CREB1 and neoplasm: IHC study showed that the expression of MBNL1 was positively correlated with CREB1 in tumor samples (n = 56, r = 0.419, P = 0.01), and the correlation between CREB1 and MBNL1 was insignificant in normal gastric samples (n = 52, r = 0.153, P = 0.276) (Fig. 5B, C).