We thus retrospectively examined the normalized WEE1 mRNA expression in 8636 primary breast cancers, including 1847 TNBC, gathered from 36 public gene expression data sets.[12] In TNBC, high WEE1 expression (defined as expression above median expression level in the whole data set) was associated with high pathological grade, pT2 size, and basal‐like 1 and mesenchymal Lehmann subtypes[13] (Table S2, Supporting Information). This evidence concerns the gene WEE1 and breast carcinoma.