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Related Experiment Videos

Familial visceral neuropathy: a defined entity?

E C Roper1, A Gibson, M E McAlindon

  • 1Department of Clinical Genetics, Sheffield Children's Hospital, Sheffield, United Kingdom. emmaroper@gmail.com

American Journal of Medical Genetics. Part A
|August 10, 2005
PubMed
Summary

Familial visceral neuropathy (FVN) with neuronal intranuclear inclusions is a complex genetic disorder. This study reclassifies a family, revealing autosomal dominant inheritance with variable expression of FVN.

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Area of Science:

  • Genetics
  • Neurology
  • Gastroenterology

Background:

  • Familial visceral neuropathy (FVN) encompasses disorders affecting the myenteric plexus.
  • FVN with neuronal intranuclear inclusions presents a variable phenotype including gastrointestinal, neurological, and pupillary abnormalities.

Observation:

  • A four-generation family previously classified with autosomal recessive familial esophageal achalasia was re-examined.
  • New data, including affected offspring and parental symptoms, indicated a different inheritance pattern.

Findings:

  • The family's condition is reclassified as autosomal dominant inheritance for FVN with neuronal intranuclear inclusions.
  • Marked variation in clinical expression was observed among affected family members.

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Implications:

  • This reclassification refines the understanding of FVN inheritance patterns.
  • Highlights the importance of detailed family history and longitudinal observation in diagnosing heterogeneous genetic disorders.