Barbui et al revised the International Prognosis Score of Thrombosis for Essential Thrombocythemia (IPSET) for Thrombosis. The authors are from multiple institutions in Italy, Austria, Germany and the Mayo Clinic.
Patient selection: essential thrombocythemia
Parameters:
(1) JAK2V617F status
(2) history of thrombosis
(3) age in years
JAK2V617F
History of Thrombosis
Age in Years
Risk of Thrombosis
absent
absent
<= 60 years
very low
present
absent
<= 60 years
low
absent
absent
> 60 years
intermediate
NA
present
NA
high
present
NA
> 60 years
high
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