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xseq (version 0.2.1)

Assessing Functional Impact on Gene Expression of Mutations in Cancer

Description

A hierarchical Bayesian approach to assess functional impact of mutations on gene expression in cancer. Given a patient-gene matrix encoding the presence/absence of a mutation, a patient-gene expression matrix encoding continuous value expression data, and a graph structure encoding whether two genes are known to be functionally related, xseq outputs: a) the probability that a recurrently mutated gene g influences gene expression across the population of patients; and b) the probability that an individual mutation in gene g in an individual patient m influences expression within that patient.

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Version

Install

install.packages('xseq')

Monthly Downloads

2

Version

0.2.1

License

GPL (>= 2)

Maintainer

Jiarui Ding

Last Published

September 11th, 2015

Functions in xseq (0.2.1)

LearnXseqParameter

Learn xseq parameters given an initialized model
ImputeKnn

Impute missing values (NAs) using K-nearest neighbour averaging
InitXseqModel

The datastructure to store the xseq models
ConvertXseqOutput

Convert xseq output to a data.frame
cna.call

TCGA AML SNP6.0 GISTIC copy number alteration calls
InferXseqPosterior

Learn xseq parameters given an initialized model
cna.logr

TCGA AML SNP6.0 copy number alteration data
expr

TCGA AML SNP6.0 gene expression data
NormExpr

Remove the cis-effects of copy number alterations on gene expression
EstimateExpression

A mixture modelling approach to estiamte whether a gene is expressed in a study given RNA-seq gene expression data
net

A networks containing gene associations
QuantileNorm

Quantile normalize a matrix
mut

TCGA AML somatic mutation data
FilterNetwork

Filter network
GetExpressionDistribution

Get the conditional distributions for a set of genes
PlotRegulationHeatmap

Heatmap showing the connected genes' dysregulation probabilities
SetXseqPrior

Set model paramerter priors