The clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1

Glucose transporter 1 deficiency syndrome (GLUT1DS) is a neurometabolic disorder caused by haploinsufficiency of the GLUT1 glucose transporter (encoded by SLC2A1) leading to defective glucose transport across the blood–brain barrier. This work describes the genetic analysis of 56 patients with clini...

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Published inClinical genetics Vol. 102; no. 1; pp. 40 - 55
Main Authors Sánchez‐Lijarcio, Obdulia, Yubero, Delia, Leal, Fátima, Couce, María L., González Gutiérrez‐Solana, Luis, López‐Laso, Eduardo, García‐Cazorla, Àngels, Pías‐Peleteiro, Leticia, Azua Brea, Begoña, Ibáñez‐Micó, Salvador, Mateo‐Martínez, Gonzalo, Troncoso‐Schifferli, Monica, Witting‐Enriquez, Scarlet, Ugarte, Magdalena, Artuch, Rafael, Pérez, Belén
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.07.2022
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ISSN0009-9163
1399-0004
1399-0004
DOI10.1111/cge.14138

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Abstract Glucose transporter 1 deficiency syndrome (GLUT1DS) is a neurometabolic disorder caused by haploinsufficiency of the GLUT1 glucose transporter (encoded by SLC2A1) leading to defective glucose transport across the blood–brain barrier. This work describes the genetic analysis of 56 patients with clinical or biochemical GLUT1DS hallmarks. 55.4% of these patients had a pathogenic variant of SLC2A1, and 23.2% had a variant in one of 13 different genes. No pathogenic variant was identified for the remaining patients. Expression analysis of SLC2A1 indicated a reduction in SLC2A1 mRNA in patients with pathogenic variants of this gene, as well as in one patient with a pathogenic variant in SLC9A6, and in three for whom no candidate variant was identified. Thus, the clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1.
AbstractList Glucose transporter 1 deficiency syndrome (GLUT1DS) is a neurometabolic disorder caused by haploinsufficiency of the GLUT1 glucose transporter (encoded by SLC2A1) leading to defective glucose transport across the blood-brain barrier. This work describes the genetic analysis of 56 patients with clinical or biochemical GLUT1DS hallmarks. 55.4% of these patients had a pathogenic variant of SLC2A1, and 23.2% had a variant in one of 13 different genes. No pathogenic variant was identified for the remaining patients. Expression analysis of SLC2A1 indicated a reduction in SLC2A1 mRNA in patients with pathogenic variants of this gene, as well as in one patient with a pathogenic variant in SLC9A6, and in three for whom no candidate variant was identified. Thus, the clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1.Glucose transporter 1 deficiency syndrome (GLUT1DS) is a neurometabolic disorder caused by haploinsufficiency of the GLUT1 glucose transporter (encoded by SLC2A1) leading to defective glucose transport across the blood-brain barrier. This work describes the genetic analysis of 56 patients with clinical or biochemical GLUT1DS hallmarks. 55.4% of these patients had a pathogenic variant of SLC2A1, and 23.2% had a variant in one of 13 different genes. No pathogenic variant was identified for the remaining patients. Expression analysis of SLC2A1 indicated a reduction in SLC2A1 mRNA in patients with pathogenic variants of this gene, as well as in one patient with a pathogenic variant in SLC9A6, and in three for whom no candidate variant was identified. Thus, the clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1.
Glucose transporter 1 deficiency syndrome (GLUT1DS) is a neurometabolic disorder caused by haploinsufficiency of the GLUT1 glucose transporter (encoded by SLC2A1 ) leading to defective glucose transport across the blood–brain barrier. This work describes the genetic analysis of 56 patients with clinical or biochemical GLUT1DS hallmarks. 55.4% of these patients had a pathogenic variant of SLC2A1, and 23.2% had a variant in one of 13 different genes. No pathogenic variant was identified for the remaining patients. Expression analysis of SLC2A1 indicated a reduction in SLC2A1 mRNA in patients with pathogenic variants of this gene, as well as in one patient with a pathogenic variant in SLC9A6 , and in three for whom no candidate variant was identified. Thus, the clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1.
Glucose transporter 1 deficiency syndrome (GLUT1DS) is a neurometabolic disorder caused by haploinsufficiency of the GLUT1 glucose transporter (encoded by SLC2A1) leading to defective glucose transport across the blood–brain barrier. This work describes the genetic analysis of 56 patients with clinical or biochemical GLUT1DS hallmarks. 55.4% of these patients had a pathogenic variant of SLC2A1, and 23.2% had a variant in one of 13 different genes. No pathogenic variant was identified for the remaining patients. Expression analysis of SLC2A1 indicated a reduction in SLC2A1 mRNA in patients with pathogenic variants of this gene, as well as in one patient with a pathogenic variant in SLC9A6, and in three for whom no candidate variant was identified. Thus, the clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1.
Author Pérez, Belén
González Gutiérrez‐Solana, Luis
Couce, María L.
Pías‐Peleteiro, Leticia
Yubero, Delia
Witting‐Enriquez, Scarlet
López‐Laso, Eduardo
Azua Brea, Begoña
Artuch, Rafael
Leal, Fátima
Mateo‐Martínez, Gonzalo
Ugarte, Magdalena
Sánchez‐Lijarcio, Obdulia
Troncoso‐Schifferli, Monica
García‐Cazorla, Àngels
Ibáñez‐Micó, Salvador
AuthorAffiliation 1 Centro de Diagnóstico de Enfermedades Moleculares, Center of Molecular Biology Severo Ochoa (CBMSO) Autonomous University of Madrid, CIBERER, IdiPAZ Madrid Spain
2 Sant Joan de Déu Research Institute CIBERER Barcelona Spain
4 Neuropediatrics Unit Niño Jesús Clinical University Hospital, CIBERER Madrid Spain
3 Unit for the Diagnosis and Treatment of Congenital Metabolic Diseases, Clinical University Hospital of Santiago de Compostela, Health Research Institute of Santiago de Compostela University of Santiago de Compostela, CIBERER, MetabERN Santiago de Compostela Spain
7 Neuropaediatrics Unit, Department of Pediatrics Virgen de la Arrixaca University Hospital Murcia Spain
6 Pediatric Department Son Llàtzer Hospital Mallorca Spain
5 Paediatric Neurology Unit, Department of Paediatrics University Hospital Reina Sofía, Maimónides Institute of Biomedical Investigation of Cordoba (IMIBIC) and CIBERER Córdoba Spain
8 Neuropediatrics Unit Guadalajara Clinical University Hospital Guadalajara Spain
9
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CitedBy_id crossref_primary_10_1002_jimd_12554
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crossref_primary_10_1007_s00431_024_05657_6
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Issue 1
Keywords SLC2A1
GLUT1
GLUT1DS
hypoglycorrhachia
Language English
License Attribution-NonCommercial
2022 The Authors. Clinical Genetics published by John Wiley & Sons Ltd.
This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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Notes Rafael Artuch and Belén Pérez are joint senior authors.
Funding information
Carlos III Institute (ISCIII), European Regional Development Funds (PI19/01155); CIBERER (ERTRLE0I1); Consejería de Educación, Juventud y Deporte, Comunidad de Madrid (B2017/BMD3721); Fundación Isabel Gemio, the Fundación La Caixa (LCF/PR/PR16/11110018)
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Funding information Carlos III Institute (ISCIII), European Regional Development Funds (PI19/01155); CIBERER (ERTRLE0I1); Consejería de Educación, Juventud y Deporte, Comunidad de Madrid (B2017/BMD3721); Fundación Isabel Gemio, the Fundación La Caixa (LCF/PR/PR16/11110018)
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Snippet Glucose transporter 1 deficiency syndrome (GLUT1DS) is a neurometabolic disorder caused by haploinsufficiency of the GLUT1 glucose transporter (encoded by...
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StartPage 40
SubjectTerms Blood-brain barrier
Genetic analysis
Glucose transport
Glucose transporter
GLUT1
GLUT1DS
Haploinsufficiency
hypoglycorrhachia
Metabolic disorders
mRNA
Patients
Short Report
Short Reports
SLC2A1
Title The clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1
URI https://onlinelibrary.wiley.com/doi/abs/10.1111%2Fcge.14138
https://www.ncbi.nlm.nih.gov/pubmed/35388452
https://www.proquest.com/docview/2675825901
https://www.proquest.com/docview/2648064713
https://pubmed.ncbi.nlm.nih.gov/PMC9325084
Volume 102
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