Genotoxicity assessment of chemical mixtures
The EFSA Scientific Committee addressed in this document the peculiarities related to the genotoxicity assessment of chemical mixtures. The EFSA Scientific Committee suggests that first a mixture should be chemically characterised as far as possible. Although the characterisation of mixtures is rele...
Saved in:
Published in | EFSA journal Vol. 17; no. 1; pp. e05519 - n/a |
---|---|
Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
European Food Safety Authority
01.01.2019
John Wiley and Sons Inc Wiley |
Series | EFSA Journal |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The EFSA Scientific Committee addressed in this document the peculiarities related to the genotoxicity assessment of chemical mixtures. The EFSA Scientific Committee suggests that first a mixture should be chemically characterised as far as possible. Although the characterisation of mixtures is relevant also for other toxicity aspects, it is particularly significant for the assessment of genotoxicity. If a mixture contains one or more chemical substances that are individually assessed to be genotoxic in vivo via a relevant route of administration, the mixture raises concern for genotoxicity. If a fully chemically defined mixture does not contain genotoxic chemical substances, the mixture is of no concern with respect to genotoxicity. If a mixture contains a fraction of chemical substances that have not been chemically identified, experimental testing of the unidentified fraction should be considered as the first option or, if this is not feasible, testing of the whole mixture should be undertaken. If testing of these fraction(s) or of the whole mixture in an adequately performed set of in vitro assays provides clearly negative results, the mixture does not raise concern for genotoxicity. If in vitro testing provides one or more positive results, an in vivo follow‐up study should be considered. For negative results in the in vivo follow‐up test(s), the possible limitations of in vivo testing should be weighed in an uncertainty analysis before reaching a conclusion of no concern with respect to genotoxicity. For positive results in the in vivo follow‐up test(s), it can be concluded that the mixture does raise a concern about genotoxicity.
This publication is linked to the following EFSA Supporting Publications article: http://onlinelibrary.wiley.com/doi/10.2903/sp.efsa.2019.EN-1539/full |
---|---|
Bibliography: | http://onlinelibrary.wiley.com/doi/10.2903/sp.efsa.2019.EN-1539/full This publication is linked to the following EFSA Supporting Publications article ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Scientific Committee: Simon More, Vasileios Bampidis, Jos Boesten, Diane Benford, Claude Bragard, Thorhallur Halldorsson, Antonio Hernandez‐Jerez, Susanne Hougaard‐Bennekou, Kostas Koutsoumanis, Søren Saxmose Nielsen, Hanspeter Naegeli, Josef Schlatter, Dieter Schrenk, Vittorio Silano, Dominique Turck, Maged Younes. Adopted: 22 November 2018 Acknowledgements: The Scientific Committee wishes to thank the following for the support provided to this scientific output: WG member Christiane Vleminckx, Jan van Benthem (hearing expert), Karl Heinz Engel (hearing expert) and Paul White (hearing experts); EFSA staff Paola Manini, Annamaria Rossi, Maria Vittoria Vettori. Requestor: Scientific Committee Question number: EFSA‐Q‐2018–00126 This publication is linked to the following EFSA Supporting Publications article: http://onlinelibrary.wiley.com/doi/10.2903/sp.efsa.2019.EN-1539/full |
ISSN: | 1831-4732 1831-4732 |
DOI: | 10.2903/j.efsa.2019.5519 |