Table 3.

Prognosis of MDS according to WPSS risk score

WPSS	Sum of individual variable scores	Median survival (y) from diagnosis	Median time (y) to AML progression from diagnosis
Very low	0	11.6	Not reached
Low	1	9.3	14.7
Intermediate	2	5.7	7.8
High	3–4	1.8	1.8
Very high	5–6	1.1	1

Abbreviations: MDS, myelodysplastic syndrome; WPSS, World Health Organization-based Prognostic Scoring System; AML, acute myeloid leukemia; y, years.