Research Article
The Essential Thrombocythemia, Thrombotic Risk Stratification, and Cardiovascular Risk Factors
Table 1
The traditional system for thrombosis risk in ET, the IPSET-t, and the revised IPSET-t.
| Traditional score for thrombotic risk in ET | Low risk | Age <60 years | AND | No thrombosis | | High risk | Age >60 years | OR | Thrombosis | |
| IPSET-thrombosis score | Items | Points | Low risk | Intermediate risk | High risk | JAK2 V617F | 2 | <2 points | 2 points | >2 points | Thrombosis | 2 | | | | Age >60 years | 1 | | | | CVR ≥1 | 1 | | | |
| Revised IPSET-thrombosis | Very low risk | Age <60 years | AND | No thrombosis | JAK2 WT | Low risk | Age <60 years | AND | No thrombosis | JAK2 V617F | Intermediate risk | Age >60 years | AND | No thrombosis | JAK2 wildtype | High risk | Age >60 years | OR | Thrombosis | JAK2 WT/V617F |
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CVR: cardiovascular risk factors; WT: wildtype.
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