Relacionar Columnas polycythemia veraVersión en línea information about thus blood cancer por Kennedy Ellis 1 enlarged spleen 2 polycythemai vera 3 the mutation in which gene causes this blood cancer 4 what does polycythemia cause? 5 what do you experience? 6 drawing blood heart attack or stroke helps fight infection and filter unwanted material and gets bigger when there is too much RBCs janus kinase 2 (JAK2) increased number of red blood cells itchiness, headches, dizziness, bleeding/bruising, weakness, fatigue helps reduce # of RBCs