Title
Parameters in dynamic models of complex traits are containers of missing heritability.
Abstract
Polymorphisms identified in genome-wide association studies of human traits rarely explain more than a small proportion of the heritable variation, and improving this situation within the current paradigm appears daunting. Given a well-validated dynamic model of a complex physiological trait, a substantial part of the underlying genetic variation must manifest as variation in model parameters. These parameters are themselves phenotypic traits. By linking whole-cell phenotypic variation to genetic variation in a computational model of a single heart cell, incorporating genotype-to-parameter maps, we show that genome-wide association studies on parameters reveal much more genetic variation than when using higher-level cellular phenotypes. The results suggest that letting such studies be guided by computational physiology may facilitate a causal understanding of the genotype-to-phenotype map of complex traits, with strong implications for the development of phenomics technology.
Year
DOI
Venue
2012
10.1371/journal.pcbi.1002459
PLOS COMPUTATIONAL BIOLOGY
Keywords
Field
DocType
genome wide association study,polymorphism,genetic variation,computer model,computer simulation,calcium signaling,action potentials
Genetic correlation,Phenomics,Genetic architecture,Missing heritability problem,Biology,Genetic variation,Genome-wide association study,Genetic association,Bioinformatics,Genetics,Phenotypic trait
Journal
Volume
Issue
ISSN
8
4
1553-7358
Citations 
PageRank 
References 
2
0.44
4
Authors
6
Name
Order
Citations
PageRank
Yunpeng Wang120.77
Arne B Gjuvsland2393.68
Jon Olav Vik3101.67
N P Smith47910.92
Hunter P J51352177.64
Stig W Omholt6799.24