KLF5 and gastric cancer: Among transcription factors of this network up-regulated in intestinal metaplasia and gastric cancer, ELF3 over-expression is strongly correlated with the over-expression of HNF4A (Spearman’s rank correlation coefficient q = 8.68 × 10−14, Fig. 7A), as well as with over-expression of HNF1A (Spearman’s rank correlation coefficient q = 1.42 × 10−13, Fig. 7B), KLF5 (Spearman’s rank correlation coefficient q = 4.12 × 10−21, Fig. 7C) and GATA6 (Spearman’s rank correlation coefficient q = 5.22 × 10−10, Fig. 7D).