MAPT and supranuclear palsy, progressive, 1: Carriers of the ABI3_rs616338-T variant showed a trend for greater NFT burden in PSP (ß = 0.38, 95% CI − 0.022 to 0.786, p = 0.064) (Table 4) but there were no associations or trends for CB, TA, TAUTH, or Overall tau burden for this variant.