CCL20 and major depressive disorder: Partial correlations for CCL20 and antipsychotic equivalents in the SZ group (SZ: r(s) = 0.202, p = 0.218; MDD: (s) =  − 0.432, p = 0.011) and for TRAIL and antidepressant equivalents (SZ: r(s) = 0.004, p = 0.979; MDD: (s) = − 0.090, p = 0.612) were not significant.