The regression analysis demonstrated a significant association between the SKA2 hypomethylation and current suicidal thoughts and behaviors (β = 0.27, p = 0.014); however, the SKA2 methylation was not significantly associated with current or lifetime PTSD severity scores (|βs| < 0.05, p ≥ 0.66). The gene discussed is SKA2; the disease is post-traumatic stress disorder.