The pharmacological therapies currently available for AD patients include two classes of drugs [40]: (i) Donepezil, rivastigmine, and galantamine, which are cholinesterase inhibitors recommended for patients with mild, moderate, or severe AD dementia [40,41]; (ii) memantine, either a non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist and a dopamine agonist approved for the treatment of patients with moderate-to-severe AD [40,41,42]. This evidence concerns the gene BCHE and Alzheimer disease.