Dynamic International Prognostic Scoring System

**Semantic type:** Classification

**Definition:** A time-dependent risk evaluation system for primary myelofibrosis that evaluates disease progression over time. This model includes age older than 65 years, hemoglobin level lower than 10 g/dL, white blood cell count more than 25x10^9/L, peripheral blood blasts equal to or higher than 1%, and constitutional symptoms in order to assign a patient to one of 4 risk categories.

**Synonyms:** - DIPSS