MAPT and Alzheimer disease: Regrettably, the current NACC's TBI cohorts did not have sufficient amounts of neuropathological data to perform meaningful statistical analyses and identify, for example, specific clinico-pathological correlations between a peculiar type of TBI and AD pathology severity (e.g., MVA-TBI and hyperphosphorylated-Tau neurofibrillary tangles or β-amyloid neuritic plaques scores), or between TBI types and non-AD pathology loads or histological distribution (e.g., MVA-TBI vs. contact sports-TBI and Lewy bodies or TDP43 inclusions loads in specific traumatized regions of the brain).