ATF6 and post-traumatic stress disorder: A similar pattern held for IRE1, pERK, and ATF6, with the ≤5y group showing the highest levels—1608.0 pg/mL for IRE1 (IQR 1348.0–1987.0), 22.4 ng/L for pERK (IQR 20.2–24.2), and 24.0 ng/L for ATF6 (IQR 15.9–28.3)—compared to the >5y group (520.9, 7.5, and 7.2, respectively) and the No PTSD group (232.3, 3.5, and 3.1).