DNA aptasensors for amyloid beta Aβ, Tau (τ), and αSyn, coupled with an at-home, wireless graphene field-effect transistor biosensor platform, have proven great precision and sensitivity (detection limits of 10 fM, 1-10 pM, 10-100 fM for Aβ, τ, and αSyn, respectively), the absence of cross-reactivity, as well as the ability to discriminate between neurodegenerative (AD, PD) and normal brains [140]. The gene discussed is MAPT; the disease is Alzheimer disease.