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Related Experiment Videos

A polygenic basis for late-onset disease.

Alan Wright1, Brian Charlesworth, Igor Rudan

  • 1MRC Human Genetics Unit, Western General Hospital, Crewe Road, EH4 2XU, Edinburgh, UK. alan.wright@hgu.mrc.ac.uk

Trends in Genetics : TIG
|January 28, 2003
PubMed
Summary

Genetic factors influence late-onset diseases, which are sensitive to environmental changes and exhibit high genetic variation. Current strategies may be inadequate for identifying genes linked to these complex conditions.

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Area of Science:

  • Genetics
  • Evolutionary Biology
  • Complex Diseases

Background:

  • Late-onset diseases are influenced by genetic factors under evolutionary constraint.
  • These traits are sensitive to environmental variations due to homeostatic breakdown.
  • Late-onset traits display higher genetic variation than those affecting reproductive fitness.

Purpose of the Study:

  • To analyze the genetic basis of late-onset diseases.
  • To understand the evolutionary pressures shaping genetic variation in these conditions.
  • To evaluate the suitability of current strategies for identifying disease-related genes.

Main Methods:

  • Analysis of genetic factors contributing to late-onset disease.
  • Examination of evolutionary constraints on genetic variation.

Related Experiment Videos

  • Comparison of genetic variation in late-onset traits versus reproductive fitness traits.

    • Main Results:

    • Genetic factors with varying evolutionary constraints shape late-onset disease.
    • Late-onset traits are more susceptible to environmental influences.
    • Higher genetic variation exists in late-onset traits compared to fitness traits.

    Conclusions:

    • The nature of genetic variation in late-onset diseases challenges current identification strategies.
    • New approaches may be needed to effectively identify genes involved in complex, late-onset conditions.