The search to identify genes differentiating TNBC from non-TNBC has led to the identification of two potential genes, i.e. TBC1D9 and MFGE8. The bioinformatics results show that TBC1D9 might have a role in maintaining cellular integrity and therefore its expression is related to better survival outcome, whereas MFGE8 has a role in several oncogenic processes resulting in poor survival outcome in BC patients. This evidence concerns the gene TBC1D9 and breast cancer.