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