Publication:
PATJ Low Frequency Variants Are Associated With Worse Ischemic Stroke Functional Outcome.

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Date

2019

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Mola-Caminal, Marina
Carrera, Caty
Soriano-Tárraga, Carolina
Giralt-Steinhauer, Eva
Díaz-Navarro, Rosa M
Tur, Sílvia
Jiménez, Carmen
Medina-Dols, Aina
Cullell, Natàlia
Torres-Aguila, Nuria P

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Abstract

Ischemic stroke is among the leading causes of adult disability. Part of the variability in functional outcome after stroke has been attributed to genetic factors but no locus has been consistently associated with stroke outcome. Our aim was to identify genetic loci influencing the recovery process using accurate phenotyping to produce the largest GWAS (genome-wide association study) in ischemic stroke recovery to date. A 12-cohort, 2-phase (discovery-replication and joint) meta-analysis of GWAS included anterior-territory and previously independent ischemic stroke cases. Functional outcome was recorded using 3-month modified Rankin Scale. Analyses were adjusted for confounders such as discharge National Institutes of Health Stroke Scale. A gene-based burden test was performed. The discovery phase (n=1225) was followed by open (n=2482) and stringent joint-analyses (n=1791). Those cohorts with modified Rankin Scale recorded at time points other than 3-month or incomplete data on previous functional status were excluded in the stringent analyses. Novel variants in PATJ (Pals1-associated tight junction) gene were associated with worse functional outcome at 3-month after stroke. The top variant was rs76221407 (G allele, β=0.40, P=1.70×10-9). Our results identify a set of common variants in PATJ gene associated with 3-month functional outcome at genome-wide significance level. Future studies should examine the role of PATJ in stroke recovery and consider stringent phenotyping to enrich the information captured to unveil additional stroke outcome loci.

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MeSH Terms

Brain Ischemia
Disability Evaluation
Gene Frequency
Genetic Predisposition to Disease
Genome-Wide Association Study
Humans
Phenotype
Polymorphism, Single Nucleotide
Recovery of Function
Risk Factors
Stroke
Stroke Rehabilitation
Tight Junction Proteins
Treatment Outcome

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Keywords

allele, genetic loci, genetic variant, genome-wide association study, ischemic stroke

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