(A) The enrichment of HIF1α, SNAI2, TWIST1/2, and ZEB1 binding sites on the promoters of Bmi1, Ctcf, Ezh2, Kdm2b, and Wdr5 was determined by Pscan Zambelli et al, 2009(). The resulted Z-scores were listed. "Max. M" suggested the maximum Z-score generated with SNAI2, TWIST1/2, and ZEB1 binding sites on one indicated promoter. "Average" suggested the average Z-score of all transcriptional factors tested in the Pscan software on one indicated promoter. 