In representative Chen Gastric data sets (N = 35) from the Oncomine database [30], FSTL1 expression was significantly high expression in GC tissues compared with normal tissues, and was elevated in multiple pathological typing, including adenocarcinoma, intestinal carcinoma, diffuse carcinoma, and mixed carcinoma (Fig. 1c, d). Here, FSTL1 is linked to adenocarcinoma.