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Replication study of GWAS risk loci in Greek multiple sclerosis patients.

TitleReplication study of GWAS risk loci in Greek multiple sclerosis patients.
Publication TypeJournal Article
Year of Publication2019
AuthorsHadjigeorgiou, G. M., Kountra P-M., Koutsis G., Tsimourtou V., Siokas V., Dardioti M., Rikos D., Marogianni C., Aloizou A-M., Karadima G., Ralli S., Grigoriadis N., Bogdanos D., Panas M., & Dardiotis E.
JournalNeurol Sci
Date Published2019 Feb
KeywordsAdult, Aged, Cohort Studies, European Continental Ancestry Group, Female, Genetic Predisposition to Disease, Genome-Wide Association Study, Greece, Humans, Male, Meta-Analysis as Topic, Middle Aged, Multiple Sclerosis, Polymorphism, Single Nucleotide, Young Adult

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.

Alternate JournalNeurol Sci
PubMed ID30361804


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