Global analysis of publicly available safety data for 9,801 substances registered under REACH from 2008-2014

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2016
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Luechtefeld, Thomas
Maertens, Alexandra
Russo, Daniel P.
Zhu, Hao
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Alternatives to Animal Experimentation : ALTEX. 2016, 33(2), pp. 95-109. ISSN 0946-7785. eISSN 1868-8551. Available under: doi: 10.14573/altex.1510052
Zusammenfassung

The European Chemicals Agency (ECHA) warehouses the largest public dataset of in vivo and in vitro toxicity tests. In December 2014 this data was converted into a structured, machine readable and searchable database using linguistic search engines. It contains data for 9,801 unique substances, 3,609 unique study descriptions and 816,048 study documents.This allows exploring toxicological data on a scale far larger than previously available. Substance similarity analysis was used to determine clustering of substances for hazards by mapping to PubChem. Similarity was measured using PubChem 2D conformational substructure fingerprints, which were compared via the Tanimoto metric. Following K-Core filtration, the Blondel et al.(2008) module recognition algorithm was used to identify chemical modules showing clusters of substances in use within the chemical universe. Global Harmonized System of Classification and Labelling provides a valuable information source for hazard analysis. The most prevalent hazards are H317 "May cause an allergic skin reaction" with 20% and H318 "Causes serious eye damage" with 17% positive substances. Such prevalences obtained for all hazards here are key for the design of integrated testing strategies. The data allowed estimation of animal use. ECHA cover about 20% of substances in the high-throughput biological assay database Tox21 (1,737 substances) and have a 917 substance overlap with the Comparative Toxicogenomics Database (~7% of CTD). The biological data available in these datasets combined with ECHA in vivo endpoints have enormous modeling potential. A case is made that REACH should systematically open regulatory data for research purposes.

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ISO 690LUECHTEFELD, Thomas, Alexandra MAERTENS, Daniel P. RUSSO, Costanza ROVIDA, Hao ZHU, Thomas HARTUNG, 2016. Global analysis of publicly available safety data for 9,801 substances registered under REACH from 2008-2014. In: Alternatives to Animal Experimentation : ALTEX. 2016, 33(2), pp. 95-109. ISSN 0946-7785. eISSN 1868-8551. Available under: doi: 10.14573/altex.1510052
BibTex
@article{Luechtefeld2016Globa-35664,
  year={2016},
  doi={10.14573/altex.1510052},
  title={Global analysis of publicly available safety data for 9,801 substances registered under REACH from 2008-2014},
  number={2},
  volume={33},
  issn={0946-7785},
  journal={Alternatives to Animal Experimentation : ALTEX},
  pages={95--109},
  author={Luechtefeld, Thomas and Maertens, Alexandra and Russo, Daniel P. and Rovida, Costanza and Zhu, Hao and Hartung, Thomas}
}
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