. Author manuscript; available in PMC: 2015 Dec 1.

Published in final edited form as: Hematol Oncol Clin North Am. 2014 Oct 3;28(6):1023–1035. doi: 10.1016/j.hoc.2014.08.003

Table 1.

Prognostic Score Systems Developed for Patients with Primary Myelofibrosis

Variable	IPSS	DIPSS	DIPSS-plus
Age>65 years	X	X	X
Constitutional Symptoms	X	X	X
Hb<100g/L	X	X	X
WBC>25 × 10 ⁹/L	X	X	X
Circulating Blasts>1%	X	X	X
Platelets <100 ×10 ⁹/L			X
RBC Transfusion need			X
Unfavorable Karyotype			X
	1 point each	1 point each but Hb=2	1 point each