ArticleJournal of endocrinological investigation2020
Partial thyroxine-binding globulin deficiency in a family with coding region mutations in the TBG gene.
Article in Journal of endocrinological investigation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 4 citations in OpenAlex.
- Identification of recurrent pathogenic SERPINA7 mutation causing coexistence of TBG-CD and hypothyroidism in Indian pedigrees: in Silico structural analysis of mutant TBG and literature reappraisal.Thyroid research · 2026Article
- Partial Thyroid Hormone-Binding Globulin Deficiency: A Case Report and Literature Review.Diabetes, metabolic syndrome and obesity : targets and therapy · 2023Article
- Compound hemizygous variants in SERPINA7 gene cause thyroxine-binding globulin deficiency.Molecular genetics & genomic medicine · 2021Article
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12 authors at 3 institutions in 1 country.
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Abstract
purposeT4-binding globulin (TBG) is the main thyroid hormone (TH) transporter present in human serum. Inherited thyroxine-binding globulin (TBG) deficiency is caused by mutations in the TBG (SERPINA7) gene, which is located on the X chromosome. This study was performed to report and evaluate coding region mutations in TBG gene for partial thyroxine-binding globulin deficiency.
methodsA pedigree spanning four generations is described in this study. The proband is a female with partial TBG deficiency. All members of this pedigree underwent thyroid function tests, while Sanger sequencing was used to identify the TBG gene mutations. Bioinformatics databases were used to evaluate the deleterious effects of the mutation(s). Two hundred and seven unrelated individuals were used to evaluate the thyroid function of individuals with different TBG mutations. A one-way ANOVA was used to analyze the impact of the TBG mutations on thyroid function.
resultsTBG gene sequencing results revealed that the proband had a novel mutation in codon 27 leading to alanine to valine substitution (p.A27V). This mutation was associated with lower serum T4 levels (p < 0.0001) when compared to the groups that did not carry the mutation. The previously reported p.L283F mutation was also found in the proband. The hemizygous p.L283F individuals presenting with lower T4 serum and TBG levels (p < 0.001) when compared to wildtype males and females. Both mutations were deleterious upon SIFT and PolyPhen-2 evaluation.
conclusionAssociated with partial thyroxine-binding globulin deficiency, this study reports a novel p.A27V mutation in the TBG gene.
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