DIPSS for survival in primary myelofibrosis
| Prognostic variable . | Value . | ||
|---|---|---|---|
| 0 . | 1 . | 2 . | |
| Age, y | ≤ 65 | > 65 | |
| White blood cell count, ×109/L | ≤ 25 | > 25 | |
| Hemoglobin, g/dL | ≥ 10 | < 10 | |
| Peripheral blood blast, % | < 1 | ≥ 1 | |
| Constitutional symptoms, Y/N | N | Y | |
| Prognostic variable . | Value . | ||
|---|---|---|---|
| 0 . | 1 . | 2 . | |
| Age, y | ≤ 65 | > 65 | |
| White blood cell count, ×109/L | ≤ 25 | > 25 | |
| Hemoglobin, g/dL | ≥ 10 | < 10 | |
| Peripheral blood blast, % | < 1 | ≥ 1 | |
| Constitutional symptoms, Y/N | N | Y | |
The risk category is obtained adding up the values of each prognostic variable. Risk categories are defined as low: 0; intermediate-1: 1 or 2; intermediate-2: 3 or 4; and high: 5 or 6.
DIPSS indicates Dynamic International Prognostic Scoring System.