CDC42BPB and post-traumatic stress disorder: Specifically, PTSD cases had higher cg04987734 (CDC42BPB) methylation both in the blood (p = 3.26e − 8) and the dlPFC (p = 3.9e − 3), and higher and intergenic cg19719391 methylation both in the blood (p = 2.45e − 8) and the DG (p = 3.04e − 3) compared to trauma-exposed controls, suggesting a robust epigenetic alteration associated with PTSD that is detectable across different tissue types.