MAOA and major depressive disorder: With the majority of imaging genetics studies conducted on MAOA uVNTR polymorphism reporting its genotype relevance to OFC structure in healthy controls, Won et al. [34] compared this variant effect on OFC thickness of Korean female MDD patients (medication-naïve; HAM-D: 20.96 ± 5.09) and healthy controls (HAM-D: 2.41 ± 2.20).