Fig. 4.

Event-free survival in 69 MPN patients presenting with SVT (red line) and 165 age- and sex-matched patients without SVT at diagnosis (blue line). Median EFS was 8 and 17 years for patients presenting with SVT and those without SVT at diagnosis, respectively (p < 0.001). Event-free survival included death, thrombosis, major bleeding or disease progression to myelofibrosis/acute leukemia, whichever occurred in the first place. Abbreviation: MPN, myeloproliferative neoplasm; SVT, splanchnic vein thrombosis