Revised IPSET-thrombosis (Essential Thrombocythemia Thrombosis Risk)
Stratifies thrombosis risk in essential thrombocythemia into four categories from three factors — age, prior thrombosis, and JAK2 V617F status — to inform antiplatelet/cytoreduction decisions; this is the revised 2015 IPSET-thrombosis decision tree (a 4-way classification), NOT the original additive-points IPSET score, and it is a risk-stratification aid — not a diagnosis of ET nor a treatment mandate.