IGSF1基因新型变异导致的先天性中枢性甲状腺功能减退症:三例患者的病例系列。

IF 2.6 3区 医学 Q3 ENDOCRINOLOGY & METABOLISM
Helen MacGloin, Nadia Schoenmakers, Catherine Moorwood, Charles R Buchanan, Ved Bhushan Arya
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引用次数: 0

摘要

导读:先天性中枢性甲状腺功能减退症先天性中枢性甲状腺功能减退症可单独发生,也可与其他垂体激素缺陷同时发生。免疫球蛋白超家族成员1(IGSF1)基因的功能缺失突变会导致X连锁中枢性甲减,是中枢性甲减最常见的遗传病因。除中枢性甲状腺功能减退症外,一些 IGSF1 缺乏症患者还伴有低泌乳素血症、一过性和部分生长激素缺乏症、睾丸增大时间提前/正常但青春期睾酮升高延迟以及成人巨睾丸症。在这里,我们描述了三例由两个新型 IGSF1 基因突变引起的中枢性甲状腺功能减退症患者的病例系列:三名男性(包括两个兄弟姐妹)在 0.06 - 1.5 岁期间被诊断出患有中枢性甲状腺功能减退症。其他特征包括低泌乳素血症、皮质醇和生长激素-胰岛素样生长因子 1 轴正常、体重指数高、出生体重大于 0 SDS 和孤立性语言发育迟缓。基因检测发现了两个新的 IGSF1 突变[(c.1829G>A,p.W610* 和 c.3692G>A,p.(Cys123Tyr)]。这两个变异在 gnoMAD 数据库(约 90,000 个个体)中均未见报道,且预测为有害变异:结论:IGSF1的功能缺失突变是中枢性甲状腺功能减退症最常见的遗传病因。从大量的病例系列中对IGSF1缺乏症进行了详细的表型分析,从而为这些患者的临床治疗提出了建议。我们强调了延迟治疗中枢性甲状腺功能减退症(语言发育迟缓)的潜在不良后果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Congenital Central Hypothyroidism Caused by Novel Variants in IGSF1 Gene : Case Series of three patients.

Introduction: Congenital central hypothyroidism occurs either in isolation or in conjunction with other pituitary hormone deficits. Loss of function mutations in the immunoglobulin superfamily, member 1 (IGSF1) gene causes X-linked central hypothyroidism and represent the most common genetic cause of central hypothyroidism. In addition to central hypothyroidism, some patients with IGSF1 deficiency have hypoprolactinemia, transient and partial growth hormone deficiency, early/normal timing of testicular enlargement but delayed testosterone rise in puberty, and adult macro-orchidism. Here, we describe a case-series of three patients with central hypothyroidism caused by two novel IGSF1mutations.

Case presentation: Three males (including two siblings) were diagnosed with central hypothyroidism between 0.06 - 1.5 years of age. Additional features included hypoprolactinemia, normal cortisol and growth hormone - insulin like growth factor 1 axis, high body mass index, birth weight greater than 0 SDS and isolated speech delay. Genetic testing identified two novel IGSF1 mutations [(c.1829G>A, p.W610* and c.3692G>A, p.(Cys123Tyr)]. Both variants have not been reported in the gnoMAD database (~90,000 individuals) and are predicted deleterious.

Conclusions: Loss of function mutations in IGSF1 represent the most common genetic cause of central hypothyroidism Detailed phenotyping of IGSF1 deficiency from extensive case series have led to formulation of recommendations for clinical management of these patients. We have highlighted the potential adverse consequences of delayed treatment of CCH (speech delay).

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来源期刊
Hormone Research in Paediatrics
Hormone Research in Paediatrics ENDOCRINOLOGY & METABOLISM-PEDIATRICS
CiteScore
4.90
自引率
6.20%
发文量
88
审稿时长
4-8 weeks
期刊介绍: The mission of ''Hormone Research in Paediatrics'' is to improve the care of children with endocrine disorders by promoting basic and clinical knowledge. The journal facilitates the dissemination of information through original papers, mini reviews, clinical guidelines and papers on novel insights from clinical practice. Periodic editorials from outstanding paediatric endocrinologists address the main published novelties by critically reviewing the major strengths and weaknesses of the studies.
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