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SigProfilerPlotting

SigProfilerPlotting provides a standard tool for displaying all types of mutational signatures as well as all types of mutational patterns in cancer genomes. The tool seamlessly integrates with other SigProfiler tools.

INTRODUCTION

The purpose of this document is to provide a guide for using the SigProfilerPlotting framework and associated functions/tools to visualize the output from SigProfilerExtraction and SigProfilerSimulator. An extensive Wiki page detailing the usage of this tool can be found at https://osf.io/2aj6t/wiki/home.

For users that prefer working in an R environment, a wrapper package is provided and can be found and installed from: https://github.com/AlexandrovLab/SigProfilerPlottingR

PREREQUISITES

The framework is written in PYTHON, however, it also requires the following software with the given versions (or newer):

• PYTHON version 3.4 or newer
• SigProfilerMatrixGenerator (recommended)

QUICK START GUIDE

This section will guide you through the minimum steps required to plot mutational matrices:

1. Install the python package using pip:

                          pip install SigProfilerPlotting

2. Plot mutational matrices from a Python session or using the Command Line Interface (CLI) as follows:

Using the Python session, the command is as follows:

$ python3
>> import sigProfilerPlotting as sigPlt
>> sigPlt.plotSBS(matrix_path, output_path, project, plot_type, percentage=False)

The required parameters are:

sigPlt.plotSBS(matrix_path, output_path, project, plot_type)

Using the CLI, the command is as follows:

SigProfilerPlotting plotSBS <matrix_path> <output_path> <project> <plot_type>

3. The final plots are saved into the user-provided output folder.

Single Base Substitution, Double Base Substitution, and Indel Plotting

AVAILABLE FUNCTIONS

import sigProfilerPlotting as sigPlt

sigPlt.plotSBS(matrix_path, output_path, project, plot_type, percentage=False)
sigPlt.plotDBS(matrix_path, output_path, project, plot_type, percentage=False)
sigPlt.plotID(matrix_path, output_path, project, plot_type, percentage=False)

Copy Number and Structural Variant Plotting

import sigProfilerPlotting as sigPlt

matrix_path = "./sigProfilerPlotting/examples/input/breast_cancer_samples_example.CNV48.all" #Output of CNVMatrixGenerator
output_path = "./sigProfilerPlotting/examples/output/"
project = "Breast"

AVAILABLE FUNCTIONS

Multi-page pdf of CNV or SV signatures

sigPlt.plotCNV(matrix_path, output_path, project, percentage=True, aggregate=False) #plotting of CNV signatures
sigPlt.plotSV(matrix_path, output_path, project, percentage=True, aggregate=False) #plotting of SV signatures

Multi-page pdf of CNV or SV counts

sigPlt.plotCNV(matrix_path, output_path, project, percentage=False, aggregate=False) #plotting of CNV counts
sigPlt.plotSV(matrix_path, output_path, project,percentage=False, aggregate=False) #plotting of SV counts

Single pdf of CNV or SV counts per sample for a given cancer type/project

sigPlt.plotCNV(matrix_path, output_path, project, percentage=False, aggregate=True) #plotting of CNV counts
sigPlt.plotSV(matrix_path, output_path, project, percentage, aggregate=True) #plotting of SV counts

matrix_path -> path to the mutational matrix of interest

output_path -> desired output path

project -> name of unique sample set

plot_type -> context of the mutational matrix (96, 192, 78, 94, etc.)

percentage -> Boolean: plot the mutational matrix as percentages of the sample's total mutation count. Default is False

To create a sample portrait, ensure that you have a matrix for all required contexts (SBS-6, SBS-24, SBS-96, SBS-384, SBS-1536, DBS-78, DBS-312, ID-83, ID-28, ID-96)

from sigProfilerPlotting import sample_portrait as sP
sP.samplePortrait(sample_matrices_path, output_path, project, percentage=False)

EXAMPLE

This package comes with an example test for each plot type. Run the script plot_example.py from within the examples directory in the downloaded repo after installation:

python3 sigProfilerPlotting/examples/plot_example.py

This example will create plots for each context for each of the included four samples. These plots will be saved within the sigProfilerPlotting/examples/output/ folder.

CITATION

Bergstrom EN, Huang MN, Mahto U, Barnes M, Stratton MR, Rozen SG, Alexandrov LB: SigProfilerMatrixGenerator: a tool for visualizing and exploring patterns of small mutational events. BMC Genomics 2019, 20:685 https://bmcgenomics.biomedcentral.com/articles/10.1186/s12864-019-6041-2

COPYRIGHT

Copyright (c) 2020, Erik Bergstrom [Alexandrov Lab] All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

CONTACT INFORMATION

Please address any queries or bug reports to Erik Bergstrom at ebergstr@eng.ucsd.edu