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Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
Published on: August 15, 2019
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Heritability of human visual contour integration-an integrated genomic study
Zijian Zhu1, Biqing Chen1,2, Ren Na1
1PKU-IDG/McGovern Institute for Brain Research, and Peking-Tsinghua Center for Life Sciences, Peking University, 100871, Beijing, China.
European Journal of Human Genetics : EJHG
|August 1, 2019
Summary
This study reveals that contour integration ability has moderate heritability, influenced by common genetic variations. Specific genes, including MIR1178 and PABPN1L, show significant associations with this crucial visual function.
Area of Science:
- Neuroscience
- Genetics
- Visual Perception
Background:
- Contour integration is vital for processing natural scenes and is often impaired in mental disorders like schizophrenia.
- Individual differences in contour integration suggest a potential genetic basis.
Purpose of the Study:
- To investigate the genetic underpinnings of individual differences in human contour integration ability.
- To estimate the heritability of contour integration and identify associated genetic variants.
Main Methods:
- Quantitative genomic analysis of 2619 participants, including heritability estimation using single nucleotide polymorphisms (SNPs).
- Two-stage genome-wide association analysis (GWAS) at SNP, gene, and pathway levels.
- Association testing in discovery (N=1931) and replication (N=688) cohorts.
Main Results:
- Contour integration demonstrated moderate heritability, with common SNPs accounting for 49.5% of phenotypic variation.
- Genome-wide significant SNPs were detected but did not replicate; however, the microRNA gene MIR1178 showed significant association in both cohorts.
- The gene PABPN1L also showed significant association after replication, suggesting its role in contour integration.
Conclusions:
- This research identifies significant genetic associations with contour integration ability.
- Findings support the genetic transmission of the capacity to perceive continuous contours, offering insights into visual processing variations.
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