CRABP2 and esophageal squamous cell carcinoma: Take CRABP2 for example (Figure 5), we examined the methylation β values of all 16 CpG probes that are located on CRABP2 from HM450 array data (Infinium HumanMethylation450) in three cohorts (our data, n=30; TCGA ESCC data, n=85 and TCGA EAC data, n =87).