TY - JOUR
T1 - Polygenic risk of ischemic stroke is associated with cognitive ability
AU - Harris, Sarah E.
AU - Malik, Rainer
AU - Marioni, Riccardo
AU - Campbell, Archie
AU - Seshadri, Sudha
AU - Worrall, Bradford B.
AU - Sudlow, Cathie L.M.
AU - Hayward, Caroline
AU - Bastin, Mark E.
AU - Starr, John M.
AU - Porteous, David J.
AU - Wardlaw, Joanna M.
AU - Deary, Ian J.
N1 - Publisher Copyright:
© 2015 American Academy of Neurology.
PY - 2016/2/16
Y1 - 2016/2/16
N2 - Objectives: We investigated the correlation between polygenic risk of ischemic stroke (and its subtypes) and cognitive ability in 3 relatively healthy Scottish cohorts: the Lothian Birth Cohort 1936 (LBC1936), the Lothian Birth Cohort 1921 (LBC1921), and Generation Scotland: Scottish Family Health Study (GS). Methods: Polygenic risk scores for ischemic stroke were created in LBC1936 (n 1005), LBC1921 (n 517), and GS (n 6,815) using genome-wide association study summary data from the METASTROKE collaboration. We investigated whether the polygenic risk scores correlate with cognitive ability in the 3 cohorts. Results: In the largest cohort, GS, polygenic risk of all ischemic stroke, small vessel disease stroke, and large vessel disease stroke, but not cardioembolic stroke, were correlated with both fluid and crystallized cognitive abilities. The highest correlation was between a polygenic risk score for all ischemic stroke and general cognitive ability (r -0.070, p 1.95 × 10 -8). Few correlations were identified in LBC1936 and LBC1921, but a meta-analysis of all 3 cohorts supported the correlation between polygenic risk of ischemic stroke and cognitive ability. Conclusions: The findings from this study indicate that even in the absence of stroke, being at high polygenic risk of ischemic stroke is associated with lower cognitive ability.
AB - Objectives: We investigated the correlation between polygenic risk of ischemic stroke (and its subtypes) and cognitive ability in 3 relatively healthy Scottish cohorts: the Lothian Birth Cohort 1936 (LBC1936), the Lothian Birth Cohort 1921 (LBC1921), and Generation Scotland: Scottish Family Health Study (GS). Methods: Polygenic risk scores for ischemic stroke were created in LBC1936 (n 1005), LBC1921 (n 517), and GS (n 6,815) using genome-wide association study summary data from the METASTROKE collaboration. We investigated whether the polygenic risk scores correlate with cognitive ability in the 3 cohorts. Results: In the largest cohort, GS, polygenic risk of all ischemic stroke, small vessel disease stroke, and large vessel disease stroke, but not cardioembolic stroke, were correlated with both fluid and crystallized cognitive abilities. The highest correlation was between a polygenic risk score for all ischemic stroke and general cognitive ability (r -0.070, p 1.95 × 10 -8). Few correlations were identified in LBC1936 and LBC1921, but a meta-analysis of all 3 cohorts supported the correlation between polygenic risk of ischemic stroke and cognitive ability. Conclusions: The findings from this study indicate that even in the absence of stroke, being at high polygenic risk of ischemic stroke is associated with lower cognitive ability.
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U2 - 10.1212/WNL.0000000000002306
DO - 10.1212/WNL.0000000000002306
M3 - Article
C2 - 26695942
AN - SCOPUS:84959456507
SN - 0028-3878
VL - 86
SP - 611
EP - 618
JO - Neurology
JF - Neurology
IS - 7
ER -