SNAI1 and non-small cell lung carcinoma: The correlations between BRF2 protein immunoreactivity and E-Cadherin, N-Cadherin, or snail were analyzed by Mann-Whitney U test, and the result also showed that high expression of BRF2 correlated with a loss of E-Cadherin expression (P = 0.048) and anomalous positivity of N-Cadherin (P = 0.045); we also found such a trend in the correlation between high expression of BRF2 and positivity of snail in clinical NSCLC samples, despite the fact that the statistical significance was not reached.