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dawnrank's Introduction

DawnRank

driver gene identification algorithm DawnRank 2014

Install:

install.packages("devtools")

library(devtools)

install_github("MartinFXP/DawnRank")

library(DawnRank)

Small scale example:

# load the mutation data
data(brcaExampleMutation)

# load the tumor expression data
data(brcaExampleTumorExpression)

# load the normal expression data
data(brcaExampleNormalExpression)

# load the pathway data
data(brcaExamplePathway)

# load the gold standard
data(goldStandard)

# normalize the tumor and normal data to get the differential expression
normalizedDawn <- DawnNormalize(tumorMat = brcaExampleTumorExpression, normalMat = brcaExampleNormalExpression)

# get the DawnRank Score Get some coffee, this might take a while!
dawnRankScore <- DawnRank(adjMatrix = brcaExamplePathway, mutationMatrix = brcaExampleMutation, 
expressionMatrix = normalizedDawn, mu = 3, goldStandard = goldStandard, parallel = 2)

# look at the DawnRank scores for a few patients
dawnRankFrame <- dawnRankScore[[3]]
head(dawnRankFrame)

# get the aggregate DawnRank scores Get some coffee, this might take a
# while!
aggregateDawnRankScore <- condorcetRanking(scoreMatrix = dawnRankScore[[2]], 
    mutationMatrix = brcaExampleMutation, parallel = 2)

# look at top 10 ranked genes
top10 <- aggregateDawnRankScore[[2]][1:10]
top10

# get the individual cutoff for patient TCGA-A2-A04P
dawnRankFrame$isCGC <- dawnRankFrame$isGoldStandard
library(maxstat)
#NOTE: the latest version of mvnorm should be installed
significance <- patspeccutoff(patient = "TCGA-A2-A04P", ms = dawnRankFrame, 
    default = 95)
# look for signficance. 
significance[[1]]

Reference:

Hou & Ma, 2014

https://genomemedicine.biomedcentral.com/articles/10.1186/s13073-014-0056-8

http://genome.compbio.cs.cmu.edu/~jianma/software/DawnRank/

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dawnrank's Issues

Expression data format

Hi thank you for developing this great tool! I was wondering if you could provide details on the type of data used for the expression matrices. I see that it appears to be in log form, does the algorithm use TPM or raw counts, or some other quantification? Thanks again.

Normal Expression data

Hello

What is meant by Normal Expression data? In cancer research we RNAseq tumor only usually

Thanks

How to select the genes like example data

It's a great work! I have a little question here that I don't understand how you select the "1492 genes" in example BRCA mutation and expression data, but the raw TCGA expression data have thousands genes, I'm confused about this.

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