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Related Concept Videos

Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
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Related Experiment Video

Updated: Jun 2, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
10:46

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

Published on: December 9, 2015

Familial recurrence risks for multiple sclerosis in Australia.

C O'Gorman1, S Freeman, B V Taylor

  • 1School of Medicine, Gold Coast Campus, Griffith University, QLD 4222, Australia.

Journal of Neurology, Neurosurgery, and Psychiatry
|May 10, 2011
PubMed
Summary
This summary is machine-generated.

Familial risk for multiple sclerosis (MS) is lower in Australia than the Northern Hemisphere. Genetic susceptibility appears similar, suggesting environmental factors drive lower MS prevalence in Australia.

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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
05:53

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Published on: June 21, 2018

Area of Science:

  • Neurology
  • Epidemiology
  • Genetics

Background:

  • Multiple sclerosis (MS) genetic susceptibility is well-documented in the Northern Hemisphere.
  • Limited data exist for MS familial recurrence risks in Southern Hemisphere regions like Australia.
  • Investigating MS genetic and environmental interactions in Australia is crucial.

Purpose of the Study:

  • To assess familial recurrence risks of MS across latitudinally diverse regions in Australia.
  • To compare Australian MS recurrence risks with Northern Hemisphere data.
  • To explore the interplay of genetic and environmental factors in Australian MS cases.

Main Methods:

  • Collected family pedigrees for MS cohorts in Queensland, Victoria, and Tasmania.
  • Utilized age of onset data to calculate age-adjusted recurrence rates.
  • Analyzed sibling recurrence-risk ratio (λ(s)) across different Australian sites.

Main Results:

  • Australian MS recurrence risks were significantly lower than Northern Hemisphere estimates (2.13% vs. 3.5% for siblings).
  • Recurrence risks correlated with population prevalence across Australian sites.
  • Sibling recurrence-risk ratio (λ(s)) remained consistent across Australia.

Conclusions:

  • Familial MS recurrence risk in Australia is lower than previously reported.
  • Lower population prevalence of MS in Australia is linked to reduced familial risk.
  • Similar λ(s) suggests environmental factors, not genetic admixture, explain lower Australian MS prevalence.