SCD and neoplasm: Stearoyl-CoA desaturase (SCD): SCD catalyzes the conversion of saturated fatty acids (SFAs) to monounsaturated fatty acids (MUFAs) and converts stearoyl-CoA (C18:0) and palmitoyl-CoA (C16:0) to oleoyl-CoA (C18:1) and palmitoyl-CoA (C16:1), respectively, with the introduction of double bonds, which increase the level of FAs unsaturation and serve as an important energy source for tumor cells.