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Genetic Variants in CSMD1 Gene Are Associated with Cognitive Performance in Normal Elderly Population.

ABSTRACT: Recently, genetic markers rs10503253 and rs2616984 in the CUB and Sushi multiple domains-1 (CSMD1) gene have been reported to be associated with schizophrenia and cognitive functions in genome-wide association studies. We examined the associations of the above SNPs with cognitive performance evaluated by the Montreal Cognitive Assessment (MoCA) tool in a cohort of the normal elderly from the Russian population. Significant association of rs2616984 genotypes with the MoCA scores was found using nonparametric analysis. No association of rs10503253 with MoCA scores was observed using both parametric and nonparametric statistics. Significant combined effect of two-locus CSMD1 genotypes on MoCA scores was demonstrated by median test. Allele "A" and genotype "AA" of rs2616984 were significantly associated with the lower MoCA scores in comparison of 1st and 4th quartiles of MoCA total score distribution. The results suggest that genetic variants in CSMD1 gene are likely a part of genetic component of cognitive performance in the elderly.

SUBMITTER: Stepanov V

PROVIDER: S-EPMC5742897 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Genetic Variants in CSMD1 Gene Are Associated with Cognitive Performance in Normal Elderly Population.

Stepanov Vadim V Marusin Andrey A Vagaitseva Kseniya K Bocharova Anna A Makeeva Oksana O

Genetics research international 20171212

Recently, genetic markers rs10503253 and rs2616984 in the CUB and Sushi multiple domains-1 (CSMD1) gene have been reported to be associated with schizophrenia and cognitive functions in genome-wide association studies. We examined the associations of the above SNPs with cognitive performance evaluated by the Montreal Cognitive Assessment (MoCA) tool in a cohort of the normal elderly from the Russian population. Significant association of rs2616984 genotypes with the MoCA scores was found using n ...[more]

PMID: 29379655

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Project description:IMPORTANCE:There are genetic influences on memory ability as we age, but no specific genes have been identified. OBJECTIVE:To use a cognitive endophenotype, exceptional episodic memory (EEM) performance, derived from nondemented offspring from the Long Life Family Study (LLFS) to identify genetic variants that may be responsible for the high cognitive performance of LLFS participants and further replicate these variants using an additional 4006 nondemented individuals from 4 independent elderly cohorts. DESIGN, SETTING, AND PARTICIPANTS:A total of 467 LLFS participants from 18 families with 2 or more offspring that exhibited exceptional memory performance were used for genome-wide linkage analysis. Adjusted multivariate linear analyses in the 40-megabase region encompassing the linkage peak were conducted using 4 independent replication data sets that included 4006 nondemented elderly individuals. Results of the individual replication cohorts were combined by meta-analysis. MAIN OUTCOME MEASURE:Episodic memory scores computed as the mean of the 2 standardized measures of Logical Memory IA and IIA. RESULTS:Heritability estimates indicated a significant genetic component for EEM (h2 = 0.21; SE = 0.09). Genome-wide linkage analysis revealed that EEM was linked to the 6q24 region (maximum logarithm of odds score, 3.64). Association analysis in LLFS families identified single-nucleotide polymorphisms (SNPs) nominally associated with EEM in the 40-megabase window encompassing the linkage peak. Replication in one cohort identified a set of 26 SNPs associated with episodic memory (P ? .05). Meta-analysis of the 26 SNPs using the 4 independent replication cohorts found SNPs rs9321334 and rs6902875 to be nominally significantly associated with episodic memory (P = .009 and P = .013, respectively). With meta-analysis restricted to individuals lacking an APOE ?4 allele, SNP rs6902875 became statistically significant (meta-analysis, P = 6.7 × 10-5). Haplotype analysis incorporating the 2 SNPs flanking rs6902875 (rs9321334 and rs4897574) revealed that the A-A-C haplotype was significantly associated with episodic memory performance (P = 2.4 × 10-5). This genomic region harbors monooxygenase dopamine ?-hydroxylase-like 1 gene (MOXD1), implicated in the biosynthesis of norepinephrine, which is prominently involved in cognitive functions. CONCLUSIONS AND RELEVANCE:The results provide strong evidence for potential candidate genes related to EEM on 6q24. Identifying the genes will help in understanding the biological basis of memory performance and allow interventions for enhancement of cognitive function.

Dataset Information

Genetic Variants in CSMD1 Gene Are Associated with Cognitive Performance in Normal Elderly Population.

Publications

Genetic Variants in CSMD1 Gene Are Associated with Cognitive Performance in Normal Elderly Population.

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