CPT1C and breast cancer: However, other studies, for instance, have analyzed different AA concentrations, finding that the peroxisome proliferator-activated receptor-alpha (PPARα) was reported to be more efficiently activated by 10 μM of AA [30], and modulates cell proliferation and senescence in breast cancer cells through the regulation of carnitine palmitoyltransferase 1C (CPT1C) [42].