MAPT and red-green color blindness: Frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17) has recently been described as “familial FTLD-tau” because of the similarity of neuropathological features and disease progression between patients of familial FTLD-tau with MAPT mutations and sporadic FTLD-tau subtypes (PiD, PSP, CBD, and GGT) (176).