Albright hereditary osteodystrophy and del(2)(q37.3) in four unrelated individuals

M. C. Phelan, R. C. Rogers, K. B. Clarkson, F. P. Bowyer, M. A. Levine, L. L. Estabrooks, M. C. Severson, W. B. Dobyns

Research output: Contribution to journalArticle

Abstract

Albright hereditary osteodystrophy (AHO) is a condition with characteristic physical findings (short stature, obesity, round face, brachydactyly) but variable biochemical changes (pseudohypoparathyroidism, pseudopseudohypoparathyroidism). Most patients with AHO have decreased activity of the guanine nucleotide-binding protein (G(s) protein) that stimulates adenylyl cyclase. The gene encoding the α subunit of the G(s) protein (GNAS1) has been mapped to the long arm of chromosome 20. We describe 4 unrelated individuals with apparent AHO, associated with small terminal deletions of chromosome 2. All 4 patients had normal serum calcium levels consistent with pseudopseudohypoparathyroidism. Del(2)(q37) is the first consistent karyotypic abnormality that has been documented in AHO [Phelan et al., 1993: Am J Hum Genet 53:484]. The finding of the same small terminal deletion in 4 unrelated individuals with a similar phenotype suggests that a gene locus in the 2q37 region is important in the pathogenesis of Albright syndrome. The association of Albright syndrome and the GNAS1 locus on chromosome 20 is well documented. The observation of a second potential disease locus on chromosome 2 may help explain the heterogeneity observed in this disorder.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalAmerican Journal of Medical Genetics
Volume58
Issue number1
DOIs
StatePublished - 1995
Externally publishedYes

Fingerprint

Pseudopseudohypoparathyroidism
Polyostotic Fibrous Dysplasia
Chromosomes, Human, Pair 20
Chromosomes, Human, Pair 2
Brachydactyly
Viverridae
Guanine Nucleotides
Adenylyl Cyclases
Genes
Carrier Proteins
Proteins
Obesity
Observation
Calcium
Phenotype
Albright's hereditary osteodystrophy
Serum

Keywords

  • Albright hereditary osteodystrophy
  • del(2)(q37)
  • G(s) protein
  • pseudohypoparathyroidism
  • pseudopseudohypoparathyroidism

ASJC Scopus subject areas

  • Genetics(clinical)

Cite this

Phelan, M. C., Rogers, R. C., Clarkson, K. B., Bowyer, F. P., Levine, M. A., Estabrooks, L. L., ... Dobyns, W. B. (1995). Albright hereditary osteodystrophy and del(2)(q37.3) in four unrelated individuals. American Journal of Medical Genetics, 58(1), 1-7. https://doi.org/10.1002/ajmg.1320580102

Albright hereditary osteodystrophy and del(2)(q37.3) in four unrelated individuals. / Phelan, M. C.; Rogers, R. C.; Clarkson, K. B.; Bowyer, F. P.; Levine, M. A.; Estabrooks, L. L.; Severson, M. C.; Dobyns, W. B.

In: American Journal of Medical Genetics, Vol. 58, No. 1, 1995, p. 1-7.

Research output: Contribution to journalArticle

Phelan, MC, Rogers, RC, Clarkson, KB, Bowyer, FP, Levine, MA, Estabrooks, LL, Severson, MC & Dobyns, WB 1995, 'Albright hereditary osteodystrophy and del(2)(q37.3) in four unrelated individuals', American Journal of Medical Genetics, vol. 58, no. 1, pp. 1-7. https://doi.org/10.1002/ajmg.1320580102
Phelan, M. C. ; Rogers, R. C. ; Clarkson, K. B. ; Bowyer, F. P. ; Levine, M. A. ; Estabrooks, L. L. ; Severson, M. C. ; Dobyns, W. B. / Albright hereditary osteodystrophy and del(2)(q37.3) in four unrelated individuals. In: American Journal of Medical Genetics. 1995 ; Vol. 58, No. 1. pp. 1-7.
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