Fluorescence in situ hybridization revealed an unusual signal pattern  revealing the BCR-ABL1 fusion signal on chromosome 12, while no reciprocal ABL1-BCR fusion was detected on der(9) chromosome.     ///    Unusual location of BCR-ABL1 fusion sequences in a chronic myeloid leukemia patient..     ///    "The relocation of BCR-ABL1 fusion sequences to 12p11 site in our patient represents a rare type of variant translocation, as in almost all patients  the chimeric BCR-ABL1 gene is located on der(22) chromosome. "    ///     We describe a case of a chronic myeloid leukemia patient displaying the chimeric BCR-ABL1 gene on 12p11. 