Cited by 246Genomic variations and chromosomal abnormalitiesGenetic Syndromes and ImprintingGenetics and Neurodevelopmental Disorders

The phenotypic manifestations of interstitial duplications of proximal 15q with special reference to the autistic spectrum disorders

Bolton, Patrick Farrar, Dennis, N.R., Browne, C.E., Thomas, N.S., Veltman, M.W.M., Thompson, R.J., Jacobs, P.·2001·American Journal of Medical Genetics

Abstract

This study investigated the phenotypic manifestations of interstitial duplications of chromosome 15 that involve the Prader‐Willi/Angelman syndrome critical region (PWACR). Twenty‐one affected individuals from six families were evaluated in detail, using standardized and semi‐standardized measures of intelligence, psychopathology, and physical anomalies. Special attention was placed on determining the prevalence of autism spectrum disorders as well as the relationship between the parental origin of the duplication and the phenotypic effects. Assessments of the affected individuals were compared with evaluations of the unaffected relatives from the same families. Results indicated that duplications in the region were associated with variable degrees of intellectual impairments and motor coordination problems. Four of the subjects received a diagnosis of pervasive developmental disorder. Three of these cases were probands and only one met criteria for classic autism. There was very little evidence of the duplication cosegregating with autism spectrum disorder diagnosis. Paternally inherited duplications were significantly less likely to give rise to phenotypic effects. The findings indicate that duplications in the PWACR give rise to developmental delay but not necessarily autism spectrum disorders. They also suggest that phenotypic expression is dependent on the parental origin of the duplication and implicate maternally active genes in the pathogenesis of the developmental impairments. Further research will be required to clarify the range and basis of the phenotypic manifestations. © 2001 Wiley‐Liss, Inc.

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Crossref · 10.1002/ajmg.1551

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Authors
Bolton, P. F., Dennis, N. R., Browne, C. E., Thomas, N. S., Veltman, M. W. M., Thompson, R. J., & Jacobs, P.
Affiliations
  • University of Cambridge (GB)
  • Princess Anne Hospital (GB)
  • Salisbury District Hospital (GB)
Corresponding author
Bolton, Patrick Farrar
Venue
American Journal of Medical Genetics
Publisher
Wiley
Published
2001-09-06
Volume
105
Issue
8
Pages
675-685
ISSN
  • 0148-7299 (ISSN-L)
  • 1096-8628
OpenAlex
W2157093495
Cited by
246
References
24
Citations by year
2026: 4 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 4 · 2017: 16 · 2016: 4 · 2015: 10 · 2014: 12 · 2013: 8 · 2012: 9
FWCI
5.82
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Medical Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • ePrints Soton (University of Southampton) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Syndromes and Imprinting
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
autism spectrum disorder, pervasive developmental disorders, intellectual disability, motor coordination deficits, phenotypic expression, developmental delay, co-segregation
MeSH terms
Adult, Autistic Disorder, Behavior, Child, Child Development Disorders, Pervasive, Child, Preschool, Chromosome Aberrations, Chromosomes, Human, Pair 15, Cognition, Cognition Disorders, Family Health, Female, Heterozygote, Humans, Intelligence Tests, Male, Pedigree, Phenotype, Psychomotor Performance, Twins, Monozygotic, Gene Duplication

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