Furthermore, we analyzed the difference in SPON2 mRNA expression between 198 TNBC and 67 non-TNBC breast cancers in the GEO database GSE76275 dataset, and the results showed that SPON2 mRNA expression was higher in TNBC than in non-TNBC breast cancers, Figure 1C. The gene discussed is SPON2; the disease is breast cancer.