NDUFS7 and major depressive disorder: Whole blood samples were collected for RNA-seq and bioinformatics analysis.<h4>Results</h4>Multivariate linear regression analysis revealed that the NADH dehydrogenase iron-sulfur protein 7 (<i>NDUFS7</i>) and C-X-C motif chemokine ligand 10 (<i>CXCL10</i>) were important predictive factors distinguishing the MDD group from the NSSI + SA group.