Loss-of-function mutations in IGSF1 cause an X-linked syndrome of central hypothyroidism and testicular enlargement

Yu Sun, Beata Bak, Nadia Schoenmakers, A. S. Paul van Trotsenburg, Wilma Oostdijk, Peter Voshol, Emma Cambridge, Jacqueline K. White, Paul le Tissier, S. Neda Mousavy Gharavy, Juan P. Martinez-Barbera, Wilhelmina H. Stokvis-Brantsma, Thomas Vulsma, Marlies J. Kempers, Luca Persani, Irene Campi, Marco Bonomi, Paolo Beck-Peccoz, Hongdong Zhu, Timothy M. E. DavisAnita C. S. Hokken-Koelega, Daria Gorbenko del Blanco, Jayanti J. Rangasami, Claudia A. L. Ruivenkamp, Jeroen F. J. Laros, Marjolein Kriek, Sarina G. Kant, Cathy A. J. Bosch, Nienke R. Biermasz, Natasha M. Appelman-Dijkstra, Eleonora P. Corssmit, Guido C. J. Hovens, Alberto M. Pereira, Johan T. den Dunnen, Michael G. Wade, Martijn H. Breuning, Raoul C. Hennekam, Krishna Chatterjee, Mehul T. Dattani, Jan M. Wit, Daniel J. Bernard

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162 Citations (Scopus)

Abstract

Congenital central hypothyroidism occurs either in isolation or in conjunction with other pituitary hormone deficits. Using exome and candidate gene sequencing, we identified 8 distinct mutations and 2 deletions in IGSF1 in males from 11 unrelated families with central hypothyroidism, testicular enlargement and variably low prolactin concentrations. IGSF1 is a membrane glycoprotein that is highly expressed in the anterior pituitary gland, and the identified mutations impair its trafficking to the cell surface in heterologous cells. Igsf1-deficient male mice show diminished pituitary and serum thyroid-stimulating hormone (TSH) concentrations, reduced pituitary thyrotropin-releasing hormone (TRH) receptor expression, decreased triiodothyronine concentrations and increased body mass. Collectively, our observations delineate a new X-linked disorder in which loss-of-function mutations in IGSF1 cause central hypothyroidism, likely secondary to an associated impairment in pituitary TRH signaling
Original languageEnglish
Pages (from-to)1375-1381
JournalNature Genetics
Volume44
Issue number12
DOIs
Publication statusPublished - 2012

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