<b>Results</b>: The placental expression of <i>GLUT3</i> was significantly reduced in the GDM group, while the placental expression of <i>GLUT4</i>, <i>GLUT7</i> and <i>SLC30A8</i> was significantly upregulated in the GDM group. This evidence concerns the gene SLC30A8 and gestational diabetes.