The NTRK3 gene on chromosome 15 was found to constitute the 3' end of the fusion gene and the underlying ETV6-NTRK3 rearrangement was verified by reverse transcriptase PCR.    ///    The NTRK3 gene on chromosome 15 was found to constitute the 3' end of the fusion gene and the underlying ETV6-NTRK3 rearrangement was verified by reverse transcriptase PCR.     ///    No RNA of the reciprocal NTRK3-ETV6 fusion gene could be detected.    ///    No RNA of the reciprocal NTRK3-ETV6 fusion gene could be detected.     ///    ETV6-NTRK3 rearrangements have been described in secretory breast carcinoma and congenital fibrosarcoma..    ///    ETV6-NTRK3 rearrangements have been described in secretory breast carcinoma and congenital fibrosarcoma.. 