Genetic variations of MUC17 are associated with endometriosis development and related infertility

Ching-Wen Yang, Cherry Yin-Yi Chang, Ming-Tsung Lai, Hui-Wen Chang, Cheng-Chan Lu, Cheng‐Chan Lu, Yi Chen, Chih-Mei Chen, Shan‐Chih Lee, Shan-Chih Lee, Pei-Wen Tsai, Su-Han Yang, Shuichan Yang, Chih‐Hung Lin, Chih-Hung Lin, Jim Jinn‐Chyuan Sheu, Jim Jinn-Chyuan Sheu, Fuu-Jen Tsai, Fuu‐Jen Tsai
BMC medical genetics · 2015 · vol. 16(1) , pp. 60 · doi:10.1186/s12881-015-0209-7 · PMID:26285705 · W1954685972
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Abstract

BACKGROUND: Genetic alterations of mucin genes, such as MUC2 and MUC4, were previously identified to be associated with endometriosis and related infertility. Additionally, gene expression profiling has confirmed MUC17 to be overexpressed in mucinous ovarian carcinoma; however, its associated risk for endometriosis remains unclear. This study was focused on the potential impact of genetic variations in MUC17 on endometriosis development and associated clinical features. METHODS: The study subjects included 189 female Taiwanese patients with pathology-proven endometriosis and 191 healthy Taiwanese women as controls. Five single-nucleotide polymorphisms (rs4729645, rs10953316, rs74974199, rs4729655, and rs4729656) within the MUC17 gene were selected and genotyped using the Taqman genotyping assay to examine the allele frequency and genotype distributions of MUC17 polymorphisms. RESULTS: Genotyping revealed that the A allele at rs10953316 in MUC17 was a protective genetic factor in endometriosis development (p = 0.008; OR = 0.53; 95% CI: 0.36-0.79). Genetic variation of rs4729655 protected patients against endometriosis-induced infertility, but was associated with a higher cancer antigen 125 (CA125) level. Base-pairing analysis, called MaxExpect, predicted an additional loop in the mRNA structure caused by rs10953316 polymorphism, possibly influencing ribosome sliding and translation efficiency. Such predictions were confirmed by immunohistochemistry that patients with AA genotype at rs10953316 showed low MUC17 levels in their endometrium, patients with GA genotype showed moderate levels, and strong staining could be found in patients with GG genotype. CONCLUSIONS: MUC17 polymorphisms are involved in endometriosis development and the associated infertility in the Taiwanese population.

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Condition tags

mesh:D004715endometriosisinfertility

MeSH descriptors

Endometriosis Endometriosis Genetic Variation Infertility, Female Mucins Endometriosis Female Gene Frequency Genotyping Techniques Humans Immunohistochemistry Infertility, Female Mucins Odds Ratio Polymorphism, Single Nucleotide Polymorphism, Single Nucleotide Taiwan

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