The issue at stake in MMC residents relates to Braak and Del Tredeci et al.’s key papers on AD and PD development: “Abnormal tau lesions (non-argyrophilic pretangle material, argyrophilic neuropil threads, neurofibrillary tangles) in select types of neurons are crucial for the pathogenesis of sporadic Alzheimer’s disease. This evidence concerns the gene MAPT and Parkinson disease.