SMN1 and Wilson disease: A recent study by Jańczyk W et al. [87] found that most WD patients (84%) had positive titers for ANA, SMA, anti-parietal cell antibodies (APCA), anti-neutrophil cytoplasmic antibodies (ANCA), or a combination of autoantibodies, with a highly positive reaction (title 1:160 and above) in 37% of cases.