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Nonautoimmune hyperthyroidism caused by activating mutations in the gene is a rare condition. In this study, we report a five-year-old girl diagnosed with nonautoimmune hyperthyroidism and tall stature harboring a somatic mosaic gain-of-function mutation in the gene (NM_080425.3: c.2530C>T;p.Arg844Cys previously reported as NM_000516.5:c.601C>T;p.Arg201Cys) and referred to thereafter as R201C, in three of four quadrants of the thyroid gland. Provision of a molecular diagnosis may avoid unnecessary complete ablation of the thyroid gland.
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http://dx.doi.org/10.1089/thy.2019.0471 | DOI Listing |
AACE Clin Case Rep
December 2024
Kettering Health Miamisburg, Internal Medicine Clinic, Miamisburg, Ohio.
Background/objective: Disseminated thyroid autonomy (DTA) and seronegative Graves' disease are rare causes of hyperthyroidism with similar clinical presentations. This case report highlights the diagnostic challenges between these entities.
Case Presentation: A 35-year-old male presented with palpitations, diaphoresis, and a small goiter.
Rep Biochem Mol Biol
July 2024
Department of Chemistry, Al-lmamin Al-Kadhumain Medical City Hospital, Baghdad, Iraq.
Background: Graves' disease (GD) is the most frequent reason for hyperthyroidism, which is brought on by an excess of thyroid hormone and a form of autoimmune thyroid disease (AITD). Patients with GD have higher levels of thyroid receptor antibody (TRAb). The current study, investigates the impact of excessive thyroid hormone production on glucose and cholesterol metabolism in thyroid disorders, particularly focusing on GD.
View Article and Find Full Text PDFHorm Res Paediatr
February 2025
Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan.
Introduction: Non-autoimmune hyperthyroidism (NAH) is a rare genetic disorder caused by germline-activating variants in the TSH receptor (TSHR) gene. While most NAH-related TSHR variants are located in the seven-transmembrane domain (7TMD), three variants (p.Leu267Phe, p.
View Article and Find Full Text PDFInt Immunopharmacol
December 2024
Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China. Electronic address:
Background: Integrins are upregulated on endothelial cells and T-lymphocytes in autoimmune thyroid disease (AITD), potentially contributing to immune response localization. The role of integrins on B-cells in AITD remains unclear.
Methods: Peripheral blood samples were collected from healthy controls (n = 56), patients with Graves' disease (GD) (n = 37) and Hashimoto's thyroiditis (HT) (n = 52).
JCEM Case Rep
October 2024
Center for Excellence in Thyroid Care, Kuma Hospital, Kobe 650-0011, Japan.
Familial nonautoimmune hyperthyroidism (NAH) is a rare type of autosomal dominant hyperthyroidism caused by constitutively active pathogenic variants of the thyrotropin receptor () gene. Although affected family members present with varied levels of hyperthyroid features, even when the same pathogenic variant is present, total thyroidectomy followed by radioiodine therapy is recommended for long-term management. Herein, we present the case of an 18-year-old proband and her family members with NAH (TSHR-I640V), who presented with diverse thyroid dysfunctions: fluctuations between euthyroid and subclinical hyperthyroidism, mild hyperthyroidism, and overt hyperthyroidism.
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