Mutation Analysis (MutSigCV v0.9)
Pancreatic Adenocarcinoma (Primary solid tumor)
28 January 2016  |  analyses__2016_01_28
Maintainer Information
Citation Information
Maintained by David Heiman (Broad Institute)
Cite as Broad Institute TCGA Genome Data Analysis Center (2016): Mutation Analysis (MutSigCV v0.9). Broad Institute of MIT and Harvard. doi:10.7908/C11835ZW
Overview
Introduction

This report serves to describe the mutational landscape and properties of a given individual set, as well as rank genes and genesets according to mutational significance. MutSigCV v0.9 was used to generate the results found in this report.

  • Working with individual set: PAAD-TP

  • Number of patients in set: 184

Input

The input for this pipeline is a set of individuals with the following files associated for each:

  1. An annotated .maf file describing the mutations called for the respective individual, and their properties.

  2. A .wig file that contains information about the coverage of the sample.

Summary
  • MAF used for this analysis:PAAD-TP.final_analysis_set.maf

  • Blacklist used for this analysis: pancan_mutation_blacklist.v14.hg19.txt

  • Significantly mutated genes (q ≤ 0.1): 526

Results
Target Coverage for Each Individual

The x axis represents the samples. The y axis represents the exons, one row per exon, and they are sorted by average coverage across samples. For exons with exactly the same average coverage, they are sorted next by the %GC of the exon. (The secondary sort is especially useful for the zero-coverage exons at the bottom). If the figure is unpopulated, then full coverage is assumed (e.g. MutSig CV doesn't use WIGs and assumes full coverage).

Figure 1. 

Distribution of Mutation Counts, Coverage, and Mutation Rates Across Samples

Figure 2.  Patients counts and rates file used to generate this plot: PAAD-TP.patients.counts_and_rates.txt

Lego Plots

The mutation spectrum is depicted in the lego plots below in which the 96 possible mutation types are subdivided into six large blocks, color-coded to reflect the base substitution type. Each large block is further subdivided into the 16 possible pairs of 5' and 3' neighbors, as listed in the 4x4 trinucleotide context legend. The height of each block corresponds to the mutation frequency for that kind of mutation (counts of mutations normalized by the base coverage in a given bin). The shape of the spectrum is a signature for dominant mutational mechanisms in different tumor types.

Figure 3.  Get High-res Image SNV Mutation rate lego plot for entire set. Each bin is normalized by base coverage for that bin. Colors represent the six SNV types on the upper right. The three-base context for each mutation is labeled in the 4x4 legend on the lower right. The fractional breakdown of SNV counts is shown in the pie chart on the upper left. If this figure is blank, not enough information was provided in the MAF to generate it.

Figure 4.  Get High-res Image SNV Mutation rate lego plots for 4 slices of mutation allele fraction (0<=AF<0.1, 0.1<=AF<0.25, 0.25<=AF<0.5, & 0.5<=AF) . The color code and three-base context legends are the same as the previous figure. If this figure is blank, not enough information was provided in the MAF to generate it.

CoMut Plot

Figure 5.  Get High-res Image The matrix in the center of the figure represents individual mutations in patient samples, color-coded by type of mutation, for the significantly mutated genes. The rate of synonymous and non-synonymous mutations is displayed at the top of the matrix. The barplot on the left of the matrix shows the number of mutations in each gene. The percentages represent the fraction of tumors with at least one mutation in the specified gene. The barplot to the right of the matrix displays the q-values for the most significantly mutated genes. The purple boxplots below the matrix (only displayed if required columns are present in the provided MAF) represent the distributions of allelic fractions observed in each sample. The plot at the bottom represents the base substitution distribution of individual samples, using the same categories that were used to calculate significance.

Significantly Mutated Genes

Column Descriptions:

  • nnon = number of (nonsilent) mutations in this gene across the individual set

  • npat = number of patients (individuals) with at least one nonsilent mutation

  • nsite = number of unique sites having a non-silent mutation

  • nflank = number of noncoding mutations from this gene's flanking region, across the individual set

  • nsil = number of silent mutations in this gene across the individual set

  • p = p-value (overall)

  • q = q-value, False Discovery Rate (Benjamini-Hochberg procedure)

Table 1.  Get Full Table A Ranked List of Significantly Mutated Genes. Number of significant genes found: 526. Number of genes displayed: 35. Click on a gene name to display its stick figure depicting the distribution of mutations and mutation types across the chosen gene (this feature may not be available for all significant genes).

gene Nnon Nsil Nflank nnon npat nsite nsil nflank nnei fMLE p score time q
BRDT 423936 105984 64400 25 25 2 0 0 20 0.25 0 140 0.29 0
CACNA1D 960296 262016 175352 36 29 13 0 0 11 0.28 0 140 0.29 0
CCR3 151616 46552 2208 12 11 2 1 0 20 0.8 0 65 0.21 0
CDH3 340032 101016 53360 14 14 1 0 0 20 0.63 0 80 0.23 0
CIR1 190072 44160 41584 18 18 1 0 0 20 0.44 0 110 0.39 0
EDC4 590088 182528 103776 32 31 3 3 0 15 1.2 0 160 0.26 0
FADS2 186024 47840 39744 15 15 1 0 0 20 1 0 87 0.27 0
MED15 319976 91448 61272 40 35 6 1 0 20 0.91 0 190 0.21 0
NAPSA 165968 55936 29808 15 15 3 0 0 20 0.69 0 82 0.29 0
NPNT 237360 67712 40112 20 20 2 1 0 20 1 0 110 0.21 0
OLIG3 84824 25208 2944 22 21 4 2 0 20 0.67 0 120 0.23 0
PAK1 250056 65136 52992 19 19 1 0 0 20 1.2 0 110 0.2 0
PANK2 179216 53544 41400 12 12 2 1 0 20 0.41 0 69 0.28 0
RBM15B 285936 90896 2944 16 16 3 0 0 20 0.53 0 86 0.43 0
RIOK1 239016 56488 54832 21 21 2 0 0 15 0.81 0 120 0.22 0
SERTAD1 62928 21344 3496 12 12 2 0 0 20 1.7 0 69 0.21 0
SLC22A9 240672 70656 37352 18 18 1 0 0 20 1.3 0 100 0.21 0
SLC39A5 242328 91448 38824 15 15 2 0 0 20 0.49 0 78 0.25 0
ST6GALNAC5 131744 36064 17112 25 25 3 2 0 20 1.1 0 140 0.21 0
TMEM184A 144256 43792 20056 19 18 3 0 0 20 0.86 0 100 0.23 0
TP53 173880 50784 37904 119 118 86 0 0 4 0 0 430 0.24 0
YIPF2 154376 49680 22816 17 16 3 0 0 20 1.4 0 89 0.24 0
IRS1 514464 164680 3496 30 29 7 4 0 12 1.4 3.3e-16 140 0.54 2.3e-13
MAGEC1 484104 143888 8096 35 29 11 3 0 5 3 3.3e-16 130 0.34 2.3e-13
OTUD4 447488 124936 66608 43 41 4 3 0 17 0.78 3.3e-16 220 0.21 2.3e-13
PHF13 125856 35512 13432 23 23 2 0 0 20 0.53 3.3e-16 140 0.21 2.3e-13
B4GALT2 155296 48760 20976 16 15 3 0 0 20 0.64 4.4e-16 87 0.4 3e-13
OTOF 809968 232576 145912 30 28 9 0 0 10 0.58 6.7e-16 130 0.2 4.3e-13
ZNF184 335248 81880 18952 19 15 9 0 0 20 0.27 1e-15 78 0.22 6.3e-13
KRAS 111320 27232 19504 142 139 4 1 1 1 3.2 1.2e-15 320 0.44 7.2e-13
SYT15 186392 57224 24472 21 21 3 1 0 10 0.87 1.2e-15 110 0.32 7.2e-13
TTK 386768 95864 74520 20 20 5 0 0 17 0.58 1.4e-15 100 0.22 8.2e-13
MYH10 881544 233128 146096 38 34 7 2 0 2 1.3 1.6e-15 160 0.26 8.3e-13
NFAT5 669392 184552 47472 31 30 5 1 0 20 2.3 1.6e-15 140 0.24 8.3e-13
TMEM175 195224 65136 34224 26 24 5 0 0 20 1.2 1.7e-15 130 0.21 8.7e-13
BRDT

Figure S1.  This figure depicts the distribution of mutations and mutation types across the BRDT significant gene.

CACNA1D

Figure S2.  This figure depicts the distribution of mutations and mutation types across the CACNA1D significant gene.

CCR3

Figure S3.  This figure depicts the distribution of mutations and mutation types across the CCR3 significant gene.

CDH3

Figure S4.  This figure depicts the distribution of mutations and mutation types across the CDH3 significant gene.

CIR1

Figure S5.  This figure depicts the distribution of mutations and mutation types across the CIR1 significant gene.

EDC4

Figure S6.  This figure depicts the distribution of mutations and mutation types across the EDC4 significant gene.

FADS2

Figure S7.  This figure depicts the distribution of mutations and mutation types across the FADS2 significant gene.

MED15

Figure S8.  This figure depicts the distribution of mutations and mutation types across the MED15 significant gene.

NAPSA

Figure S9.  This figure depicts the distribution of mutations and mutation types across the NAPSA significant gene.

NPNT

Figure S10.  This figure depicts the distribution of mutations and mutation types across the NPNT significant gene.

OLIG3

Figure S11.  This figure depicts the distribution of mutations and mutation types across the OLIG3 significant gene.

PAK1

Figure S12.  This figure depicts the distribution of mutations and mutation types across the PAK1 significant gene.

PANK2

Figure S13.  This figure depicts the distribution of mutations and mutation types across the PANK2 significant gene.

RBM15B

Figure S14.  This figure depicts the distribution of mutations and mutation types across the RBM15B significant gene.

RIOK1

Figure S15.  This figure depicts the distribution of mutations and mutation types across the RIOK1 significant gene.

SERTAD1

Figure S16.  This figure depicts the distribution of mutations and mutation types across the SERTAD1 significant gene.

SLC22A9

Figure S17.  This figure depicts the distribution of mutations and mutation types across the SLC22A9 significant gene.

SLC39A5

Figure S18.  This figure depicts the distribution of mutations and mutation types across the SLC39A5 significant gene.

ST6GALNAC5

Figure S19.  This figure depicts the distribution of mutations and mutation types across the ST6GALNAC5 significant gene.

TMEM184A

Figure S20.  This figure depicts the distribution of mutations and mutation types across the TMEM184A significant gene.

TP53

Figure S21.  This figure depicts the distribution of mutations and mutation types across the TP53 significant gene.

YIPF2

Figure S22.  This figure depicts the distribution of mutations and mutation types across the YIPF2 significant gene.

IRS1

Figure S23.  This figure depicts the distribution of mutations and mutation types across the IRS1 significant gene.

MAGEC1

Figure S24.  This figure depicts the distribution of mutations and mutation types across the MAGEC1 significant gene.

OTUD4

Figure S25.  This figure depicts the distribution of mutations and mutation types across the OTUD4 significant gene.

PHF13

Figure S26.  This figure depicts the distribution of mutations and mutation types across the PHF13 significant gene.

B4GALT2

Figure S27.  This figure depicts the distribution of mutations and mutation types across the B4GALT2 significant gene.

OTOF

Figure S28.  This figure depicts the distribution of mutations and mutation types across the OTOF significant gene.

ZNF184

Figure S29.  This figure depicts the distribution of mutations and mutation types across the ZNF184 significant gene.

KRAS

Figure S30.  This figure depicts the distribution of mutations and mutation types across the KRAS significant gene.

SYT15

Figure S31.  This figure depicts the distribution of mutations and mutation types across the SYT15 significant gene.

TTK

Figure S32.  This figure depicts the distribution of mutations and mutation types across the TTK significant gene.

MYH10

Figure S33.  This figure depicts the distribution of mutations and mutation types across the MYH10 significant gene.

NFAT5

Figure S34.  This figure depicts the distribution of mutations and mutation types across the NFAT5 significant gene.

Methods & Data
Methods

In brief, we tabulate the number of mutations and the number of covered bases for each gene. The counts are broken down by mutation context category: four context categories that are discovered by MutSig, and one for indel and 'null' mutations, which include indels, nonsense mutations, splice-site mutations, and non-stop (read-through) mutations. For each gene, we calculate the probability of seeing the observed constellation of mutations, i.e. the product P1 x P2 x ... x Pm, or a more extreme one, given the background mutation rates calculated across the dataset. [1]

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.

References
[1] TCGA, Integrated genomic analyses of ovarian carcinoma, Nature 474:609 - 615 (2011)