A Japanese patient with congenital central hypothyroidism caused by a novel IGSF1 mutation

A Japanese patient with congenital central hypothyroidism caused by a novel IGSF1 mutation AbstractBackground:IGSF1 abnormality causes diverse symptoms, including congenital central hypothyroidism (CCH), prolactin hyposecretion, testicular enlargement and delayed puberty.Case presentation:Here, we report a case of a male patient who visited our hospital with a chief complaint of abdominal pain and short stature, in whom we identified a novel IGSF1 mutation. He was closely examined because of chronic constipation since infancy, persistent abdominal pain at 14 years of age and marked short stature (−4.7 standard deviation [SD] for normal Japanese boys). He was diagnosed with CCH. Decreased prolactin (PRL) secretion was also observed. IGSF1 analysis revealed a novel mutation at the splicing donor site (c.2065+1G>A) in intron 11. In silico analysis predicted this mutation to be a non-functional splice donor site. After thyroid hormone replacement, his thyroid function, constipation and growth rate improved.Conclusions:This is the first report of a patient in whom constipation and short stature led to a diagnosis of CCH with a novel IGSF1 mutation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Pediatric Endocrinology and Metabolism de Gruyter

A Japanese patient with congenital central hypothyroidism caused by a novel IGSF1 mutation

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Publisher
de Gruyter
Copyright
©2018 Walter de Gruyter GmbH, Berlin/Boston
ISSN
2191-0251
eISSN
2191-0251
D.O.I.
10.1515/jpem-2017-0144
Publisher site
See Article on Publisher Site

Abstract

AbstractBackground:IGSF1 abnormality causes diverse symptoms, including congenital central hypothyroidism (CCH), prolactin hyposecretion, testicular enlargement and delayed puberty.Case presentation:Here, we report a case of a male patient who visited our hospital with a chief complaint of abdominal pain and short stature, in whom we identified a novel IGSF1 mutation. He was closely examined because of chronic constipation since infancy, persistent abdominal pain at 14 years of age and marked short stature (−4.7 standard deviation [SD] for normal Japanese boys). He was diagnosed with CCH. Decreased prolactin (PRL) secretion was also observed. IGSF1 analysis revealed a novel mutation at the splicing donor site (c.2065+1G>A) in intron 11. In silico analysis predicted this mutation to be a non-functional splice donor site. After thyroid hormone replacement, his thyroid function, constipation and growth rate improved.Conclusions:This is the first report of a patient in whom constipation and short stature led to a diagnosis of CCH with a novel IGSF1 mutation.

Journal

Journal of Pediatric Endocrinology and Metabolismde Gruyter

Published: Mar 28, 2018

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