International Prognostic Scoring System for Myelodysplastic Syndromes

International Prognostic Scoring System for Myelodysplastic Syndromes

Prognostic Score Value Variable 0 0.5 1.0 1.5 2.0

BM blasts (%) <5 5-10 - 11-20 21-30

Karyotype* Good Intermediate Poor

Cytopenias 0/1 2/3

Scores for risk groups are as follows: Low, 0; INT-1, 0.5-1.0; INT-2, 1.5-2.0; and High, ≥2.5. *Good, normal, -Y, del(5q), del(20q); Poor, complex (≥3 abnormalities) or chromosome 7 anomalies; Intermediate, other abnormalities.

Greenberg, P., C. Cox, M.M. LeBeau, P. Fenaux, P. Morel, G. Sanz, M. Sanz, T. Vallespi, T. Hamblin, D. Oscier, K. Ohyashiki, K. Toyama, C. Aul, G. Mufti, and J. Bennett. 1997. International scoring system for evaluating prognosis in myelodysplastic syndromes. Blood 89:2079-2088.