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Published in: Neurological Sciences 2/2019

01-02-2019 | Original Article

Replication study of GWAS risk loci in Greek multiple sclerosis patients

Authors: Georgios M. Hadjigeorgiou, Persia-Maria Kountra, Georgios Koutsis, Vana Tsimourtou, Vasileios Siokas, Maria Dardioti, Dimitrios Rikos, Chrysoula Marogianni, Athina-Maria Aloizou, Georgia Karadima, Styliani Ralli, Nikolaos Grigoriadis, Dimitrios Bogdanos, Marios Panas, Efthimios Dardiotis

Published in: Neurological Sciences | Issue 2/2019

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Abstract

Objectives

To validate in an ethnically homogeneous Greek multiple sclerosis (MS) cohort, genetic risk factors for the disease, identified through a number of previous multi-ethnic genome-wide association studies (GWAS).

Methods

A total of 1228 MS cases and 1014 controls were recruited in the study, from 3 MS centers in Greece. We genotyped 35 susceptibility SNPs that emerged from previous GWAS or meta-analyses of GWAS. Allele and genotype single locus regression analysis, adjusted for gender and site, was performed. Permutation testing was applied to all analyses.

Results

Six polymorphisms reached statistical significance (permutation p value < 0.05). In particular, rs2760524 of LOC105371664, near RGS1 (permutation p value 0.001), rs3129889 of HLA-DRA, near HLA-DRB1 (permutation p value < 1.00e-04), rs1738074 of TAGAP (permutation p value 0.007), rs703842 of METTL1/CYP27B1 (permutation p value 0.008), rs9596270 of DLEU1 (permutation p value < 1.00e-04), and rs17445836 of LincRNA, near IRF8 (permutation p value 0.001) were identified as susceptibility risk factors in our group.

Conclusion

The current study replicated a number of GWAS susceptibility SNPs, which implies that some similarities between the examined Greek population and the MS genetic architecture of the GWAS populations do exist.
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36.
Metadata
Title
Replication study of GWAS risk loci in Greek multiple sclerosis patients
Authors
Georgios M. Hadjigeorgiou
Persia-Maria Kountra
Georgios Koutsis
Vana Tsimourtou
Vasileios Siokas
Maria Dardioti
Dimitrios Rikos
Chrysoula Marogianni
Athina-Maria Aloizou
Georgia Karadima
Styliani Ralli
Nikolaos Grigoriadis
Dimitrios Bogdanos
Marios Panas
Efthimios Dardiotis
Publication date
01-02-2019
Publisher
Springer International Publishing
Published in
Neurological Sciences / Issue 2/2019
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-018-3617-6

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