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Gonadotropin-Releasing Hormone Deficiency in the Human (Idiopathic Hypogonadotropic Hypogonadism and Kallmann’s Syndrome): Pathophysiological and Genetic Considerations

Seminara, Stephanie B., Hayes, Frances J., Crowley, William F.·1998·Endocrine Reviews

Abstract

INITIATION and maintenance of the reproductive axis in the human are contingent upon the pulsatile secretion of GnRH from the hypothalamus. Isolated GnRH deficiency is the clinical syndrome that results from failure of this normal pattern of episodic GnRH secretion to occur. It is characterized by 1) complete or partial absence of any endogenous GnRH-induced LH pulsations (1–5); 2) normalization of pituitary and gonadal function in response to physiological regimens of exogenous GnRH replacement (3, 4, 6–9); 3) normal findings on radiographic imaging of the hypothalamic-pituitary region, and; 4) normal baseline and reserve testing of the remainder of the hypothalamic-pituitary axes. Typically, patients with hypogonadotropic hypogonadism and anosmia have been given the diagnosis of Kallmann’s syndrome (KS), and those with normal olfaction have been diagnosed as idiopathic hypogonadotropic hypogonadism (IHH). However, both of these presentations (i.e., with and without anosmia) can occur in the same family with this disorder, thus demonstrating the variability of expression of this trait. Isolated GnRH deficiency is remarkable for its heterogeneity of clinical presentation (1, 3–5, 10, 11), variable modes of inheritance (11–17), and inconsistent association with other anomalies (11, 12, 16, 18–20).

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Metadata

Authors
Seminara, S. B., Hayes, F. J., & Crowley, W. F.
Venue
Endocrine Reviews
Published
1998-10-01
Volume
19
Issue
5
Pages
521-539
ISSN
  • 0163-769X (ISSN-L)
  • 1945-7189
OpenAlex
W1989234389
Cited by
414
References
18
FWCI
10.59
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Gonadotropin-Releasing Hormone Deficiency in the Human (Idiopathic Hypogonadotropic Hypogonadism and Kallmann’s Syndrome): Pathophysiological and Genetic Considerations. https://app.cochat.ai/papers/10.1210/edrv.19.5.0344
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Seminara, S. B., Hayes, F. J., & Crowley, W. F. (1998). Gonadotropin-Releasing Hormone Deficiency in the Human (Idiopathic Hypogonadotropic Hypogonadism and Kallmann’s Syndrome): Pathophysiological and Genetic Considerations. Endocrine Reviews. https://doi.org/10.1210/edrv.19.5.0344

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