We then evaluated the expression level of those 9 genes in RMS tumor biopsies and found that SNAI1, CDC14B, NELL1, GADD45G, TNFAIP3 and POU4F1 were significantly different in the ARMS fusion-positive and ERMS samples (Figure 2C). This evidence concerns the gene POU4F1 and embryonal rhabdomyosarcoma.