Mutation Analysis (MutSigCV v0.9)
Pancreatic Adenocarcinoma (Primary solid tumor)
23 September 2013  |  analyses__2013_09_23
Maintainer Information
Citation Information
Maintained by Dan DiCara (Broad Institute)
Cite as Broad Institute TCGA Genome Data Analysis Center (2013): Mutation Analysis (MutSigCV v0.9). Broad Institute of MIT and Harvard. doi:10.7908/C1Z31X0B
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: 57

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
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).

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: 298. 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
MED15 99123 28329 9990 14 12 6 0 0 20 0.71 0 61 0.039 0
TP53 53865 15732 6180 37 37 33 0 0 4 0 1.6e-15 110 0.074 8.9e-12
RANGAP1 72105 21660 7530 13 12 3 1 0 20 0.84 2.1e-15 61 0.039 8.9e-12
VAMP3 14193 3819 2730 8 8 1 0 0 20 0.99 2.3e-15 49 0.04 8.9e-12
TMEM40 29184 8208 5700 9 9 2 0 0 20 0.96 2.4e-15 52 0.039 8.9e-12
PTTG1IP 20178 5187 3030 9 9 1 0 0 20 1.3 4.6e-15 52 0.039 1.4e-11
FUZ 39159 12882 4500 11 11 1 0 0 20 0.48 6.2e-15 64 0.04 1.6e-11
HAMP 11685 3249 1920 8 8 1 0 0 17 0.58 7.7e-15 48 0.044 1.7e-11
CXXC4 26163 7923 1320 9 9 2 0 0 20 0.7 1e-14 53 0.066 1.9e-11
TCF20 259578 75924 2970 24 16 7 3 0 20 1.7 1e-14 74 0.041 1.9e-11
HRCT1 10773 3933 390 8 8 1 0 0 20 1.4 1.2e-14 48 0.04 2e-11
HOXA1 45144 12369 1320 12 11 2 0 0 20 0.66 1.4e-14 62 0.041 2.2e-11
NOS1AP 66519 19323 6750 12 12 2 0 0 20 0.71 1.9e-14 61 0.041 2.6e-11
IL32 23256 6099 3270 9 9 2 0 0 20 1.4 2.1e-14 49 0.04 2.7e-11
LNP1 29754 7923 2160 9 9 1 1 0 20 1.1 2.6e-14 52 0.039 3.2e-11
NAP1L5 24054 6156 660 8 8 2 0 0 20 1.2 3e-14 48 0.04 3.4e-11
OR10A7 41496 12369 810 9 9 1 0 0 20 1 1e-13 50 0.039 1.1e-10
CDKN2A 34314 9747 1860 13 13 11 0 0 6 0.73 1.3e-13 63 0.04 1.4e-10
MDFI 29526 9177 1890 8 8 1 0 0 20 0.86 1.8e-13 47 0.039 1.8e-10
CDC27 111036 30039 10530 11 11 1 0 0 20 1.2 3.2e-13 59 0.04 2.9e-10
SF3A1 98895 27474 8280 11 11 1 1 0 20 1.4 4.9e-13 58 0.04 4.3e-10
ATP6V1C2 62130 17214 8340 10 10 2 1 0 20 1.1 1e-12 51 0.039 8.3e-10
TREML2 40185 12882 7770 10 10 2 0 0 13 1.1 1.3e-12 50 0.039 1e-09
CPXM2 89661 24909 7740 10 10 3 0 0 19 0.66 1.5e-12 54 0.039 1.1e-09
FXR2 69768 21603 5880 10 10 2 1 0 20 0.8 3.9e-12 50 0.039 2.9e-09
RSPH6A 98952 28557 3510 11 10 3 0 0 20 0.96 4.5e-12 54 0.039 3.2e-09
GAL3ST2 21774 6897 1590 7 7 1 0 0 18 1.2 1e-11 41 0.038 6.8e-09
PASD1 97470 26106 8610 12 12 2 0 0 11 1.2 1.1e-11 57 0.04 6.9e-09
TSPAN4 30666 9291 3900 8 8 2 0 0 13 0 2.2e-11 45 0.039 1.4e-08
TMEM19 44802 13794 3720 8 8 2 0 0 20 0.63 2.2e-11 42 0.039 1.4e-08
PCP4L1 8436 2280 840 6 6 1 0 0 20 1.9 2.3e-11 36 0.038 1.4e-08
HOXB2 41781 13965 1170 9 9 2 0 0 20 1.7 5.3e-11 48 0.04 3e-08
TMCO2 24510 6897 1320 7 7 2 0 0 20 0.88 6.8e-11 37 0.039 3.8e-08
C14orf49 121809 36480 9360 9 9 1 1 0 20 0.67 7.2e-11 48 0.039 3.9e-08
SRP14 20121 5871 3210 7 7 1 0 0 13 1.7 9.1e-11 40 0.044 4.7e-08
MED15

Figure S1.  This figure depicts the distribution of mutations and mutation types across the MED15 significant gene.

TP53

Figure S2.  This figure depicts the distribution of mutations and mutation types across the TP53 significant gene.

RANGAP1

Figure S3.  This figure depicts the distribution of mutations and mutation types across the RANGAP1 significant gene.

VAMP3

Figure S4.  This figure depicts the distribution of mutations and mutation types across the VAMP3 significant gene.

TMEM40

Figure S5.  This figure depicts the distribution of mutations and mutation types across the TMEM40 significant gene.

PTTG1IP

Figure S6.  This figure depicts the distribution of mutations and mutation types across the PTTG1IP significant gene.

FUZ

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

CXXC4

Figure S8.  This figure depicts the distribution of mutations and mutation types across the CXXC4 significant gene.

TCF20

Figure S9.  This figure depicts the distribution of mutations and mutation types across the TCF20 significant gene.

HRCT1

Figure S10.  This figure depicts the distribution of mutations and mutation types across the HRCT1 significant gene.

HOXA1

Figure S11.  This figure depicts the distribution of mutations and mutation types across the HOXA1 significant gene.

NOS1AP

Figure S12.  This figure depicts the distribution of mutations and mutation types across the NOS1AP significant gene.

IL32

Figure S13.  This figure depicts the distribution of mutations and mutation types across the IL32 significant gene.

LNP1

Figure S14.  This figure depicts the distribution of mutations and mutation types across the LNP1 significant gene.

NAP1L5

Figure S15.  This figure depicts the distribution of mutations and mutation types across the NAP1L5 significant gene.

OR10A7

Figure S16.  This figure depicts the distribution of mutations and mutation types across the OR10A7 significant gene.

CDKN2A

Figure S17.  This figure depicts the distribution of mutations and mutation types across the CDKN2A significant gene.

MDFI

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

CDC27

Figure S19.  This figure depicts the distribution of mutations and mutation types across the CDC27 significant gene.

SF3A1

Figure S20.  This figure depicts the distribution of mutations and mutation types across the SF3A1 significant gene.

ATP6V1C2

Figure S21.  This figure depicts the distribution of mutations and mutation types across the ATP6V1C2 significant gene.

TREML2

Figure S22.  This figure depicts the distribution of mutations and mutation types across the TREML2 significant gene.

CPXM2

Figure S23.  This figure depicts the distribution of mutations and mutation types across the CPXM2 significant gene.

FXR2

Figure S24.  This figure depicts the distribution of mutations and mutation types across the FXR2 significant gene.

RSPH6A

Figure S25.  This figure depicts the distribution of mutations and mutation types across the RSPH6A significant gene.

GAL3ST2

Figure S26.  This figure depicts the distribution of mutations and mutation types across the GAL3ST2 significant gene.

PASD1

Figure S27.  This figure depicts the distribution of mutations and mutation types across the PASD1 significant gene.

TSPAN4

Figure S28.  This figure depicts the distribution of mutations and mutation types across the TSPAN4 significant gene.

TMEM19

Figure S29.  This figure depicts the distribution of mutations and mutation types across the TMEM19 significant gene.

PCP4L1

Figure S30.  This figure depicts the distribution of mutations and mutation types across the PCP4L1 significant gene.

HOXB2

Figure S31.  This figure depicts the distribution of mutations and mutation types across the HOXB2 significant gene.

TMCO2

Figure S32.  This figure depicts the distribution of mutations and mutation types across the TMCO2 significant gene.

C14orf49

Figure S33.  This figure depicts the distribution of mutations and mutation types across the C14orf49 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)