DSG3 and acquired polycythemia vera: Of note, in the group of remitting PV patients the highest numbers of Dsg3-specific memory B cells exceeding the levels observed in HC were particularly detected in patients who underwent previous B cell depletion (Patient 4, 8, 13 in Supplementary Table 1) suggesting a reconstitution of autoreactive memory B cells upon anti-CD20 antibody treatment (Supplementary Figure 4).