A novel ETV6-NTRK3 gene fusion in congenital fibrosarcoma..     ///    "Moreover, ETV6-NTRK3 gene fusions provide a potential diagnostic marker for CFS.. "    ///    ETV6-NTRK3 fusion transcripts encode the helix-loop-helix (HLH) protein dimerization domain of ETV6 fused to the protein tyrosine kinase (PTK) domain of NTRK3.     ///    Analysis of mRNA revealed the expression of ETV6-NTRK3 chimaeric transcripts in all three CFS tumours analysed. 