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|Title:||HFE p.C282Y heterozygosity is associated with earlier disease onset in Friedreich ataxia.|
|Authors:||Delatycki, Martin B;Tai, Geneieve;Corben, Louise A;Yiu, Eppie M;Evans-Galea, Marguerite V;Stephenson, Sarah E M;Gurrin, Lyle;Allen, Katrina J;Lynch, David;Lockhart, Paul J|
|Affiliation:||Department of Paediatrics, University of Melbourne, Royal Children's Hospital, Parkville, Victoria, Australia|
Bruce Lefroy Centre for Genetic Health Research, Murdoch Childrens Research Institute, Parkville, Victoria, Australia
School of Psychology and Psychiatry, Monash University, Clayton, Victoria, Australia
Clinical Genetics, Austin Health, Heidelberg, Victoria, Australia
|Citation:||Movement Disorders : Official Journal of the Movement Disorder Society 2014; 29(7): 940-3|
|Abstract:||Friedreich ataxia (FRDA) generally results from reduced frataxin, a mitochondrial protein involved in iron metabolism. We assessed whether HFE p.C282Y and/or p.H63D heterozygosity modifies age at disease onset or disease severity in individuals with FRDA.One hundred seventy individuals with FRDA were assessed for the association of HFE p.C282Y and p.H63D with (1) age at disease onset and (2) Friedreich Ataxia Rating Scale (FARS) score.After adjusting for the smaller FXN GAA repeat size and sex, individuals with FRDA and heterozygous for p.C282Y had disease onset on average 3.72 years earlier than those homozygous for the wild-type amino acid (P = 0.02). Neither mutation affected disease severity as measured by FARS.It is hypothesized that the association between p.C282Y heterozygosity and an earlier age at FRDA onset relates to exacerbation of the already dysregulated iron metabolism that plays a major role in the pathogenesis of FRDA.|
|Internal ID Number:||24390816|
Age of Onset
Histocompatibility Antigens Class I.genetics
|Appears in Collections:||Journal articles|
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