Correlations between APOBEC_MutLoad_MinEstimate and mRNAseq expression
Skin Cutaneous Melanoma (Metastatic)
02 April 2015  |  analyses__2015_04_02
Maintainer Information
Citation Information
Maintained by Hailei Zhang (Broad Institute)
Cite as Broad Institute TCGA Genome Data Analysis Center (2015): Correlations between APOBEC_MutLoad_MinEstimate and mRNAseq expression. Broad Institute of MIT and Harvard. doi:10.7908/C1DF6Q98
Overview
Introduction

This pipeline attempts to calculate the pearson correlation between APOBEC_MutLoad_MinEstimate and mRnaseq data of each gene across samples to determine if the APOBEC_MutLoad_MinEstimate also result in differential expressions.

Summary

The correlation coefficients in 10, 20, 30, 40, 50, 60, 70, 80, 90 percentiles are -0.0945, -0.0647, -0.04202, -0.0244, -0.0071, 0.0107, 0.0306, 0.05348, 0.08384, respectively.

Results
Correlation results

Number of samples used for the calculation are shown in Table 1. Figure 1 shows the distribution of calculated correlation coefficients and quantile-quantile plot of the calculated correlation coefficients against a normal distribution. Table 2 shows the top 20 genes ordered by the value of correlation coefficients.

Table 1.  Counts of mRNAseq and number of samples in APOBEC_MutLoad_MinEstimate and expression data sets and common to both

Category APOBEC_MutLoad_MinEstimate Expression Common
Sample 290 367 290

Figure 1.  Summary figures. Left: histogram showing the distribution of the calculated correlations across samples for all Genes. Right: QQ plot of the calculated correlations across samples. The QQ plot is used to plot the quantiles of the calculated correlation coefficients against that derived from a normal distribution. Points deviating from the blue line indicate deviation from normality.

Table 2.  Get Full Table Top 20 genes ranked by correlation coefficients

geneID cor p-value q-value
AHSG|197 0.3797 3.64947199917864e-05 0.0549458421743005
PRB2|653247 0.351 0.000523283548035547 0.163213817218766
AMY1A|276 0.3382 3.11037913647283e-07 0.00280976099293273
PRB1|5542 0.3228 0.00111732722117397 0.225294741216969
PARP6|56965 0.3195 2.62622421587366e-08 0.000474479929081895
LOC153328|153328 0.3076 0.000969013082315229 0.213501943392552
ITLN2|142683 0.2689 0.000118288649798126 0.0926222638907202
GAGE12J|729396 0.2618 0.00372294721519539 0.344428288745074
PRB3|5544 0.2617 0.00647732198136652 0.423185745506196
ITGB1BP1|9270 0.2557 1.03413674445996e-05 0.0311395809369301
HAO2|51179 0.2515 0.00068438386661196 0.180004570286463
APOA2|336 0.2509 0.0136709041178493 0.491038220073924
LOC285033|285033 0.2475 2.01296175987853e-05 0.0398077669095581
OR7E5P|219445 0.2434 0.0193642893335331 0.540735931249808
FGF5|2250 0.2424 0.00104218865985661 0.213968437700334
RPL23AP82|284942 0.2412 3.29491461945608e-05 0.0541174749361027
CALHM3|119395 0.236 0.0153427263015629 0.507454986682769
NBPF4|148545 0.2358 0.000318022438845489 0.145724059006324
VIL1|7429 0.2331 0.0172582734665108 0.515380540032149
ADK|132 0.2329 6.23935892352101e-05 0.0751509984475027
Methods & Data
Input

Gene level (TCGA Level III) mRNAseq expression data and APOBEC_MutLoad_MinEstimate derived by Mutation_APOBEC pipeline were used to do this analysis. Pearson correlation coefficients were calculated for APOBEC_MutLoad_MinEstimate and each gene across all the samples that were common.

Correlation across sample

Pearson correlation with pairwise.complete.obs was used to do this analysis.

Download Results

In addition to the links below, the full results of the analysis summarized in this report can also be downloaded programmatically using firehose_get, or interactively from either the Broad GDAC website or TCGA Data Coordination Center Portal.