KDM6B and breast cancer: To understand the expression of KDM6B in breast cancer, we explored The Cancer Genome Atlas (TCGA; https://www.cancer.gov/about‐nci/organization/ccg/research/structural‐genomics/tcga), a free database that includes the genomic, epigenomic, transcriptomic and proteomic data of 33 types of cancers and matched normal samples, to determine whether abnormal KDM6B expression was present.