DUOX2 and gastric adenocarcinoma: Data from a TCGA’s data set (449 stomach adenocarcinoma (STAD) samples, Figure 5) provided by the UALCAN web resource for analyzing cancer OMICS data (http://ualcan.path.uab.edu/index.html [24], accessed on 28 July 2021) indicate that there are no DUOX2 mRNA statistical differences between normal and primary tumors based on sample types, tumor grades, or nodal metastasis status.