The Mutant Thyroid Hormone Receptor Beta R320P Causes Syndrome of Resistance to Thyroid Hormone. (31st December 2018)

• Record Type: Journal Article
• Authors: Kimura, Tetsuya; Hayashi, Yoshitaka; Tsukamoto, Yuka; Okamoto, Yasuyuki
• Other Names: Hershkovitz Eli Academic Editor.
• Is Part Of: Case reports in endocrinology. Volume 2018(2018)
• Publication Date: 2018-12-31
• Subjects: Endocrinology -- Periodicals; Endocrinology -- Case studies -- Periodicals; Endocrine glands -- Diseases -- Periodicals; Endocrinology; Endocrine System Diseases; Endocrine glands -- Diseases; Endocrinology; Electronic journals; Periodicals; Case studies; Periodicals; Case Reports; Fulltext; Internet Resources; Periodicals; 616.4
• DOI: 10.1155/2018/4081769
• Languages: English
• ISSNs: 2090-6501

Abstract

Abstract : A 31-year-old Japanese male patient with a history of atrial fibrillation showed elevated serum levels of free thyroxine and triiodothyronine and a normal level of thyrotropin. The same abnormal hormone pattern was also found in his son. These data indicated that the index patient and the son have thyroid hormone resistance syndrome. Exon sequencing using DNA from these two patients revealed that both patients harbored a heterozygous mutation in the THRB gene: G1244C in exon 9, which results in R320P substitution. Therefore, thyroid hormone resistance syndrome caused by THRB mutation (RTH β ) was diagnosed. The mutation of the 320 t h arginine to proline has not been found to date. In conclusion, herein, we have described the first case of RTH β that is associated with R320P mutation.