The statistical analysis of the expression level of BIRC genes in patients with TNBC and in patients without TNBC obtained with the Breast Cancer Gene-Expression Miner v4.5 online tool showed statistically significant differences in the expression level of BIRC1, BIRC2, BIRC3, BIRC4, and BIRC5 genes in patients from TCGA database depending on the type of molecular breast cancer. The gene discussed is BIRC2; the disease is breast cancer.