Sheng et al. unveiled, even more, the connection of IL-23 to breast cancer by studying the expression levels of interleukin (IL)‐23/IL‐23 receptor (R) gene reporting increased results in breast cancer tissues, correlating IL‐23 and IL‐23R expression levels with the patients' tumor size, stage, and metastasis [45]. The gene discussed is IL37; the disease is breast carcinoma.