Genetic Polymorphisms Associated with Endometriosis in Pakistani Women

Irfana Liaqat, Nusrat Jahan, Khalid P. Lone, A.J. Pakstis, Hugh S. Taylor
In: Journal of Endometriosis and Pelvic Pain Disorders · 2013 · vol. 5(4) , pp. 134–143 · doi:10.5301/je.5000165 · W2000253995
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This study found associations between specific single nucleotide polymorphisms in the IL10, ESR2, and PGR genes and endometriosis in Pakistani women, while no association was found for ESR1.

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Abstract

Background Endometriosis is a common disease that causes pain and infertility. The heritable predisposition toward endometriosis motivates an interest to identify the genes and genomic variants involved in the pathogenesis of endometriosis. Both genetic and environmental factors contribute to this disease. Here we investigated in Pakistani women the association of endometriosis and single nucleotide polymorphisms (SNP) in genes previously identified in the development of this disease. Methods DNA samples from 52 genetically unrelated endometriosis subjects with endometriosis and 52 randomly selected controls were analyzed by direct sequencing to determine polymorphisms in four genes. These included estrogen receptor alpha (ESR1) (rs2234693 C/T, rs9340799 G/A SNP), estrogen receptor beta (ESR2) (rs4986938 G/A SNP), progesterone receptor (PGR) (rs1042838 G/T, rs10895068 G/A SNPs) and interleukin 10 (IL10) (rs1800871 C/T, rs1800872 C/A and rs1800896 G/A SNPs). Results The allele A at −592, T at −819 and G at −1080 of IL10 and all of the SNPs studied at ESR2 and PGR show strong, statistically significant associations with the disease. However, the genetic variation at ESR1 was distributed similarly among cases and control groups. Conclusion These findings suggest that the functional promoter polymorphism of the IL10 gene, identified by the “ATG” genotype, may contribute to the risk of endometriosis. Genetic variants of ESR2 and PGR gene may also be a risk factor as well as influence the fertility status of patients with endometriosis.

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endometriosisinfertility

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