A Novel Gene Mutation in a Patient with Sporadic Hypophosphatemic Rickets

Phosphate regulating gene with homologies to endopeptidases on the X-chromosome (PHEX) is a common cause of X-linked hypophosphatemic (XLH) rickets. Diverse PHEX gene mutations have been reported; however, gene mutations in sporadic rickets are less common than in XLH rickets. Herein, we describe a...

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Main Authors: Yea Eun Kang, Jun Hwa Hong, Jimin Kim, Kyong Hye Joung, Hyun Jin Kim, Bon Jeong Ku, Koon Soon Kim
Format: Article
Language:English
Published: Korean Endocrine Society 2014-06-01
Series:Endocrinology and Metabolism
Subjects:
Online Access:http://e-enm.org/Synapse/Data/PDFData/2008ENM/enm-29-195.pdf
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author Yea Eun Kang
Jun Hwa Hong
Jimin Kim
Kyong Hye Joung
Hyun Jin Kim
Bon Jeong Ku
Koon Soon Kim
author_facet Yea Eun Kang
Jun Hwa Hong
Jimin Kim
Kyong Hye Joung
Hyun Jin Kim
Bon Jeong Ku
Koon Soon Kim
author_sort Yea Eun Kang
collection DOAJ
description Phosphate regulating gene with homologies to endopeptidases on the X-chromosome (PHEX) is a common cause of X-linked hypophosphatemic (XLH) rickets. Diverse PHEX gene mutations have been reported; however, gene mutations in sporadic rickets are less common than in XLH rickets. Herein, we describe a 50-year-old female patient with sporadic hypophosphatemic rickets harboring a novel splicing-site mutation in the PHEX gene (c.663+1G>A) at the exon 5-intron 5 boundary. The patient had recently suffered from right thigh pain and an aggravated waddling gait. She also presented with very short stature, generalized bone pain, and muscle weakness. Despite low serum phosphate levels, her phosphate reabsorption rate was lower than normal. Additionally, her 1,25-dihydroxyvitamin D3 concentration was lower than normal, although FGF23 level was normal. After treatment with alfacalcidol and elemental phosphate, her rachitic symptoms subsided, and callus formation was observed in the fracture site on the right femur.
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spelling doaj.art-c0c32554043c41c7b47cc1a85068108d2022-12-21T23:32:46ZengKorean Endocrine SocietyEndocrinology and Metabolism2093-596X2093-59782014-06-0129219520110.3803/EnM.2014.29.2.19521706A Novel Gene Mutation in a Patient with Sporadic Hypophosphatemic RicketsYea Eun KangJun Hwa HongJimin KimKyong Hye JoungHyun Jin KimBon Jeong KuKoon Soon KimPhosphate regulating gene with homologies to endopeptidases on the X-chromosome (PHEX) is a common cause of X-linked hypophosphatemic (XLH) rickets. Diverse PHEX gene mutations have been reported; however, gene mutations in sporadic rickets are less common than in XLH rickets. Herein, we describe a 50-year-old female patient with sporadic hypophosphatemic rickets harboring a novel splicing-site mutation in the PHEX gene (c.663+1G>A) at the exon 5-intron 5 boundary. The patient had recently suffered from right thigh pain and an aggravated waddling gait. She also presented with very short stature, generalized bone pain, and muscle weakness. Despite low serum phosphate levels, her phosphate reabsorption rate was lower than normal. Additionally, her 1,25-dihydroxyvitamin D3 concentration was lower than normal, although FGF23 level was normal. After treatment with alfacalcidol and elemental phosphate, her rachitic symptoms subsided, and callus formation was observed in the fracture site on the right femur.http://e-enm.org/Synapse/Data/PDFData/2008ENM/enm-29-195.pdfPhosphate regulating gene with homologies to endopeptidases on the X-chromosomeRickets, hypophosphatemicFibroblast growth factor 23
spellingShingle Yea Eun Kang
Jun Hwa Hong
Jimin Kim
Kyong Hye Joung
Hyun Jin Kim
Bon Jeong Ku
Koon Soon Kim
A Novel Gene Mutation in a Patient with Sporadic Hypophosphatemic Rickets
Endocrinology and Metabolism
Phosphate regulating gene with homologies to endopeptidases on the X-chromosome
Rickets, hypophosphatemic
Fibroblast growth factor 23
title A Novel Gene Mutation in a Patient with Sporadic Hypophosphatemic Rickets
title_full A Novel Gene Mutation in a Patient with Sporadic Hypophosphatemic Rickets
title_fullStr A Novel Gene Mutation in a Patient with Sporadic Hypophosphatemic Rickets
title_full_unstemmed A Novel Gene Mutation in a Patient with Sporadic Hypophosphatemic Rickets
title_short A Novel Gene Mutation in a Patient with Sporadic Hypophosphatemic Rickets
title_sort novel gene mutation in a patient with sporadic hypophosphatemic rickets
topic Phosphate regulating gene with homologies to endopeptidases on the X-chromosome
Rickets, hypophosphatemic
Fibroblast growth factor 23
url http://e-enm.org/Synapse/Data/PDFData/2008ENM/enm-29-195.pdf
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