CASP9 and post-traumatic stress disorder: Reflection of physiological and psychological balance: A balanced state, as observed in the No PTSD group, is marked by low CASP-9 levels (0.08–4.95 ng/mL) and high coping scores (Problem-Focused: 28–32/32; Emotion-Focused: 40–45/48; and Overall: 80–89/112), with low avoidance (9–15/32), indicating minimal apoptotic stress and robust adaptive coping.