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Stuttering: Genetic updates and a case report.

Nayerossadat Nouri1, Nargesossadat Nouri, Hossein Abdali

  • 1Molecular Genetic Laboratory, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran.

Advanced Biomedical Research
|December 5, 2012
PubMed
Summary
This summary is machine-generated.

Developmental stuttering, a speech disorder affecting millions, shows a strong genetic link. This family study suggests an autosomal recessive inheritance pattern for stuttering, challenging multifactorial disorder classifications.

Keywords:
Case reportgeneticinheritancestuttering

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Area of Science:

  • Speech-language pathology
  • Human genetics
  • Pediatric neurology

Background:

  • Developmental stuttering is a common speech disorder affecting approximately 60 million individuals globally, primarily between ages 3-6.
  • While heredity is a known factor, the precise genetic mechanisms and inheritance patterns remain complex and vary among families.
  • Stuttering presents with repetitions, prolongations, and blocks in speech, impacting verbal communication development.

Observation:

  • A three-generation family study investigated stuttering inheritance patterns.
  • The proband, a 20-year-old male affected since age 3, was referred for genetic counseling.
  • Thirteen family members across three generations were identified as affected by stuttering.

Findings:

  • The family history revealed stuttering originated in the proband's grandfather.
  • A significant number of affected individuals were observed in consanguineous marriages within the family.
  • An autosomal recessive inheritance pattern for developmental stuttering was proposed for this specific family.

Implications:

  • This case provides strong evidence for a clear genetic basis in families with recurrent stuttering.
  • The findings suggest that stuttering in such families may not be solely a multifactorial disorder.
  • Understanding specific inheritance patterns aids in genetic counseling and potential future therapeutic strategies.