Functional analysis of the SEPT9-ABL1 chimeric fusion gene derived from T-prolymphocytic leukemia..     ///    These findings demonstrated that SEPT9-ABL1 had oncogenic activity and conferred resistance to TKIs.     ///    "Additionally, these SEPT9-ABL1 isoforms were resistant to TKIs in vitro and in vivo, in comparison to BCR-ABL1. "    ///     We analyzed the function of a SEPT9-ABL1 fusion identified in a case of T-prolymphocytic leukemia with tyrosine kinase inhibitor (TKI) resistance. 