[ 源代码： gemma ]
软件包：gemma（0.98.4+dfsg-4）
Genome-wide Efficient Mixed Model Association
GEMMA is the software implementing the Genome-wide Efficient Mixed Model Association algorithm for a standard linear mixed model and some of its close relatives for genome-wide association studies (GWAS):
* It fits a univariate linear mixed model (LMM) for marker association tests with a single phenotype to account for population stratification and sample structure, and for estimating the proportion of variance in phenotypes explained (PVE) by typed genotypes (i.e. "chip heritability"). * It fits a multivariate linear mixed model (mvLMM) for testing marker associations with multiple phenotypes simultaneously while controlling for population stratification, and for estimating genetic correlations among complex phenotypes. * It fits a Bayesian sparse linear mixed model (BSLMM) using Markov chain Monte Carlo (MCMC) for estimating PVE by typed genotypes, predicting phenotypes, and identifying associated markers by jointly modeling all markers while controlling for population structure. * It estimates variance component/chip heritability, and partitions it by different SNP functional categories. In particular, it uses HE regression or REML AI algorithm to estimate variance components when individual-level data are available. It uses MQS to estimate variance components when only summary statisics are available.
GEMMA is computationally efficient for large scale GWAS and uses freely available open-source numerical libraries.
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同时作为一个虚包由这些包填实： libc6-udeb
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