After adjusting the GPC4-amyloid pathology correlation for tau pathology as a confounder by applying multiple linear regression, there was a significant relationship between GPC4 expression and amyloid pathology (r = 0.77; p = 0.0075), but not for tau pathology (r = 0.68; p = 0.2155). The gene discussed is MAPT; the disease is amyloidosis.