CDH1 and neoplasm: In contrast, no statistically significant difference was seen in the expression of E-cadherin, α-catenin, β-catenin and γ-catenin in the 33 paired normal background and tumour tissues (copies/50 ng RNA, mean ± SD: E-cadherin normal background 17.4 ± 3.8, tumour 16.5 ± 6.7 p = 0.51; α-catenin normal background 13.5 ± 4.5, tumour 38.3 ± 30.3 p = 0.48, β-catenin normal background 0.048 ± 0.029, tumour 0.057 ± 0.019 p = 0.68, γ-catenin normal background 1.255 ± 0.927, tumour 0.219 ± 0.157 p = 0.28).