Further analysis of the genes differentially expressed in the public AD or memory datasets identified PGAP6, which is up-regulated in the MCI group compared to the dementia group (adjusted P-value = 0.029), and AKAP13 (encodes A-kinase anchoring protein 13) which was differentially expressed between the CN and dementia groups (adjusted P-value = 0.023). This evidence concerns the gene PGAP6 and Alzheimer disease.