Alzheimer's disease is alsocharacterized by the presence of tau protein [2,6, 10,12, 14,16, 18,27, 29,46, 47,48, 49,50] and neuro-fibrillary tangles (NFTs)[1, 12,14, 45,46, 50]in the brain as a common neuro-degenerative disorder[1, 2,6, 11,23, 28,29, 30,36, 37,43, 45,51, 52]. The gene discussed is MAPT; the disease is Alzheimer disease.