Because human cancer cells have elevated levels of fatty acid synthase (FASN) and undergo exacerbated endogenous fatty acid synthesis to maintain a constant supply of lipids and lipids precursors for membrane production in a highly-proliferating population [14] and the Ki67 antigen is a cell proliferation marker, quantification of FASN and Ki67 in HK1 cells was performed. This evidence concerns the gene MKI67 and cancer.