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Unique skin changes in a case of Albright hereditary osteodystrophy caused by a rare GNAS1 mutation.
Br J Dermatol. 2010 Mar; 162(3):690-4.BJ

Abstract

Albright hereditary osteodystrophy (AHO) is a syndrome of short stature, obesity, brachydactyly and subcutaneous calcifications with pseudohypoparathyroidism (PHP; leading to hypocalcaemia, hyperphosphataemia and elevated levels of parathyroid hormone, PTH). It was first described over 60 years ago. Since then, much has been learned about the aetiology of AHO which has been shown to be caused by heterozygous loss-of-function mutations within the GNAS1 gene. GNAS1 is subject to imprinting leading to phenotypic heterogeneity within kindreds with one mutation. Patients with AHO often present with symptoms of hypocalcaemia and/or with subcutaneous calcifications. The latter is thought to be the typical skin abnormality in AHO. We describe a family with AHO and hormone resistance (PHP type Ia) resulting from a rare mutation in GNAS1. The proband presented with small subcutaneous calcifications in the helix of the right ear and concentrated in a sharply demarcated zone of subcutaneous and dermal hypoplasia. This abnormality has so far not been described in patients with AHO. We speculate on the mechanism of dermal hypoplasia and resistance to PTH and suggest that subcutanous or dermal hypoplasia might be another feature which can be present in patients with AHO.

Authors+Show Affiliations

Department of Pediatrics, Maastricht University Medical Center, AZ Maastricht, The Netherlands.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Case Reports
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19863504

Citation

Klaassens, M, et al. "Unique Skin Changes in a Case of Albright Hereditary Osteodystrophy Caused By a Rare GNAS1 Mutation." The British Journal of Dermatology, vol. 162, no. 3, 2010, pp. 690-4.
Klaassens M, Blom EW, Schrander JJ, et al. Unique skin changes in a case of Albright hereditary osteodystrophy caused by a rare GNAS1 mutation. Br J Dermatol. 2010;162(3):690-4.
Klaassens, M., Blom, E. W., Schrander, J. J., Ris-Stalpers, C., Nieuwenhuijzen Kruseman, A. C., van Steensel, M. A., & Schrander-Stumpel, C. T. (2010). Unique skin changes in a case of Albright hereditary osteodystrophy caused by a rare GNAS1 mutation. The British Journal of Dermatology, 162(3), 690-4. https://doi.org/10.1111/j.1365-2133.2009.09543.x
Klaassens M, et al. Unique Skin Changes in a Case of Albright Hereditary Osteodystrophy Caused By a Rare GNAS1 Mutation. Br J Dermatol. 2010;162(3):690-4. PubMed PMID: 19863504.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Unique skin changes in a case of Albright hereditary osteodystrophy caused by a rare GNAS1 mutation. AU - Klaassens,M, AU - Blom,E W, AU - Schrander,J J P, AU - Ris-Stalpers,C, AU - Nieuwenhuijzen Kruseman,A C, AU - van Steensel,M A M, AU - Schrander-Stumpel,C T R M, Y1 - 2009/10/26/ PY - 2009/10/30/entrez PY - 2009/10/30/pubmed PY - 2010/9/21/medline SP - 690 EP - 4 JF - The British journal of dermatology JO - Br. J. Dermatol. VL - 162 IS - 3 N2 - Albright hereditary osteodystrophy (AHO) is a syndrome of short stature, obesity, brachydactyly and subcutaneous calcifications with pseudohypoparathyroidism (PHP; leading to hypocalcaemia, hyperphosphataemia and elevated levels of parathyroid hormone, PTH). It was first described over 60 years ago. Since then, much has been learned about the aetiology of AHO which has been shown to be caused by heterozygous loss-of-function mutations within the GNAS1 gene. GNAS1 is subject to imprinting leading to phenotypic heterogeneity within kindreds with one mutation. Patients with AHO often present with symptoms of hypocalcaemia and/or with subcutaneous calcifications. The latter is thought to be the typical skin abnormality in AHO. We describe a family with AHO and hormone resistance (PHP type Ia) resulting from a rare mutation in GNAS1. The proband presented with small subcutaneous calcifications in the helix of the right ear and concentrated in a sharply demarcated zone of subcutaneous and dermal hypoplasia. This abnormality has so far not been described in patients with AHO. We speculate on the mechanism of dermal hypoplasia and resistance to PTH and suggest that subcutanous or dermal hypoplasia might be another feature which can be present in patients with AHO. SN - 1365-2133 UR - https://www.unboundmedicine.com/medline/citation/19863504/Unique_skin_changes_in_a_case_of_Albright_hereditary_osteodystrophy_caused_by_a_rare_GNAS1_mutation_ L2 - https://doi.org/10.1111/j.1365-2133.2009.09543.x DB - PRIME DP - Unbound Medicine ER -