Lastly, a substantial reduction in the expression of MFG-E8, reputed to be a promoter of tumorigenesis in triple-negative BC [38,39], was detected in D609-treated MDA-MB-231 cells, and average decreases of 61% ± 3% at 48 hours and 83% ± 4% at 120 hours were observed (Figure 4c). This evidence concerns the gene MFGE8 and breast cancer.