To get more insights into the importance of Src in PV, two more IgG fractions from different pemphigus patients (PV2-IgG and PV3-IgG) as well as a monoclonal autoantibody against Dsg3 from a pemphigus mouse model (AK23) (27), were included for respective time points. Here, SRC is linked to acquired polycythemia vera.