Among pyroptosis-related genes, GPX4, NLRP7, CASP6, CASP3, IL1B, IL18, CASP8, NLRP6, IL6, GSDMC, PYCARD, AIM2, NOD2, NLRP3, and CASP4 were aberrantly expressed in breast cancer. The gene discussed is NOD2; the disease is breast cancer.