Table 1.

Prognosis of MDS according to IPSS risk score

IPSS risk (% IPSS population)	Overall score	Median survival (y) in the absence of therapy	25% AML progression (y) in the absence of therapy
Low (33)	0	5.7	9.4
Intermediate-1 (38)	0.5–1.0	3.5	3.3
Intermediate-2 (22)	1.5–2.0	1.1	1.1
High (7)	≥2.5	0.4	0.2

Abbreviations: MDS, myelodysplastic syndrome; IPSS, International Prognostic Scoring System; AML, acute myeloid leukemia; y, years.