TARDBP and amyotrophic lateral sclerosis: For ALS-TDP, 4 participants did not have brain regional TDP-43 but did have TDP-43 present in the spinal cord, while 1 participant with ALS-TDP and 6 participants with FTLD-TDP did not have any regional TDP-43 noted, potentially signaling a data entry error or the presence of TDP-43 inclusions in a region not included in the NACC neuropathology form.