disease has basis in dysfunction of SLC37A4 glycogen storage disease I glycogen storage disease type 1 due to SLC37A4 mutation Any glycogen storage disease due to glucose-6-phosphatase deficiency in which the cause of the disease is a mutation in the SLC37A4 gene. G6P translocase deficiency GARD:0002501 HGNC:4061 MESH:C536831 MONDO:0023258 SLC37A4 glycogen storage disease I This class may be deprecated in future. There are two types of GSDI: glycogen storage disease type Ia (GSDIa) and glycogen storage disease type Ib (GSDIb). Two other forms of GSDI have been described, and they were originally named types Ic and Id. However, these types are now known to be variations of GSDIb; for this reason, GSDIb is sometimes called GSD type I non-a. https://ghr.nlm.nih.gov/condition/glycogen-storage-disease-type-i UMLS:C2931345 glucose-6-phosphate translocase deficiency glycogen storage disease I caused by mutation in SLC37A4 https://rarediseases.info.nih.gov/diseases/2501/glucose-6-phosphate-translocase-deficiency