BDNF and post-traumatic stress disorder: In veterans with PTSD, PANSS cognitive scores did not differ significantly in subjects subdivided into carriers of the BDNF rs6265 genotypes (H = 5.291; df = 2; p = 0.071) or alleles (U = 128,427.0; p = 0.426), confirming that BDNF rs6265 did not predict significantly cognitive disturbance measured with the PANSS cognition subscale scores (Figure 1).