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Consanguinity and Autism.

Nikita Roy1, Mohammad Ghaziuddin2, Sarah Mohiuddin2

  • 1Central Michigan University, Mount Pleasant, MI, USA. nikki_roy1@hotmail.com.

Current Psychiatry Reports
|January 15, 2020
PubMed
Summary

Consanguinity, or shared ancestry, may increase the risk of autism spectrum disorder (ASD) by uncovering recessive genetic conditions. Physicians should screen for consanguinity in ASD evaluations to improve diagnosis and family counseling.

Keywords:
Autism spectrum disorderConsanguinityGenetic counselingHomozygous mapping

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Area of Science:

  • Genetics
  • Developmental Neuroscience
  • Pediatrics

Background:

  • Autism spectrum disorder (ASD) is a complex neurodevelopmental condition with significant heritability.
  • Autosomal recessive inheritance patterns are implicated in some cases of ASD.
  • Consanguinity, the mating of related individuals, increases the likelihood of offspring inheriting rare recessive alleles.

Purpose of the Study:

  • To examine the role of consanguinity as an independent risk factor for autism spectrum disorder.
  • To raise awareness among physicians regarding the link between consanguinity and ASD.
  • To advocate for routine screening of consanguinity in ASD evaluations.

Main Methods:

  • Review of existing literature on consanguinity, genetics, and autism spectrum disorder.
  • Analysis of the implications of recessive gene transmission in ASD development.
  • Discussion of clinical screening and genetic testing recommendations.

Main Results:

  • Consanguinity is a known risk factor for autosomal recessive conditions.
  • Increased consanguinity rates may correlate with a higher prevalence of ASD in certain populations.
  • The contribution of consanguinity to ASD etiology warrants further investigation.

Conclusions:

  • Clinicians should consider screening for consanguinity when evaluating patients for ASD.
  • Genetic testing should be recommended when consanguinity is suspected in ASD cases.
  • Educating families about genetic risks associated with consanguinity is crucial for informed decision-making.