Genetic Models in Association Studies
Genetic model misspecification in genetic association studies
... In genetic association studies the underlying genetic model of inheritance of the genetic determinant of a trait is not always known with certainty ...additive genetic ...
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Improving Discovery of Causal Variants in Genetic Association Studies
... in association with one of the alleles at the common site versus the other ...reasonable genetic models they are likely to account for or contribute to many of the recently identified signals ...
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Bayesian neural networks for detecting epistasis in genetic association studies
... BNN outperformed all methods from the previous section (BEAM and χ 2 test) by a very wide margin. This suggests that BEAM may be less robust to detect causal SNPs in the absence of marginal effects than previously ...
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Identifying Quantitative Trait Locus by Genetic Background Interactions in Association Studies
... a genetic variance of 60 and a phenotypic variance of ...remaining genetic variance of 40 was generated by 10 unlinked additive-effect QTL, each accounting for a variance of ...all genetic ...
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Sex chromosomes and genetic association studies
... To control for an additional extraneous factor, the tests described in the previous section may be extended to allow for a stratification of the data; as before, the score statistics U, and their variances, V, are ...
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Addressing Sources of Bias in Genetic Association Studies
... an association testing model that incorporates the coordinates as covariates to better control for population stratification in disease association ...covariate models using CMDS and NMDS correct the ...
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Genetic association studies in obsessive-compulsive disorder
... Neuroimaging studies in animal models and pharmacological stu- dies of candidate gene association reinforce the hypothesis of the involvement of glutamate in the pathophysiology of ...neuroimaging ...
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Bayesian Graphical Models for Genomewide Association Studies
... Graphical Models for Genomewide Association Studies Claudio ...human genetic variation becomes more fully characterized, the research community is faced with the challenging task of using this ...
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Covariate selection for association screening in multiphenotype genetic studies.
... of association testing in high-dimensional data while maintain ...mixed models (mvLMMs) have demonstrated both precision and increases in power when correlated phenotypes are tested ...the genetic ...
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Recommendations for using standardised phenotypes in genetic association studies
... for association with six obesity phenotypes: weight, BMI and BMI z-scores (BMIZ), 45 each with and without within- study ...family-based association test (FBAT) statistic was used, assuming an additive ...
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Statistical methods for genetic association studies: multi-cohort and rare genetic variants approaches
... effects models that take familial correlation as a random effect with covariance proportional to the kinship matrix is commonly used for single marker tests in GWAS [Amos, 1994; Almasy and Blangero, 1998; ...
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Evolutionary triangulation: informing genetic association studies with evolutionary evidence
... universal genetic risk factors. However, in epistatic models of disease it may not be possible to detect all key genes when local ancestry varies elsewhere in the genome ...
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Pathway analysis for genetic association studies: to do, or not to do? That is the question
... Stage 3: Regression analysis PLS regression analysis was used for prediction modeling of our 2 phenotypes as a function of the number of minor alleles in SNPs identified by stages 1 and 2. PLS searches for ...
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Simultaneous Bayesian analysis of contingency tables in genetic association studies
... proposed by Malovini et al. (2012). Third, it may be interesting to study the effect of the discrete- ness of X on the performance of decision theoretic multiple comparison procedures relying on posterior probabilities. ...
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Statistical Methods for Modeling Heterogeneous Effects in Genetic Association Studies
... observed genetic effect ...marginal genetic effects may vary be- tween populations (Morris, ...the genetic effect coefficients as random variables, with their correlation structure across ancestry ...
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Genetic association studies and the effect of misclassification and selection bias in putative confounders
... no association between the confounder and the SNP among those that did not have an MI, although there was an association between the confounder and MI (see Table ...statistical models; authors state ...
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An Efficient Association Test for High Dimensional Data, with Application in Genetic Studies
... regression models are next separately fitted for X 1 and X 2 as well as for each of approximately 14,000 other explanatory variables not associated with the response and the − log 10 p-values obtained are then ...
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Statistical methods for genetic association studies with response-selective sampling designs
... relevant association studies. These studies often employ a case- control design, and often include non-omics covariates, such as age and gender, that may modify the underlying omics risk ...
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New methods for studying complex diseases via genetic association studies
... Combining data from multiple studies, even those studying the same disease, is not trivial. Variability in how the data were collected, the technology used to obtain the genotypes, and genotype calling software, ...
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A statistical framework for genetic association studies of power curves in bird flight
... aerodynamic models. In this article, we present a general genetic model for fine mapping of quantitative trait loci (QTL) responsible for power curves in a sample of birds drawn from a natural ...population ...
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