Skip to content
ClinCalc Pro
Menu
haematology

IPSET Score (ET Thrombosis Risk)

International Prognostic Score for Essential Thrombocythemia (IPSET) — thrombosis risk. Guides cytoreduction and aspirin decisions.

Score interpretation

Low thrombosis risk

→ Observation; aspirin 75mg if JAK2+ or cardiovascular risk factors; no cytoreduction required; 6-monthly haematology review

Intermediate thrombosis risk

→ Aspirin 75-100mg daily; hydroxycarbamide if high platelet count; monitor for thrombosis/haemorrhage; cardiovascular risk modification; annual haematology

High thrombosis risk

→ Cytoreduction mandatory: hydroxycarbamide first-line; pegylated interferon alfa for young patients or intolerance; aspirin 75mg daily; anticoagulation if prior VTE; target platelet <400; if HU resistant: anagrelide or ruxolitinib

Interpretation bands for the IPSET-Thrombosis. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.