It has also been reported that childhood maltreatment in the AA/AG subgroup leads to more empathy towards psychological pain while the GG subgroup remained unaffected by childhood maltreatment; therefore, it is hypothesized that the OXTR gene has a role in disproportionately increased empathy towards psychological pain in BPD patients as compared to controls, with this disproportionality leading to disturbed relatedness. Here, OXTR is linked to Borderline personality disorder.