NR3C1 and post-traumatic stress disorder: Lifetime trauma exposure and PTSD symptoms can lead to epigenetic changes in the regulation of the HPA axis as well as the NR3C1 promotor gene (González Ramírez et al., 2020; Palma-Gudiel, Cordova-Palomera, Leza, et al., 2015; Sheerin et al., 2020).