Cited by 412Selenium in Biological SystemsThyroid Disorders and TreatmentsOrganoselenium and organotellurium chemistry

Mutations in SECISBP2 result in abnormal thyroid hormone metabolism

Dumitrescu, Alexandra M, Liao, Xiao-Hui, Abdullah, Mohamed S Y, Lado-Abeal, Joaquin, Majed, Fathia Abdul, Moeller, Lars C, Boran, Gerard, Schomburg, Lutz +2 more·2005·Nature Genetics

Abstract

Incorporation of selenocysteine (Sec), through recoding of the UGA stop codon, creates a unique class of proteins. Mice lacking tRNA(Sec) die in utero, but the in vivo role of other components involved in selenoprotein synthesis is unknown, and Sec incorporation defects have not been described in humans. Deiodinases (DIOs) are selenoproteins involved in thyroid hormone metabolism. We identified three of seven siblings with clinical evidence of abnormal thyroid hormone metabolism. Their fibroblasts showed decreased DIO2 enzymatic activity not linked to the DIO2 locus. Systematic linkage analysis of genes involved in DIO2 synthesis and degradation led to the identification of an inherited Sec incorporation defect, caused by a homozygous missense mutation in SECISBP2 (also called SBP2). An unrelated child with a similar phenotype was compound heterozygous with respect to mutations in SECISBP2. Because SBP2 is epistatic to selenoprotein synthesis, these defects had a generalized effect on selenoproteins. Incomplete loss of SBP2 function probably causes the mild phenotype.

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Crossref · 10.1038/ng1654

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  • Patients with SBP2 mutations have reduced levels of most selenoproteins and a multi-symptom disorder.

    “Patients with mutations in the SBP2 gene have been identified who have reduced amounts of most selenoproteins and displayed a multiple-symptom disorder [69, 70, 71, 72].”

    From Ferroptosis: Death by Lipid Peroxidation (2016) · cites this paper as [69]

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Authors
Dumitrescu, A. M., Liao, X.-H., Abdullah, M. S. Y., Lado-Abeal, J., Majed, F. A., Moeller, L. C., Boran, G., Schomburg, L., Weiss, R. E., & Refetoff, S.
Affiliations
  • University of Chicago (US)
  • Security Forces Hospital (SA)
  • Tallaght University Hospital (IE)
  • Charité – Universitätsmedizin Berlin (DE)
Corresponding author
Refetoff, Samuel
Venue
Nature Genetics
Published
2005-10-16
Volume
37
Issue
11
Pages
1247-1252
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2168714702
Cited by
412
References
27
Citations by year
2026: 9 · 2025: 15 · 2024: 18 · 2023: 12 · 2022: 21 · 2021: 22 · 2020: 14 · 2019: 21 · 2018: 17 · 2017: 18 · 2016: 25 · 2015: 27 · 2014: 21 · 2013: 17 · 2012: 17
FWCI
17.67
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Selenium in Biological Systems
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Organoselenium and organotellurium chemistry
Keywords
SBP2, selenocysteine incorporation, selenoprotein biosynthesis, thyroid hormone metabolism, type 2 deiodinase, DIO2, missense mutations, compound heterozygosity, epistasis, fibroblasts, inborn errors of metabolism
MeSH terms
Adolescent, Adult, Child, Child, Preschool, Female, Fibroblasts, Heterozygote, Homozygote, Humans, Iodide Peroxidase, Male, Pedigree, Skin, Thyroid Hormones, RNA-Binding Proteins, Mutation, Missense, Siblings

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