FXYD6 and invasive breast carcinoma: In addition to that in PTC, FXYD6 was also downregulated in tumor tissues of most cancer types with a |log2FC| > 1 based on TCGA expression data from GEPIA (http://gepia.cancer-pku.cn), including adrenocortical carcinoma, bladder urothelial carcinoma and breast invasive carcinoma, among others.