The identification of ∼600 bp of a RAS related leukemia viral oncogene (LOC642550) proximal to the L1 retrotransposon within the NAV3 -SYT1-PAWR gene cluster is also of interest given the known and shared role of rearrangement mediated FUS gene fusions between myxoid liposarcoma and leukemia [67]–[71]. The gene discussed is NAV3; the disease is myxoid liposarcoma.