Table 2.

CLL prognostic scoring system

Risk	Points	Survival
Low	1–3	Not reached
Intermediate	4–7	10.3 years
High	8 or more	5.4 years

Notes: One point for age <50 years, ALC 20×10⁹/L–50×10⁹/L, β-2 microglobulin one to two times ULN, nodal groups three or more, or Rai Stage III or IV. Two points for β-2 microglobulin greater than two times ULN, age 50–65 years, or ALC >50×10⁹/L. Three points for age >65 years. Data from Wierda et al.²⁶

Abbreviations: ALC, absolute lymphocyte count; ULN, upper limits of normal; CLL, chronic lymphocytic leukemia.