MMP14 and esophageal squamous cell carcinoma: Coincidentally, our mRNA microarray data [22] pertaining to 119 pared tissues from patients with ESCC (Fig. 5e), microarray data collected by Hua Su [23] (Fig. 5f), and ESCC RNA-seq data from TCGA (Fig. 5g) showed that MMP14 expression was significantly upregulated in ESCC tissues compared with paired normal tissues.