In the TCGA dataset, which contains 593 genetic samples from patients with BC, EGR1 expression was discovered in different invasive BCs and was significantly lower in BC (invasive ductal breast cancer: fold change −14.944; invasive lobular breast cancer: fold change −7.001; invasive breast cancer: fold change −6.692) (Table 1). The gene discussed is EGR1; the disease is invasive breast carcinoma.