The role of hypogonadism in Klinefelter Syndrome

Klinefelter syndrome (KS) (47, XXY) is the most abundant sex-chromosome disorder, and is a common cause of infertility and hypogonadism in men. Most men with KS go through life without knowing the diagnosis, as only 25% are diagnosed and only a few of these before puberty. Apart from hypogonadism an...

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Main Authors: Christian Høst, Anne Skakkeb'k, Kristian A Groth, Anders Bojesen
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2014-04-01
Series:Asian Journal of Andrology
Subjects:
Online Access:http://www.ajandrology.com/article.asp?issn=1008-682X;year=2014;volume=16;issue=2;spage=185;epage=191;aulast=H%F8st
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author Christian Høst
Anne Skakkeb'k
Kristian A Groth
Anders Bojesen
author_facet Christian Høst
Anne Skakkeb'k
Kristian A Groth
Anders Bojesen
author_sort Christian Høst
collection DOAJ
description Klinefelter syndrome (KS) (47, XXY) is the most abundant sex-chromosome disorder, and is a common cause of infertility and hypogonadism in men. Most men with KS go through life without knowing the diagnosis, as only 25% are diagnosed and only a few of these before puberty. Apart from hypogonadism and azoospermia, most men with KS suffer from some degree of learning disability and may have various kinds of psychiatric problems. The effects of long-term hypogonadism may be diffi cult to discern from the gene dose effect of the extra X-chromosome. Whatever the cause, alterations in body composition, with more fat and less muscle mass and diminished bone mineral mass, as well as increased risk of metabolic consequences, such as type 2 diabetes and the metabolic syndrome are all common in KS. These fi ndings should be a concern as they are not simply laboratory fi ndings; epidemiological studies in KS populations show an increased risk of both hospitalization and death from various diseases. Testosterone treatment should be offered to KS patients from early puberty, to secure a proper masculine development, nonetheless the evidence is weak or nonexisting, since no randomized controlled trials have ever been published. Here, we will review the current knowledge of hypogonadism in KS and the rationale for testosterone treatment and try to give our best recommendations for surveillance of this rather common, but often ignored, syndrome.
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spelling doaj.art-40b6f7a997634222a8740edb12e4ca7d2022-12-22T03:10:58ZengWolters Kluwer Medknow PublicationsAsian Journal of Andrology1008-682X1745-72622014-04-0116218519110.4103/1008-682X.122201The role of hypogonadism in Klinefelter SyndromeChristian HøstAnne Skakkeb'kKristian A GrothAnders BojesenKlinefelter syndrome (KS) (47, XXY) is the most abundant sex-chromosome disorder, and is a common cause of infertility and hypogonadism in men. Most men with KS go through life without knowing the diagnosis, as only 25% are diagnosed and only a few of these before puberty. Apart from hypogonadism and azoospermia, most men with KS suffer from some degree of learning disability and may have various kinds of psychiatric problems. The effects of long-term hypogonadism may be diffi cult to discern from the gene dose effect of the extra X-chromosome. Whatever the cause, alterations in body composition, with more fat and less muscle mass and diminished bone mineral mass, as well as increased risk of metabolic consequences, such as type 2 diabetes and the metabolic syndrome are all common in KS. These fi ndings should be a concern as they are not simply laboratory fi ndings; epidemiological studies in KS populations show an increased risk of both hospitalization and death from various diseases. Testosterone treatment should be offered to KS patients from early puberty, to secure a proper masculine development, nonetheless the evidence is weak or nonexisting, since no randomized controlled trials have ever been published. Here, we will review the current knowledge of hypogonadism in KS and the rationale for testosterone treatment and try to give our best recommendations for surveillance of this rather common, but often ignored, syndrome.http://www.ajandrology.com/article.asp?issn=1008-682X;year=2014;volume=16;issue=2;spage=185;epage=191;aulast=H%F8standrogen receptorbody compositionbone densityhypogonadisminfertilityKlinefelter syndromelearning disordersmaletestosterone
spellingShingle Christian Høst
Anne Skakkeb'k
Kristian A Groth
Anders Bojesen
The role of hypogonadism in Klinefelter Syndrome
Asian Journal of Andrology
androgen receptor
body composition
bone density
hypogonadism
infertility
Klinefelter syndrome
learning disorders
male
testosterone
title The role of hypogonadism in Klinefelter Syndrome
title_full The role of hypogonadism in Klinefelter Syndrome
title_fullStr The role of hypogonadism in Klinefelter Syndrome
title_full_unstemmed The role of hypogonadism in Klinefelter Syndrome
title_short The role of hypogonadism in Klinefelter Syndrome
title_sort role of hypogonadism in klinefelter syndrome
topic androgen receptor
body composition
bone density
hypogonadism
infertility
Klinefelter syndrome
learning disorders
male
testosterone
url http://www.ajandrology.com/article.asp?issn=1008-682X;year=2014;volume=16;issue=2;spage=185;epage=191;aulast=H%F8st
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