Six types of GSD, type 0 (Gys2), I (G6PC and SLC37A4), III (AGL), IV (GBE1), VI (PYGL), and IX (PHKA), were included, with the most common being type I (66.9%) (Figure 1B; Table S1, Supporting Information). This evidence concerns the gene SLC37A4 and disorder of glycogen metabolism.