Maternal origin of 15q11-13 deletions in Angelman syndrome suggests a role for genomic imprinting

C. A. Williams, R. T. Zori, J. W. Stone, B. A. Gray, E. S. Cantu, Harry Ostrer

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Six persons with the classical Angelman syndrome (AS) phenotype and de novo deletions of chromosome 15q11-q13 were studied to determine the parental origin of the chromosome deletion. Four of the 6 patients had informative cytogenetic studies and all demonstrated maternal inheritance of the deletion. These findings, together with other reported cases of the origin of the chromosome 15 deletion in AS, suggest that deletion of the maternally contributed chromosome leads to the AS phenotype. This contrasts with the Prader-Willi syndrome (PWS) in which a similar deletion of the paternally contributed chromosome 15 is observed. In deletion cases, a parental gamete effect such as genomic imprinting may be the best model to explain why apparently identical 15q11-q13 deletions may develop the different phenotypes of AS or PWS.

Original languageEnglish (US)
Pages (from-to)350-353
Number of pages4
JournalAmerican Journal of Medical Genetics
Volume35
Issue number3
StatePublished - 1990
Externally publishedYes

Fingerprint

Angelman Syndrome
Genomic Imprinting
Chromosome Deletion
Mothers
Prader-Willi Syndrome
Chromosomes, Human, Pair 15
Phenotype
Germ Cells
Cytogenetics
Chromosomes

Keywords

  • Del(15),chromosome 15
  • Prader-Willi syndrome

ASJC Scopus subject areas

  • Genetics(clinical)

Cite this

Williams, C. A., Zori, R. T., Stone, J. W., Gray, B. A., Cantu, E. S., & Ostrer, H. (1990). Maternal origin of 15q11-13 deletions in Angelman syndrome suggests a role for genomic imprinting. American Journal of Medical Genetics, 35(3), 350-353.

Maternal origin of 15q11-13 deletions in Angelman syndrome suggests a role for genomic imprinting. / Williams, C. A.; Zori, R. T.; Stone, J. W.; Gray, B. A.; Cantu, E. S.; Ostrer, Harry.

In: American Journal of Medical Genetics, Vol. 35, No. 3, 1990, p. 350-353.

Research output: Contribution to journalArticle

Williams, C. A. ; Zori, R. T. ; Stone, J. W. ; Gray, B. A. ; Cantu, E. S. ; Ostrer, Harry. / Maternal origin of 15q11-13 deletions in Angelman syndrome suggests a role for genomic imprinting. In: American Journal of Medical Genetics. 1990 ; Vol. 35, No. 3. pp. 350-353.
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