SLC2A9 and hyperuricemia: Urate production and reabsorption in the renal and digestive system are connected to human sodium phosphate cotransporter types (NPT1-4), organic anion transporters (OAT1-4), urate transporter (URAT1), glucose transporters (GLUT9), and adenosine triphosphate (ATP) binding cassette subfamily member (ABCG2), and play a contributory part in hyperuricemia.