While here we have shown that in breast cancer cells IKKε‐mediated changes in metabolism support proliferation, these metabolic alterations might also facilitate other cellular functions (Jones & Bianchi, 2015), for example, cytokine secretion in immune cells (Chang et al, 2013; Tannahill et al, 2013; Rodriguez et al, 2019; Yu et al, 2019). This evidence concerns the gene IKBKE and breast cancer.