Mergeomics: Integrative network analysis of omics data

Description Usage Arguments Details Value Author(s) References See Also Examples

MSEA.KDA.onestep performs Marker Set Enrichment Analysis (MSEA) and/or Key Driver Anlaysis (KDA) processes in one step.

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MSEA.KDA.onestep(plan, apply.MSEA=TRUE, apply.KDA=FALSE, 
maxoverlap.genesets=0.33, symbol.transfer.needed=FALSE, 
sym.from=c("HUMAN", "MOUSE"), sym.to=c("HUMAN", "MOUSE"))

`plan`	a data list including file and parameter settings for MSEA and/or KDA processes: label: unique identifier for the analysis folder: output folder for results modfile: path to module file (cols: MODULE GENE) genfile: path to gene file (cols: GENE LOCUS) (MSEA-specific) marfile: path to marker file (cols: MARKER VALUE) (MSEA-specific) inffile: path to module info file (cols: MODULE DESCR) seed: seed for random number generator permtype: gene for gene-level, locus for marker-level nperm: max number of random permutations mingenes: min number of genes per module (after merging) maxgenes: max number of genes per module quantiles: cutoffs for test statistic maxoverlap: max overlap allowed between genes netfile: path to network file (TAIL HEAD WEIGHT) (KDA-specific)
`apply.MSEA`	determines whether MSEA will be performed to the given set. Default value is TRUE.
`apply.KDA`	determines whether KDA will be performed to the given set. Default value is FALSE.
`maxoverlap.genesets`	maximum overlapping ratio for the genesets. This is applicable if KDA is performed following the MSEA process in one-step running. Default value is 0.33.
`symbol.transfer.needed`	determines whether gene symbols in the gene sets are needed to be transformed between different species. Default value is FALSE.
`sym.from`	defines the species, whose gene symbols will be converted to the gene symbols of `sym.to` species. It can be either HUMAN or MOUSE. It is applicable if `symbol.transfer.needed` is TRUE.
`sym.to`	defines the species, whose gene symbols will be converted from the gene symbols of `sym.from` species. It can be either HUMAN or MOUSE. It is applicable if `symbol.transfer.needed` is TRUE.

MSEA.KDA.onestep performs MSEA and/or KDA operations in one built-in function. Users can run both MSEA and KDA sequentially, or they can run either MSEA or KDA in one step with the same function. If MSEA and KDA will be applied sequentially, significantly enriched gene sets (having FDR < 0.25), coming from MSEA results, will be merged if their overlapping ratios are larger than a given threshold, i.e. maxoverlap.genesets, to proceed the next step with relatively indepent gene sets. Then, KDA is applied to this relatively independent gene sets.

plan

the updated data frame after performing MSEA and/or KDA. If MSEA is performed, results will include standard MSEA results (see ssea.analyze for details); if KDA is applied, results will include standard KDA results (see kda.analyze for details).

Zeyneb Kurt

Shu L, Zhao Y, Kurt Z, Byars SG, Tukiainen T, Kettunen J, Orozco LD, Pellegrini M, Lusis AJ, Ripatti S, Zhang B, Inouye M, Makinen V-P, Yang X. Mergeomics: multidimensional data integration to identify pathogenic perturbations to biological systems. BMC genomics. 2016;17(1):874.

ssea.analyze, kda.analyze

plan <- list()
plan$label <- "hdlc"
plan$folder <- "Results"
plan$genfile <- system.file("extdata", 
"genes.hdlc_040kb_ld70.human_eliminated.txt", package="Mergeomics")
plan$marfile <- system.file("extdata", 
"marker.hdlc_040kb_ld70.human_eliminated.txt", package="Mergeomics")
plan$modfile <- system.file("extdata", 
"modules.mousecoexpr.liver.human.txt", package="Mergeomics")
plan$inffile <- system.file("extdata", 
"coexpr.info.txt", package="Mergeomics")
plan$nperm <- 100 ## default value is 20000
plan <- MSEA.KDA.onestep(plan, apply.MSEA=TRUE)