The analysis revealed a pronounced upregulation of PSMB6 expression in eight 8 kinds of tumors: Lung Adenocarcinoma (LUAD), Lung Squamous Cell Carcinoma (LUSC), Uterine Corpus Endometrial Carcinoma (UCEC), Bladder Cancer (BLCA), Esophageal Carcinoma (ESCA), Kidney Renal Papillary Cell Carcinoma (KIRP), Breast Cancer (BRCA), Thyroid Carcinoma (THCA). This evidence concerns the gene PSMB6 and breast cancer.