In breast cancer, FABP3 acts as a tumor suppressor gene: its expression was downregulated in breast cancer samples; FABP3 cDNA transfection in breast cancer cell lines leads to a modest anti-proliferative activity [8]; similarly, over-expression of FABP3 in embryonic cancer cells inhibits cell growth and leads apoptosis [9]. This evidence concerns the gene FABP3 and breast cancer.