Thiamine Deficiency in Childhood with Attention to Genetic Causes: Survival and Outcome Predictors

Juan Dario Ortigoza-Escobar, Majid Alfadhel, Marta Molero-Luis, Niklas Darin, Ronen Spiegel, Irenaeus F. de Coo, Mike Gerards, Robert W. Taylor, Rafael Artuch, Marwan Nashabat, Pilar Rodriguez-Pombo, Brahim Tabarki, Belen Perez-Duenas*, Thiamine Deficiency Study Grp

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

40 Citations (Web of Science)

Abstract

Primary and secondary conditions leading to thiamine deficiency have overlapping features in children, presenting with acute episodes of encephalopathy, bilateral symmetric brain lesions, and high excretion of organic acids that are specific of thiamine-dependent mitochondrial enzymes, mainly lactate, alpha-ketoglutarate, and branched chain keto-acids. Undiagnosed and untreated thiamine deficiencies are often fatal or lead to severe sequelae. Herein, we describe the clinical and genetic characterization of 79 patients with inherited thiamine defects causing encephalopathy in childhood, identifying outcome predictors in patients with pathogenic SLC19A3 variants, the most common genetic etiology. We propose diagnostic criteria that will aid clinicians to establish a faster and accurate diagnosis so that early vitamin supplementation is considered.

Original languageEnglish
Pages (from-to)317-330
Number of pages14
JournalAnnals of Neurology
Volume82
Issue number3
DOIs
Publication statusPublished - Sep 2017

Keywords

  • BASAL GANGLIA DISEASE
  • EXOME SEQUENCING REVEALS
  • WERNICKE ENCEPHALOPATHY
  • LEIGH-SYNDROME
  • TRANSPORTER-2 DEFICIENCY
  • PYROPHOSPHOKINASE DEFICIENCY
  • MITOCHONDRIAL DISEASE
  • CELL TRANSPLANTATION
  • AUTISTIC-CHILD
  • BIOTIN

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