MAPT and oculocutaneous albinism type 1: The phi correlation coefficients were significant for PET PiB (A in ATN; φ = 0.39, p < 0.001), CSF total-tau (N in ATN; φ = 0.24, p < 0.05), and FDG index (N in ATN; φ = 0.64, p < 0.001), but not in the other two biomarkers (CSF Aβ42; A in ATN and CSF p-tau CSF, T in ATN; p’s > 0.1).