SLC37A4‐CDG: Second patient

• Main Authors: Matthew P. Wilson, Dulce Quelhas, Elisa Leão‐Teles, Luisa Sturiale, Daisy Rymen, Liesbeth Keldermans, Valérie Race, Erika Souche, Esmeralda Rodrigues, Teresa Campos, Emile Van Schaftingen, François Foulquier, Domenico Garozzo, Gert Matthijs, Jaak Jaeken
• Format: Article
• Language: English
• Published: Wiley 2021-03-01
• Series: JIMD Reports
• Subjects: CDG; G6PT1; glycogen storage disease; glycosylation; hepatopathy; SLC37A4
• Online Access: https://doi.org/10.1002/jmd2.12195
• ISSN: 2192-8312

Abstract Recently, a disorder caused by the heterozygous de novo c.1267C>T (p.R423*) substitution in SLC37A4 has been described. This causes mislocalization of the glucose‐6‐phosphate transporter to the Golgi leading to a congenital disorder of glycosylation type II (SLC37A4‐CDG). Only one patient has been reported showing liver disease that improved with age and mild dysmorphism. Here we report the second patient with a type II CDG caused by the same heterozygous de novo c.1267C>T (p.R423*) mutation thereby confirming the pathogenicity of this variant and expanding the clinical picture with type 1 diabetes, severe scoliosis, and membranoproliferative glomerulonephritis. Additional clinical and biochemical data provide further insight into the mechanism and prognosis of SLC37A4‐CDG.