NLGN2 and major depressive disorder: The eQTM data indicates that methylation at the identified CpGs is in correlation with expression of the genes that have been already linked to neurological function and disorders, such as HOTAIRM1 - dopamine neuron differentiation [78], NLGN2 - depression [79], ACSF3 [80] and HOXA1 [81] - autism spectrum disorders, KLHDC7B - hearing loss [82] and depression [22].