Genotypic single marker association analysis to verbal memory traits.

Analyses were performed with Helix Tree software. Only p-values <0.01 are reported (see SOM for regression analysis, marker details, results and description of cognitive traits tested). In the NCNG sample, verbal learning and delayed recall were assessed with the California Verbal Learning Test (CVLT-II [28]). In total, six BDNF-LTP related genes were tested and 48 markers were analyzed. In the LBC samples, verbal memory was tested with the Wechsler memory scale test (LM- delayed and learning [32], [37]) and the samples were genotyped for 16 DCLK1 markers only, with no screening of the other genes (n.t: not tested). P-values below Bonferroni corrected p-value threshold ( = 0.001 for NCNG), are highlighted in bold.