BDNF and Cognitive impairment: Considering this, we aimed to study the relation between BDNF and cognitive functioning in two groups of schizophrenic patients with different cognitive statuses, finding a positive, statistically significant correlation (p = 0.04) between the plasma BDNF levels and MoCA scores in the group of patients with schizophrenia who presented a cognitive deficit, according to the neurocognitive evaluation (n = 29).