These results confirm that CBFB/MYH11 transcripts (with a predominant type A form) are present in most cases of inv(16) AML.     ///    The clinical relevance of persistent CBFB/MYH11 fusion transcripts in remission remains to be established by studying a large prospective series of patients.     ///    "To assess the presence of type A CBFB/MYH11 fusion transcripts in five AML-M4Eo patients in remission, we designed a sensitive assay combining nested PCR and allele-specific amplification (NPASA). "    ///    "We have analyzed 24 patients with AML-M4Eo at diagnosis and 47 patients with AML of other FAB subtypes, by a reverse-transcriptase polymerase chain reaction (RT-PCR) assay for the CBFB/MYH11 fusion mRNAs. "