autoimmunity. Endocrine 2015; 50:807-10. [PMID: 25795291 DOI: 10.1007/s12020-015-0581-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 03/14/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Massimiliano Andrioli
- EndocrinologiaOggi, V.le Somalia 33, 00199, Rome, Italy.
- Division of Endocrine and Metabolic Diseases, San Luca Hospital, Ospedale San Luca, IRCCS, Istituto Auxologico Italiano, P.le Brescia 20, 20149, Milan, Italy.
| | - Pierpaolo Trimboli
- Section of Endocrinology and Diabetology, Ospedale Israelitico of Rome, 00148, Rome, Italy
| | - Dominga Maio
- Division of Clinical Immunology and Allergology, Anthea Hospital, GVM Care & Research, Bari, Italy
| | - Luca Persani
- Division of Endocrine and Metabolic Diseases, San Luca Hospital, Ospedale San Luca, IRCCS, Istituto Auxologico Italiano, P.le Brescia 20, 20149, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, 20122, Milan, Italy
| | - Mauro Minelli
- Division of Clinical Immunology and Allergology, Anthea Hospital, GVM Care & Research, Bari, Italy
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Minhas S, Bhalla S, Shokeen Y, Jauhri M, Saxena R, Verma IC, Aggarwal S. Lack of any association of the CTLA-4 +49 G/A polymorphism with breast cancer risk in a North Indian population. Asian Pac J Cancer Prev 2014; 15:2035-8. [PMID: 24716930 DOI: 10.7314/apjcp.2014.15.5.2035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Cytotoxic T-lymphocyte antigen 4 (CTLA-4) is an important protein involved in the regulation of the immune system. The +49 G/A polymorphism is the only genetic variation in the CTLA-4 gene that causes an amino acid change in the resulting protein. It is therefore the most extensively studied polymorphism among all CTLA-4 genetic variants and contributions to increasing the likelihood of developing cancer are well known in various populations, especially Asians. However, there have hiterto been no data with respect to the effect of this polymorphism on breast cancer susceptibility in our North Indian population. We therefore assayed genomic DNA of 250 breast cancer subjects and an equal number of age-, sex- and ethnicity-matched healthy controls for the CTLA-4 +49 G/A polymorphism but no significant differences in either the gene or allele frequency were found. Thus the CTLA-4 +49 G/A polymorphism may be associated with breast cancer in other Asians, but it appears to have no such effect in North Indians. The study also highlights the importance of conducting genetic association studies in different ethnic populations.
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Affiliation(s)
- Sachin Minhas
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India E-mail :
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He J, Wang J, Wang D, Dai S, Yv T, Chen P, Ma R, Diao C, Lv G. Association between CTLA-4 genetic polymorphisms and susceptibility to osteosarcoma in Chinese Han population. Endocrine 2014; 45:325-30. [PMID: 24078408 DOI: 10.1007/s12020-013-0050-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Accepted: 08/27/2013] [Indexed: 12/17/2022]
Abstract
Osteosarcoma (OS) is the most common malignant primary bone tumor in the world. The cytotoxic T-lymphocyte antigen-4 gene (CTLA-4) is an important candidate gene for influencing the development of OS. This study aimed to investigate the potential association of CTLA-4 genetic polymorphisms with OS risk in Chinese Han population. A total of 415 OS patients and 431 healthy controls were enrolled in this study. The created restriction site-polymerase chain reaction (CRS-PCR) and DNA sequencing methods were used to detect the genotyping of CTLA-4 c.75G[C and c.326G[A genetic polymorphisms. We observed that the genotypes/alleles of c.75G[C and c.326G[A genetic polymorphisms were statistically associated with the increased risk of OS (for c.75G[C, CC versus (vs.) GG: OR 1.72, 95% CI 1.09–2.74; C vs. G: OR 1.30, 95% CI 1.06–1.60; for c.326G[A, AA vs. GG: OR 2.12, 95% CI 1.31–3.42; A vs. G: OR 1.31, 95% CI 1.07–1.61). The allele-C/genotype-CC of c.75G[C and allele-A/genotype-AA of c.326G[A may contribute to OS susceptibility. These data indicate that CTLA-4 genetic polymorphisms are potentially related to OS risk in Chinese Han population, and might be used as molecular markers for evaluating the risk of OS.
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