In addition, fatty acid metabolism is important in regulating breast cancer progression,19 solute carrier family 27 member 4 (SLC27A4), as a fatty acid transporter, is also highly expressed in T2DM samples, and it is worthy of further study whether SLC27A4 can be used as a diagnosis of T2DM. The gene discussed is SLC27A4; the disease is type 2 diabetes mellitus.