Table 1 The frequencies of relapsed and secondary acute myeloid leukemia (AML), signs of differentiation (FAB subclasses, CD34 expression) and genetic abnormalities among unselected AML patients unfit for intensive therapy
FAB classification | Â |
|---|---|
  M0/M1 | 0.41 |
  M2 | 0.23 |
  M4/M5 | 0.36 |
Expression of CD34 (> 20% positive cells) | 0.70 |
Cytogenetic abnormalities | Â |
  Normal | 0.50 |
  Good | 0.00 |
  Intermediate | 0.20 |
  Adverse | 0.30 |
Flt3- internal tandem duplication | 0.40 |
NPM-1 mutation | 0.35 |