For the exposure of both breast cancer cell lines to cisplatin, the received values confirmed the absence of significant induction of autophagy and were similar (MCF-7: 2.3 ± 0.3% and 3.3 ± 0.7%, MDA-MB-231: 3.8 ± 0.6% and 4.5 ± 0.6% of mTOR-negative cells for 1.5 and 3 μM concentrations, respectively) to the control group (MCF-7: 1.7 ± 0.3%, MDA-MB-231: 3.7 ± 1.2%). This evidence concerns the gene MTOR and breast cancer.