BDNF and post-traumatic stress disorder: Brain-derived neurotrophic factor Val66Met has been linked to a variety of psychopathologies, including major depressive disorder (Legge et al., 2015), bipolar disorder (Cao et al., 2016) schizophrenia (Notaras et al., 2015), and post traumatic stress disorder (Felmingham et al., 2013).