TNF and major depressive disorder: Fisher’s r-to-z transformations indicated that the relationship between miR-93 expression and inflammatory/metabolic markers was significantly more negative in MDD than HC for IL-1ra (z = −2.15, p = 0.016), IL-6 (z = −1.80, p = 0.036), and TNF (z = −2.15, p = 0.016), and trending more negative in MDD than HC for leptin (z = −1.45, p = 0.074).