The basic two-band pattern, as revealed by western blotting with anti-P-tauSer422 antibodies, of 68 kDa and 64 kDa characteristic of 4Rtau tauopathies, already reported in other cases suffering from GGT [3, 7, 28, 38, 45, 111, 135], is regular in all cases. Here, GGT1 is linked to tauopathy.