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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

TYK2 rs34536443 polymorphism is associated with a decreased susceptibility to endometriosis-related infertility

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Peluso, Carla [1] ; Christofolini, Denise M. [1] ; Goldman, Cecilia S. [1] ; Mafra, Fernanda A. [1] ; Cavalcanti, Viviane [1] ; Barbosa, Caio P. [1] ; Bianco, Bianca [1]
Total Authors: 7
[1] Fac Med Santo Andre, Human Reprod & Genet Ctr, Dept Gynecol & Obstet, Sao Caetano Do Sul Cty, Santo Andre - Brazil
Total Affiliations: 1
Document type: Journal article
Source: HUMAN IMMUNOLOGY; v. 74, n. 1, p. 93-97, JAN 2013.
Web of Science Citations: 8

Introduction: Tyrosine kinase 2 gene (TYK2) is part of the janus kinase (JAK) that binds to the type I interferon-a receptor (IFNAR) on the cell surface of IFN-producing cells, and have crucial importance in the etiology of autoimmune and inflammatory diseases. Many polymorphisms of the TYK2 gene have been identified, and recently, a number of case-control studies were conducted to investigate the association of these polymorphisms with autoimmune and inflammatory diseases, with conflicting results. Based on these observations, we hypothesized that the TYK2 polymorphisms (rs34536443, rs2304256, rs280523, rs12720270 and rs12720356) might be involved in the pathogenesis of endometriosis and/or infertility. Methods: Genetic association study comprising 275 infertile women with endometriosis, 92 women with idiopathic infertility and 307 fertile women as controls. TYK2 polymorphisms were identified by TaqMan PCR. Genotype distribution, allele frequency and haplotype analysis of the TYK2 polymorphisms were performed. A p-value <0.05 was considered significant. Results: Single-marker analysis revealed that TYK2 rs34536443 was significantly associated with protection against endometriosis-related infertility, especially in moderate/severe disease (p = 0.002; OR = 0.24, 95% IC = 0.09-0.62). No difference was found considering the infertile group without endometriosis. No associations were found considering rs2304256, rs280523, rs12720270 and rs12720356 either for endometriosis-related infertility group or idiopathic infertility group. Haplotype analysis of five TYK2 polymorphisms identified a haplotype ``CTATG{''} associated with protection against endometriosis-related infertility, especially in moderate/severe disease (p = 0.027). Conclusion: This is the first study to report an association between TYK2 polymorphisms and endometriosis and/or infertility. These findings require replication in other populations but suggest the TYK2 rs34536443 polymorphisms and ``CTATG{''} haplotype can be associated with a decreased susceptibility to endometriosis-related infertility in Brazilian women. (C) 2012 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 12/00566-1 - Genetic variants in codificants regions of the TYK2 gene as a risk factor for endometriosis
Grantee:Cecília Schwartzman Goldman
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 11/15045-4 - Evaluation of Amh and AMHR2 gene polymorphisms in infertile women and its correlation with of assisted reproduction outcomes
Grantee:Carla Peluso de Paiva
Support Opportunities: Scholarships in Brazil - Master