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Bayesian methods for genetic association analysis with heterogeneous subgroups: From meta-analyses to gene-environment interactions

open access: yes, 2014
Genetic association analyses often involve data from multiple potentially-heterogeneous subgroups. The expected amount of heterogeneity can vary from modest (e.g., a typical meta-analysis) to large (e.g., a strong gene--environment interaction). However,
Stephens, Matthew, Wen, Xiaoquan
core   +1 more source

Accounting for Population Structure in Gene-by-Environment Interactions in Genome-Wide Association Studies Using Mixed Models. [PDF]

open access: yes, 2016
Although genome-wide association studies (GWASs) have discovered numerous novel genetic variants associated with many complex traits and diseases, those genetic variants typically explain only a small fraction of phenotypic variance. Factors that account
Bilow, Michael   +6 more
core   +4 more sources

Population Stratification in Genetic Association Studies [PDF]

open access: yesCurrent Protocols in Human Genetics, 2017
AbstractPopulation stratification (PS) is a primary consideration in studies of genetic determinants of human traits. Failure to control for PS may lead to confounding, causing a study to fail for lack of significant results, or resources to be wasted following false‐positive signals.
Jacklyn N, Hellwege   +5 more
openaire   +2 more sources

Polymorphisms at 1q32, 8q24, and 17q22 loci are associated with nonsyndromic cleft lip with or without cleft palate risk in the Slovak population

open access: yesBiomedical Papers, 2017
Background: Nonsyndromic cleft lip with or without cleft palate (nsCL/P) is the most common orofacial birth defect with an aetiology involving both genetic and environmental factors.
Jan Salagovic   +7 more
doaj   +1 more source

Fractal Characterizations of MAX Statistical Distribution in Genetic Association Studies

open access: yes, 2009
Two non-integer parameters are defined for MAX statistics, which are maxima of $d$ simpler test statistics. The first parameter, $d_{MAX}$, is the fractional number of tests, representing the equivalent numbers of independent tests in MAX.
Azzalini A.   +7 more
core   +1 more source

Modeling and Testing for Joint Association Using a Genetic Random Field Model [PDF]

open access: yes, 2014
Substantial progress has been made in identifying single genetic variants predisposing to common complex diseases. Nonetheless, the genetic etiology of human diseases remains largely unknown.
Adler   +24 more
core   +2 more sources

Phenome-wide association analysis of LDL-cholesterol lowering genetic variants in PCSK9

open access: yesBMC Cardiovascular Disorders, 2019
Background We characterised the phenotypic consequence of genetic variation at the PCSK9 locus and compared findings with recent trials of pharmacological inhibitors of PCSK9. Methods Published and individual participant level data (300,000+ participants)
Amand F. Schmidt   +167 more
doaj   +1 more source

Sample Size and Statistical Power Calculation in Genetic Association Studies [PDF]

open access: yesGenomics & Informatics, 2012
A sample size with sufficient statistical power is critical to the success of genetic association studies to detect causal genes of human complex diseases.
Eun Pyo Hong, Ji Wan Park
doaj   +1 more source

A comprehensive 1000 Genomes-based genome-wide association meta-analysis of coronary artery disease [PDF]

open access: yes, 2015
Existing knowledge of genetic variants affecting risk of coronary artery disease (CAD) is largely based on genome-wide association studies (GWAS) analysis of common SNPs.
Alver, Maris   +153 more
core   +5 more sources

A variance components factor model for genetic association studies: a Bayesian analysis.

open access: yes, 2010
Studies of gene-trait associations for complex diseases often involve multiple traits that may vary by genotype groups or patterns. Such traits are usually manifestations of lower-dimensional latent factors or disease syndromes.
Nonyane, BAS, Whittaker, JC
core   +1 more source

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