Among the 34 differentially methylated regions found, they focused the attention on the following two genes: brain-specific serine/threonine-protein kinase 2 (BRSK2) and adenylate cyclase-activating polypeptide 1 (ADCYAP1), which have already been linked to PTSD. The gene discussed is ADCYAP1; the disease is post-traumatic stress disorder.