EZH2 and multiple sclerosis: In our study, when expression levels for these two microRNAs were determined in PBMC from a subgroup of untreated multiple sclerosis patients and controls, miR-124 but not miR-155 was significantly upregulated in patients, suggesting a potential functional relationship between decreased EZH2 mRNA expression levels and miR-124 upregulation in patients with multiple sclerosis.