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MALAT1 Genomic Variants and Risk of Multiple Sclerosis

ABSTRACT Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is a long noncoding RNA (lncRNA) with a possible role in the regulation of immune responses. A previous study has demonstrated down-regulation of this lncRNA in multiple sclerosis (MS) patients. In the current study, we genotyped two MALAT1 single nucleotide polymorphisms (SNPs) in 428 Iranian MS patients and 505 healthy subjects. The G allele of the rs619586 was significantly under-represented in MS patients compared with controls (OR (95% CI) = 0.65 (0.46–0.92), adjusted P value = 0.03). This SNP was associated with lower MS risk in dominant model (OR (95% CI) = 0.63 (0.43–0.91), adjusted P value = 0.03). The rs3200401 was not associated with MS risk in any inheritance model. Moreover, the A T haplotype (rs619586 and rs3200401, respectively) within MALAT1 was associated with MS risk. The current study provides additional evidences for contribution of MALAT1 in the pathogenesis of MS.