Response Criteria in Chronic Myeloid Leukemia
Hematologic | |
Complete responsea | White blood cell count <10,000/µL, normalmorphology |
Normal hemoglobin and platelet counts | |
Incomplete response | White blood cell count ≥10,000/µl |
Cytogenetic | Percentage of bone marrow metaphases with t(9;22) |
Complete response | 0 |
Partial response | ≤35 |
Minor response | 36-85b |
No response | 85-100 |
Molecular | Presence of BCR/ABL transcript by RT-PCR |
Complete response | None (<0.1%) |
Incomplete response | Any |
aComplete hematologic response requires the disappearance of splenomegaly.
bUp to 15% normal metaphases are occasionally seen at diagnosis (when 30 metaphases are analyzed).
Abbreviation: RT-PCR, reverse transcriptase polymerase chain reaction.