Problem: It has been suggested that type of chimeric mRNA is associated with differences in the clinical and hematologic characteristics of chronic myeloid leukemia (CML). However, prognostic value of type of chimeric mRNA bcr-xabl (b3a2 or b2a2) is still controversial.
Methods: We analyzed 97 cases of Philadelphia-positive CML to determine mRNA type by reverse-polymerase chain reaction (RT-PCR) and its relationship with clinical features.