A multiple in silico program approach for the prediction of mutagenicity from chemical structure
| Autor: | Robert H Gallavan, Sid Aaron, Anita C White, Alan G.E. Wilson, Richard A Mueller |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Salmonella typhimurium
Computer science business.industry Mutagenicity Tests Health Toxicology and Mutagenesis In silico Machine learning computer.software_genre Proprietary drug Chemical space Ames test Toxicology Structure-Activity Relationship Predictive Value of Tests Test set Genetics Artificial intelligence business Mutagenicity Test computer Software Mutagens |
| Zdroj: | Mutation research. 539(1-2) |
| ISSN: | 0027-5107 |
| Popis: | We have conducted an evaluation of three of the most widely used commercial toxicity prediction programs, Toxicity Prediction by Komputer Assisted Technology (TOPKAT), Deductive Estimation of Risk from Existing Knowledge (DEREK) for Windows (DfW) and CASETOX. The three programs were evaluated for their ability to predict Ames test mutagenicity using 520 proprietary drug candidate (Test set 1) and 94 commercial (Test set 2) compounds. The study demonstrates that these three commercially available programs are useful, with limitations in their ability to predict mutagenicity over a wide range of chemical space, i.e. global predictivity. Individually, each of the programs performed at an acceptable level for overall accuracy, i.e. the ability to predict the correct outcome. However, analysis of the predictions indicates that the overall accuracy figure is heavily weighted by the ability of the programs to correctly predict non-mutagens, whereas none of the programs individually performed well in the prediction of novel mutagenic structures, i.e. Ames positive compounds. The performance of these programs' in predicting Ames positive mutagens appeared to be independent of the chemical utility of the compound, i.e. industrial, agricultural or pharmaceutical. The combination of program predictions provided some improvement in overall accuracy, sensitivity and specificity. |
| Databáze: | OpenAIRE |
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