Pearson correlation analysis further demonstrated that the relative expression level of SOX4 in pancreatic carcinomas (normalized with the value derived from non-tumor tissues) was inversely correlated with that of miR-129-2 and miR-335, respectively, in a statistically significant way (Pearson correlation coefficient R = −0.4991, P = 0.0154 for LogmiR-129-2 vs logSOX4; R = −0.724, P = 0.0005 for logmiR-335 vs logSOX4) (Fig. 5B, left and central plot). This evidence concerns the gene SOX4 and exocrine pancreatic carcinoma.