There were no significant associations between tau plasma levels and CSF levels of Aβ42 (β = 0.002; 95% CI −0.005 to 0.002, p = 0.316), tau (β = 0.003; 95% CI −0.005 to 0.000, p = 0.268), and p-tau181 (β = 0.014; 95% CI −0.032 to 0.005, p = 0.129) after controlling for age, gender, and education in abnormal SCD (results not shown). This evidence concerns the gene MAPT and Schnyder corneal dystrophy.