ABL1 and chronic myelogenous leukemia, BCR-ABL1 positive: The qRT-PCR results also agreed with the pathological diagnosis, i.e., the 2 samples positive for BCR-ABL were from the CML patients, 4 positive for PML-RARα were from the APL patients, and 1 positive for AML-ETO was from the AML patient (Figure 2).