With the exception of clonal Pdgfra and Nav3 insertions in one tumor, transposon insertions in MAPK/PI3K pathway and neurodevelopmental genes (including Nf1, Pten, Pik3r1, Ptprj, Sox6, Sox5, and Tcf4) were subclonal in these tumors, implying these were late evolutionary events. Here, TCF4 is linked to neoplasm.