DSG3 and acquired polycythemia vera: Binding of the autoantibodies has been shown to trigger a cascade of intracellular events that may contribute to the pathogenesis of PV, including phosphorylation of Dsg3 and its depletion from desmosomes, induction of apoptosis and modulation of a series of signalling molecules, such as Pg, PKC, p38 MAPK, heat shock protein p27, Src and c-Myc [19]–[28].