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GnRH receptor mutations in isolated gonadotropic deficiency.

L Chevrier1, F Guimiot, N de Roux

  • 1INSERM U676, Avenir Team: Genetic and Physiology of Puberty Onset, Robert Debre Hospital, 48 Boulevard Serurier, 75019 Paris, France.

Molecular and Cellular Endocrinology
|June 8, 2011
PubMed
Summary

Mutations in the gonadotropin-releasing hormone receptor (GnRHR) gene cause isolated hypogonadotropic hypogonadism (IHH). This review correlates natural GnRHR mutations with variable phenotypes in gonadotropin deficiencies.

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Published on: September 20, 2021

Area of Science:

  • Endocrinology
  • Human Genetics
  • Reproductive Biology

Background:

  • The hypothalamo-pituitary axis, regulated by gonadotropin-releasing hormone (GnRH) and its receptor (GnRHR), controls gonadotropin secretion (LH and FSH).
  • Defects in this axis lead to isolated hypogonadotropic hypogonadism (IHH), impacting gonadal development and function.
  • Natural mutations in GnRH or GnRHR genes are known causes of IHH without anosmia.

Purpose of the Study:

  • To review and describe naturally occurring mutations in the GnRHR gene.
  • To correlate these mutations with the resulting phenotypes of IHH.
  • To understand the relationship between GnRHR mutations and the developmental stages of the GnRH system.

Main Methods:

  • Literature review of published natural GnRHR mutations.
  • Phenotypic analysis of patients with identified GnRHR mutations.
  • Correlation of mutation types with the severity of gonadotropin deficiency.

Main Results:

  • Several natural GnRHR mutations have been identified, leading to IHH.
  • These mutations result in variable phenotypes, from partial to complete gonadotropic deficiencies.
  • The functional impact of mutations on GnRHR inactivation correlates with clinical presentation.

Conclusions:

  • GnRHR mutations are a significant cause of IHH with diverse clinical outcomes.
  • Understanding these mutations aids in diagnosing and managing IHH.
  • Further research into GnRHR function and mutation effects can refine our knowledge of reproductive development.