The data indicated that GTSE1 expression was upregulated in a variety of tumor tissues, such as kidney renal clear cell carcinoma (ccRCC), bladder cancer (BLCA), breast cancer (BRCA), cholangiocarcinoma (CHOL), colon adenocarcinoma (COAD), esophageal carcinoma (ESCA), and head and neck squamous cell carcinoma (HNSC) (Supplementary Figure S1). This evidence concerns the gene GTSE1 and breast cancer.