Increased Erythrocyte Count on Top of Bone Marrow Histology but not Serum EPO Level or JAK2 Mutation Load Discriminates between JAK2V617F Mutated Essential Thrombocythemia and Polycythemia Vera

Jan Jacques Michiels^1,7*, Michael Medinger², Hendrik De Raeve³, Wilfried Schroyens¹, Katrien Schelfout⁴, Vincent Potters⁴, Fransje Valster⁵ and Jenne Wielenga⁶

¹Department of Hematology, Antwerp University Hospital, Edegem, Belgium

²Department of Hematology, University Hospital Basel, Switzerland

³Department of Pathology, University Hospital Brussels, Belgium

⁴Department of Pathology, BRAVIS Hospital, Admiraal De Ruyter Hospital, The Netherlands

⁵Department of Hematology, BRAVIS Hospital, The Netherlands

⁶Admiraal De Ruyter Hospital, Vlissingen, The Netherlands

⁷European Working Group on Myeloproliferative Neoplasms (EWG.MPN), Goodheart Institute Rotterdam, On behave of the International Collaborations and Research on Myeloproliferative Neoplasms, The Netherlands

^*Corresponding Author: Jan Jacques Michiels, Michiels, Multdisciplinary Internist & Investigator, European Working Group on Myeloproliferative Neoplasm: EWG.MPN, Goodheart Institute & Foundation, Rotterdam, Erasmus Tower, Veenmos 13, 3069 AT Rotterdam, The Netherlands, Tel: 31-626970534 Email: