SLC5A1 and obesity due to melanocortin 4 receptor deficiency: However, there are reports on six of Slc genes (Slc2a10, Slc5A1, Slc5a9, Slc6A14, Slc16A5, Slc25A24) in metabolic diseases including obesity, dyslipidemia, NAFLD, and T2DM.