Cumulative genetic risk score across OXTR, CD38, and AVPR1a, previously associated with psychopathology, sociability, and caregiving of the mother, has been shown to interact with trauma-exposure in children to predict higher levels of PTSD, anxiety disorders, conduct disorders, and ADHD [22], further supporting the role of OXTR gene-environmental interactions. Here, OXTR is linked to post-traumatic stress disorder.