WHO Classification
Seven classes:
Refractory
Anemia
Refractory
Anemia with ringed sideroblasts
Refractory
Anemia with excess blasts
Chronic
myelomonocytic leukemia
Refractory
Anemia with excess blasts in transformation
RA
RARS
RAEB
CMML
RAEB-t
Refractory
cytopenia with multilineage dysplacia
5q-
syndrome
RCMD
Also reduces % blasts
from >30% to >20% for AML
There is a proposal to
change the classes more. See table 37-4 on page 518.
Also RAEB divided in
two: Type 1 = 5-9% Type 2 = 10-19%