CFH and Alzheimer disease: The association with ARMD is particularly interesting as it has previously been found to be a risk factor for AD [24,25], because Aβ is a component of the drusen pathology in the retina of people with ARMD [26,27] and because the gene most associated with ARMD, CFH, encodes for a protein replicated as a biomarker of AD, complement factor H [28,29,30].