AßP-42, tau protein, α-synuclein, asialoganglioside GM1, GFAP, rab-5, ATP-synthase, MBP, and their antibodies have been linked with neurodegeneration and diseases such as AD, Parkinson's disease (PD), and multiple sclerosis (MS) [2, 7–14]. The gene discussed is RAB5A; the disease is Alzheimer disease.