Table 1.

Lower-Risk Prognostic Scoring System (LR-PSS)

Clinical Variables	Points
Unfavorable cytogenetics (not normal or del(5q) alone)	1
Age ≥ 60 years	2
Hemoglobin < 10 g/dL	1
Platelet count (×109/L)
< 50	2
50-200	1
Bone marrow blasts ≥ 4%	1
Risk group assignment (total points)
Category 1	0-2
Category 2	3-4
Category 3	5-7