KAT6A and breast cancer: To identify the role of KAT6A in breast cancer metastasis, we first examined the DNA copy numbers of all KATs in clinical TNBC specimens from the Molecular Taxonomy of Breast Cancer International Consortium (METABRIC) dataset (https://www.cbioportal.org/).[25] KAT genes show various degrees of copy‐number amplification in TNBC, and KAT6A is mostly amplified (30/320, 9.4%) (Figure 1A).