Abstract:
BACKGROUND AND PURPOSE:Although the genetic contribution to stroke risk is well known, it remains unclear if young-onset stroke has a stronger genetic contribution than old-onset stroke. This study aims to compare the heritability of ischaemic stroke risk between young and old, using common genetic variants from whole-genome array data in population-based samples. METHODS:This analysis included 4050 ischaemic stroke cases and 5765 controls from six study populations of European ancestry; 47% of cases were young-onset stroke (age < 55 years). To quantify the heritability for stroke risk in these unrelated individuals, the pairwise genetic relatedness was estimated between individuals based on their whole-genome array data using a mixed linear model. Heritability was estimated separately for young-onset stroke and old-onset stroke (age ≥ 55 years). RESULTS:Heritabilities for young-onset stroke and old-onset stroke were estimated at 42% (±8%, P < 0.001) and 34% (±10%, P < 0.001), respectively. CONCLUSIONS:Our data suggest that the genetic contribution to the risk of stroke may be higher in young-onset ischaemic stroke, although the difference was not statistically significant.
journal_name
Eur J Neuroljournal_title
European journal of neurologyauthors
Bluher A,Devan WJ,Holliday EG,Nalls M,Parolo S,Bione S,Giese AK,Boncoraglio GB,Maguire JM,Müller-Nurasyid M,Gieger C,Meschia JF,Rosand J,Rolfs A,Kittner SJ,Mitchell BD,O'Connell JR,Cheng YCdoi
10.1111/ene.12827subject
Has Abstractpub_date
2015-11-01 00:00:00pages
1488-91issue
11eissn
1351-5101issn
1468-1331journal_volume
22pub_type
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