ACTB and esophageal squamous cell carcinoma: As shown in Table 2, the band intensity ratios of EYA4 mRNA with a β-actin positive cut-off value of ≧ 0.2 indicated that EYA4 mRNA expression increased progressively according to the severity of the pathology: controls 14.0% (7/50), BCH 20.0% (10/50), ESCD 26.0% (13/50), and ESCC 52.0% (26/50).