Abstract:
:Runs of homozygosity are common in European populations and are indicative of consanguinity, restricted population size and recessively inherited traits. Here, we map runs of homozygosity (ROHs) in an Irish case-control cohort for amyotrophic lateral sclerosis (ALS), a devastating neurological condition with high heritability yet only partially established genetic cause. We compare the extent of homozygosity in the Irish cohort with a large British cohort and observe that ROHs are longer and more frequent in the Irish population than in the British, and that extent of ROHs is correlated with demographic factors within the island of Ireland. ROHs are also longer and more frequent in ALS cases compared to population-matched controls, supporting the hypothesis that recessively inherited loci play a pathogenic role in ALS. Comparing homozygous haplotypes between cases and controls reveals several potential recessive risk loci for ALS, including a genomic interval spanning ARHGEF1, a compelling ALS candidate gene.
journal_name
Genomicsjournal_title
Genomicsauthors
McLaughlin RL,Kenna KP,Vajda A,Heverin M,Byrne S,Donaghy CG,Cronin S,Bradley DG,Hardiman Odoi
10.1016/j.ygeno.2015.01.002subject
Has Abstractpub_date
2015-04-01 00:00:00pages
237-41issue
4eissn
0888-7543issn
1089-8646pii
S0888-7543(15)00004-Xjournal_volume
105pub_type
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