The result showed that the relative expression level of EZH2 mRNA in ERMS (n = 8), alveolar rhabdmyosarcoma (ARMS) (n = 10), TASM (n = 3) and normal skeletal muscle (n = 3) were 3.44, 2.55, 1.28 and 1, respectively. The gene discussed is EZH2; the disease is embryonal rhabdomyosarcoma.