the comptox chemistry dashboard v3.0 – new …...the comptox chemistry dashboard v3.0 – new...
TRANSCRIPT
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The CompTox Chemistry Dashboard v3.0 – New Searches and Support for
Bioactivity Data
Antony WilliamsNational Center for Computational Toxicology, U.S. Environmental Protection Agency, RTP, NC
September 27th 2018Communities of Practice
http://www.orcid.org/0000-0002-2668-4821
The views expressed in this presentation are those of the author and do not necessarily reflect the views or policies of the U.S. EPA
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Outline – what’s new in v3.0?
• Welcome the CompTox Portal• New name for the dashboard• User interface overhaul – easier navigation• New search capabilities• Enhanced support for bioactivity data• New data and new lists added• Work in progress
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The CompTox Portalhttps://comptox.epa.gov/
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Watch for our newshttps://comptox.epa.gov/dashboard/news_info
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Release Noteshttps://comptox.epa.gov/dashboard/comptox_release_notes.pdf
• A detailed list of new functionality and fixes
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Staying up with the Dashboardhttps://comptox.epa.gov/dashboard/news_info
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CompTox Chemicals Dashboardhttps://comptox.epa.gov/dashboard
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CompTox DashboardChemicals
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CompTox DashboardProducts and Use Categories
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CompTox DashboardAssays and Genes
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Detailed Chemical PagesNew User Interface Design
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Access to Chemical Hazard Data
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Hazard Data from “ToxVal_DB”Lots of new data added - ECOTOX
• ToxVal Database contains following data:– 30,050 chemicals– 772,721 toxicity values– 29 sources of data– 21,507 sub-sources– 4585 journals cited– 69,833 literature citations
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Sources of Exposure to Chemicals
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What chemicals in what product and use categories?
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What chemicals in what product and use categories?
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Remember home page searchesSearching for “eye”…
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In Vitro Bioassay Screening ToxCast and Tox21
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In Vitro Bioassay Screening ToxCast and Tox21
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Earlier Dashboard Applications
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In Vitro Bioassay Screening ToxCast and Tox21
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Assay Modal Details
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In Vitro Bioassay Screening ToxCast and Tox21
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In Vitro Bioassay Screening Multi-chart Display
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In Vitro Bioassay Screening ToxCast and Tox21
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Assay Modal Details
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List of Chemicals for an Assay
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Choose Display Details
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Tile/Table ModeMore flexibility in table display
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In Vitro Bioassay Screening ToxCast and Tox21
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Access to Analytical QC Data
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Access to Analytical QC Data
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GenRA (Generalised Read-Across)
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GenRA (Generalised Read-Across)
Structure Similarity
Select and Review Analogs
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GenRA (Generalised Read-Across)
Review Available Data Fingerprint indicating available dataSelect and Review Analogs
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GenRA (Generalised Read-Across)
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Run GenRATarget
Source analogues
Red : Toxicity effects. Blue: No Toxicity effectsGrey : Absence of data
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Related Substancese.g. Transformation Products
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UVCB Chemicals
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Related Substances for Markush
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Identifiers to Support Searches
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Literature Searches and Links
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Abstract Sifter – PubMed Integration searching >28 million abstracts
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External Links to ~80 websitesGrowing list of out links -
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Mass and Formula SearchesSupporting Mass Spectrometry
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Advanced SearchesMass Based Search
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Advanced SearchesMass Based Search
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MS-Ready Structureshttps://jcheminf.biomedcentral.com/articles/10.1186/s13321-018-0299-2
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MS-Ready Structures
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MS-Ready Mappings
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MS-Ready Mappings Set
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Batch Searching
• Singleton searches are useful but we work with thousands of chemicals!
• Typical questions– What chemicals can I get for 5000 CAS Numbers?– Can I get predicted properties for 1000 chemicals?– What is the list of chemicals for the formula CxHyOz ?– What is the list of chemicals for a mass +/- error ?– Can I get chemical lists in Excel files? In SDF files?
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Batch Searching
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Batch Searching
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Excel Output
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How can be curate our data?
• Crowdsourcing is well proven nowadays• Comments can be added at a record level
• Submitted comments are reviewed by administrators and responded to
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Public Crowdsourced Commentshttps://comptox.epa.gov/dashboard/comments/public_index
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Comments to date
• The majority of comments to date:– Structure and names/CASRN do not match– Add additional synonyms– Request to add specific property data– Structure layout/depiction needs improving
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Crowdsourcing CommentsSingle Cell Commenting added
• Highlight an alphanumeric text string
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Crowdsourcing Comments
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Lists of Lists
• Lists of chemicals – ca. 100 lists• List of ToxCast/Tox21 assays
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11 PFAS Listshttp://comptox-prod.epa.gov/dashboard/chemical_lists
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The OECD List of PFAShttp://www.oecd.org/chemicalsafety/portal-perfluorinated-chemicals/
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The OECD List of PFAShttp://www.oecd.org/chemicalsafety/portal-perfluorinated-chemicals/
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Want data for a list???
• Simply send to Batch and choose data…
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List of Assays
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Select an Assay to NavigateTile View
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Select an Assay to NavigateTable View
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Real-Time Predictions
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Real-Time Predictions
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Work in Progress
• CFM-ID– Viewing and Downloading pre-predicted spectra– Search spectra against the database
• Structure/substructure/similarity search• pKa prediction
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Predicted Mass Spectrahttp://cfmid.wishartlab.com/
• MS/MS spectra prediction for ESI+, ESI-, and EI• Predictions generated and stored for >700,000
structures, to be accessible via Dashboard
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Library Fragmentation Spectra (20eV)
Observed Fragmentation Spectra (20eV)
Match Score
Predicted Mass Spectra
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Search Expt. vs. Predicted Spectra
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Prototype Development
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Prototype Development
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pKa Prediction Model
• pKa prediction models based on Open Data Set of 8000 chemicals – acidic, basic and amphoteric chemicals
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NCCT “InvitroDB_v3”
• The last public release of ToxCast data (invitroDB_v2) was in 3rd Quarter of 2015
• The next release invitroDB_v3 is Fall 2018• Data includes new assays, new chemicals,
new pipelining, results of data curation• Data will also release via CompTox Dashboard• Data will be available at https://www.epa.gov/chemical-
research/exploring-toxcast-data-downloadable-data
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Downloadable Data Being Updated
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Conclusion
• The CompTox Chemistry Dashboard provides access to data for ~765,000 chemicals
• An expanding list of data types and sources has been integrated
• New searches based on Product Use and Categories and Assay and Gene
• The chemical lists of interest grows with each release
• Next release scheduled for Fall 2018 with InvitroDB_v3 data – more chemicals, more assays
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How is it built?https://jcheminf.springeropen.com/articles/10.1186/s13321-017-0247-6
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Acknowledgments
• Our NCCT CompTox Chemical Dashboard Development and IT Team
• The NCCT Team of Scientists• NERL scientists - Mass Spectrometry• Kamel Mansouri – OPERA models• Todd Martin – TEST predictions
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Contact
Antony WilliamsUS EPA Office of Research and DevelopmentNational Center for Computational Toxicology (NCCT)[email protected]: https://orcid.org/0000-0002-2668-4821
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