 To study the clinical significance of inv(16) and CBF beta-MYH11 fusion gene in the diagnosis and prognosis for M4Eo.     ///    [Detection of CBF beta-MYH11 fusion transcript and inv(16)(p13;q22) in acute myelomonocytic leukemia(M4) by RT-PCR and FISH]..     ///    "CBF beta-MYH11 fusion transcripts and inv (16) were analyzed by reverse-transcriptase polymerase chain reaction(RT-PCR) and fluorescence in situ hybridization(FISH), respectively, in acute myelomonocytic leukemia(M4) with or without eosinophilia. "    ///    "In fifteen cases tested, one case of M4Eo and one of 9 M4 without eosinophilia were found to have CBF beta-MYH11 fusion transcript. "