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Common Kibra Alleles Are Associated with Human Memory Performance

Science  20 Oct 2006:
Vol. 314, Issue 5798, pp. 475-478
DOI: 10.1126/science.1129837

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Abstract

Human memory is a polygenic trait. We performed a genome-wide screen to identify memory-related gene variants. A genomic locus encoding the brain protein KIBRA was significantly associated with memory performance in three independent, cognitively normal cohorts from Switzerland and the United States. Gene expression studies showed that KIBRA was expressed in memory-related brain structures. Functional magnetic resonance imaging detected KIBRA allele–dependent differences in hippocampal activations during memory retrieval. Evidence from these experiments suggests a role for KIBRA in human memory.

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