Table 1.

Identifying high-risk patients with survival less than 5 years in myelofibrosis

Risk stratification modelRisk groupMedian OS, yProsCons
DIPSS14  Intermediate-2 4.0 Easy applicability based on clinical/laboratory variables Does not include any information on genetic variables that may have significant impact on the natural history of the disease 
High 1.5 
DIPSS +15  Intermediate-2 2.9 Includes cytopenias and cytogenetic data No mutational data 
High 1.3 
MIPSS70*16  High 3.1 Includes impact of MPN driver genes and HMR genes No cytogenetic data 
MIPSS70 + 2.0*17  High 4.1 Cytogenetic data
Driver/HMR genes 
 
Very high 1.8 
MPN personalized risk§18  TP53/–17p/–5/–5q 2.4 Combination of clinical/genetic/cytogenetic data Study heavily weighted toward PV/ET patients
Copy number variation not included in most clinical NGS reports 
Risk stratification modelRisk groupMedian OS, yProsCons
DIPSS14  Intermediate-2 4.0 Easy applicability based on clinical/laboratory variables Does not include any information on genetic variables that may have significant impact on the natural history of the disease 
High 1.5 
DIPSS +15  Intermediate-2 2.9 Includes cytopenias and cytogenetic data No mutational data 
High 1.3 
MIPSS70*16  High 3.1 Includes impact of MPN driver genes and HMR genes No cytogenetic data 
MIPSS70 + 2.0*17  High 4.1 Cytogenetic data
Driver/HMR genes 
 
Very high 1.8 
MPN personalized risk§18  TP53/–17p/–5/–5q 2.4 Combination of clinical/genetic/cytogenetic data Study heavily weighted toward PV/ET patients
Copy number variation not included in most clinical NGS reports 

HMR (ASXL1, IDH1/2, EZH2, SRSF2).

Includes ASXL1, IDH1/2, EZH2, SRSF2; adds U2AF1 Q157.

NGS, next-generation sequencing.

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