CC and RT-PCR for fusion genes BCR/ABL, MLL/AF4, E2A/PBX1, TEL/AML1 were performed at diagnosis in each patient.     ///    "Moreover, FISH showed the percentage of TEL/AML1(+) cells that turned to be an important prognostic factor. "    ///    It was also good for those with TEL/AML1 present in >or=80% of cells without chromosome aberrations.     ///    "BCR/ABL was present in two cases, PBX1/E2A in two, and TEL/AML1 in 14. "