Cited by 242Genetics and Neurodevelopmental DisordersFetal and Pediatric Neurological DisordersAutism Spectrum Disorder Research

Neurodevelopmental effects of the FMR-1 full mutation in humans

Reiss, Allan L., Abrams, Michael T., Greenlaw, Ronald, Freund, Lisa, Denckla, Martha B.·1995·Nature Medicine

Abstract

Brain dysfunction is the most important sequelae of the fragile X (FMR-1) mutation, the most common heritable cause of developmental disability. Using magnetic resonance imaging (MRI) and quantitative morphometry, we have compared the neuroanatomy of 51 individuals with an FMR-1 mutation with matched controls and showed that subjects with an FMR-1 mutation have increased volume of the caudate nucleus and, in males, the lateral ventricle. Both caudate and lateral ventricular volumes are correlated with IQ. Caudate volume is also correlated with the methylation status of the FMR-1 gene. Neuroanatomical differences between two monozygotic twins with an FMR-1 mutation who are discordant for mental retardation are localized to the cerebellum, lateral ventricles and subcortical nuclei. These findings suggest that the FMR-1 mutation causing the fragile X syndrome leads to observable changes in neuroanatomy that may be relevant to the neurodevelopmental disability and behavioural problems observed in affected individuals.

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Crossref · 10.1038/nm0295-159

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  • MRI studies have found that individuals with Fragile X syndrome have enlarged lateral ventricles and increased caudate nucleus volumes relative to control subjects.

    “MRI studies have found that individuals with FXS have enlarged lateral ventricles and increased caudate nucleus volumes relative to control subjects (Reiss et al., 1995).”

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Authors
Reiss, A. L., Abrams, M. T., Greenlaw, R., Freund, L., & Denckla, M. B.
Affiliations
Kennedy Krieger Institute (US)
Venue
Nature Medicine
Published
1995-02
Volume
1
Issue
2
Pages
159-167
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2082078122
Cited by
242
References
53
Citations by year
2026: 1 · 2025: 2 · 2024: 2 · 2023: 4 · 2022: 1 · 2021: 2 · 2020: 5 · 2019: 2 · 2018: 2 · 2017: 4 · 2016: 5 · 2015: 7 · 2014: 10 · 2013: 10 · 2012: 6
FWCI
8.94
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5p50hd025806-05)
  • National Institute of Mental Health (MH01142, K02MH001142)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD24061, HD25806, P30HD024061)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
Keywords
fragile X syndrome, neurodevelopmental disorders, caudate nucleus volume, lateral ventricle volume, cerebellum, IQ, monozygotic twins, brain structure
MeSH terms
Adolescent, Adult, Age Factors, Brain, Child, Child, Preschool, Diseases in Twins, DNA, Female, Fragile X Syndrome, Humans, Intelligence, Magnetic Resonance Imaging, Male, Intellectual Disability, Methylation, Mutation, Nerve Tissue Proteins, Sex Factors, Twins, Monozygotic, Matched-Pair Analysis, RNA-Binding Proteins, Fragile X Messenger Ribonucleoprotein 1

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