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

Research output: Contribution to journalArticlepeer-review

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)1375-81
Number of pages7
JournalNature Genetics
Volume44
Issue number12
DOIs
Publication statusPublished - Dec 2012

Keywords / Materials (for Non-textual outputs)

  • Adolescent
  • Adult
  • Aged
  • Animals
  • Base Sequence
  • Child
  • Child, Preschool
  • Congenital Hypothyroidism
  • Exome
  • Ferrous Compounds
  • Genetic Diseases, X-Linked
  • Humans
  • Immunoglobulins
  • Infant
  • Male
  • Membrane Proteins
  • Mice
  • Middle Aged
  • Mutation
  • Pituitary Gland
  • Prolactin
  • Receptors, Thyrotropin-Releasing Hormone
  • Sequence Analysis, DNA
  • Syndrome
  • Testicular Diseases
  • Testis
  • Thyrotropin
  • Triiodothyronine
  • Young Adult

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