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Evaluation of QSAR models for the prediction of ames genotoxicity: a retrospective exercise on the chemical substances registered under the EU REACH regulation.

Authors
  • Cassano, Antonio
  • Raitano, Giuseppa
  • Mombelli, Enrico
  • Fernández, Alberto
  • Cester, Josep
  • Roncaglioni, Alessandra
  • Benfenati, Emilio
Type
Published Article
Journal
Journal of environmental science and health. Part C, Environmental carcinogenesis & ecotoxicology reviews
Publication Date
Jan 01, 2014
Volume
32
Issue
3
Pages
273–298
Identifiers
DOI: 10.1080/10590501.2014.938955
PMID: 25226221
Source
Medline
Keywords
License
Unknown

Abstract

We evaluated the performance of seven freely available quantitative structure-activity relationship models predicting Ames genotoxicity thanks to a dataset of chemicals that were registered under the EU Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulation. The performance of the models was estimated according to Cooper's statistics and Matthew's Correlation Coefficients (MCC). The Benigni/Bossa rule base originally implemented in Toxtree and re-implemented within the Virtual models for property Evaluation of chemicals within a Global Architecture (VEGA) platform displayed the best performance (accuracy = 92%, sensitivity = 83%, specificity = 93%, MCC = 0.68) indicating that this rule base provides a reliable tool for the identification of genotoxic chemicals. Finally, we elaborated a consensus model that outperformed the accuracy of the individual models.

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