IPSET
  IPSET SCORE (SURVIVAL)                
  IPSET prognostic score for survival in ET              
  The Dynamic International Prognostic Scoring System (DIPSS) can be applied at any time in disease course.     1. Sum the points for each prognostic factor      
Value Points
Prognostic variable 0 points 1 point 2 points
Age (years)*
Prior thrombosis
WBC count (x 109/L)*
White blood cell count (x109/L) <11 >=11 -
            2. Determine risk group and prognosis      
            Score Risk category    
  IPSET score          
  IPSET risk group       1 - 2 Intermediate    
               
  Reference                  
  Passamonti F, Thiele J, Girodon F, Rumi E, Carobbio A, Gisslinger H et al. A prognostic model to predict survival in 867 World Health Organization-defined essential thrombocythemia at diagnosis: a study by the International Working Group on Myelofibrosis