ATF6 and major depressive disorder: In the No PTSD control group, correlations between biomarkers and CECS (not taking into account the correlations within biomarker parameters or within CECS scores) scores are generally weak, with the strongest positive association observed between ATF6 and CECS Depression (ρ = 0.425), inferring that higher ATF6 levels may be linked to increased suppression of depressive emotions in controls, though this correlation does not reach statistical significance after the Bonferroni adjustment (adjusted p = 0.006 for 8 comparisons per group).