BDNF and Alzheimer disease: When analyzing the clinical characteristics of AD (Table 3), it was shown that carriers of the rs7103411*CC BDNF gene had a tendency to score more highly on the Clinical Global Impression scale (CGI-S) on day 28 of therapy (2 (2:3.5)) compared to carriers of the CT (2 (2:3)), and TT (2 (2:2)) genotypes (p = 0.057).