In three different types of breast cancer cells, differential expression was also observed in genes including HERV-K_1q23.3, CD48, SLAMF1, SLAMF7, HERV-K_22q11.23, IGLL1, HERV-K_9q34.11, and LRRC8A (Fig. 6). This evidence concerns the gene SLAMF7 and breast cancer.