 We report the occurrence of a BCR-JAK2 fusion gene in a case of acute myeloid leukemia (AML) resulting from a t(9;22)(p24;q11) translocation as the sole cytogenetic abnormality.     ///    A BCR-JAK2 fusion gene as the result of a t(9;22)(p24;q11) in a patient with acute myeloid leukemia..     ///    The BCR-JAK2 fusion gene has the same breakpoint in BCR as is found in the BCR/ABL p210.     ///    "Previously, BCR-JAK2 rearrangement was observed in a single case with atypical chronic myelogenous leukemia (CML), but in that case the breakpoint in the BCR was different.. "