PMID- 33038465 OWN - NLM STAT- MEDLINE DCOM- 20210916 LR - 20210916 IS - 1879-3177 (Electronic) IS - 0887-2333 (Linking) VI - 70 DP - 2021 Feb TI - Comparison of the predictive nature of the Genomic Allergen Rapid Detection (GARD) assay with mammalian assays in determining the skin sensitisation potential of agrochemical active ingredients. PG - 105017 LID - S0887-2333(20)30567-1 [pii] LID - 10.1016/j.tiv.2020.105017 [doi] AB - Alternatives to mammalian testing are highly desirable to predict the skin sensitisation potential of agrochemical active ingredients (AI). The GARD assay, a stimulated, dendritic cell-like, cell line measuring genomic signatures, was evaluated using twelve AIs (seven sensitisers and five non-sensitisers) and the results compared with historical results from guinea pig or local lymph node assay (LLNA) studies. Initial GARD results suggested 11/12 AIs were sensitisers and six concurred with mammalian data. Conformal predictions changed one AI to a non-sensitiser. An AI identified as non-sensitising in the GARD assay was considered a potent sensitiser in the LLNA. In total 7/12 GARD results corresponded with mammalian data. AI chemistries might not be comparable to the GARD training set in terms of applicability domains. Whilst the GARD assay can replace mammalian tests for skin sensitisation evaluation for compounds including cosmetic ingredients, further work in agrochemical chemistries is needed for this assay to be a viable replacement to animal testing. The work conducted here is, however, considered exploratory research and the methodology needs further development to be validated for agrochemicals. Mammalian and other alternative assays for regulatory safety assessments of AIs must provide confidence to assign the appropriate classification for human health protection. CI - Copyright (c) 2020 Elsevier Ltd. All rights reserved. FAU - Masinja, William AU - Masinja W AD - Syngenta, International Research Centre, Jealott's Hill, Bracknell, Berks RG42 6EY, United Kingdom; School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, United Kingdom. Electronic address: william.masinja@syngenta.com. FAU - Elliott, Claire AU - Elliott C AD - Syngenta, International Research Centre, Jealott's Hill, Bracknell, Berks RG42 6EY, United Kingdom; Penman Consulting Limited, Aspect House, Waylands Avenue, Wantage, Oxon OX12 9FF, United Kingdom. FAU - Modi, Sandeep AU - Modi S AD - Syngenta, International Research Centre, Jealott's Hill, Bracknell, Berks RG42 6EY, United Kingdom. FAU - Enoch, Steven J AU - Enoch SJ AD - School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, United Kingdom. FAU - Cronin, Mark T D AU - Cronin MTD AD - School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, United Kingdom. FAU - McInnes, Elizabeth F AU - McInnes EF AD - Syngenta, International Research Centre, Jealott's Hill, Bracknell, Berks RG42 6EY, United Kingdom. FAU - Currie, Richard A AU - Currie RA AD - Syngenta, International Research Centre, Jealott's Hill, Bracknell, Berks RG42 6EY, United Kingdom. LA - eng PT - Comparative Study PT - Journal Article DEP - 20201008 PL - England TA - Toxicol In Vitro JT - Toxicology in vitro : an international journal published in association with BIBRA JID - 8712158 RN - 0 (Agrochemicals) RN - 0 (Allergens) RN - 0 (Haptens) SB - IM MH - Agrochemicals/*toxicity MH - Allergens/*toxicity MH - Animal Testing Alternatives MH - Animals MH - Biological Assay/*methods MH - Cell Line, Tumor MH - Dermatitis, Allergic Contact MH - Genomics/*methods MH - Guinea Pigs MH - Haptens/*toxicity MH - Humans MH - Mice MH - Skin/drug effects MH - Skin Tests/*methods OTO - NOTNLM OT - Agrochemicals OT - Chemical domain OT - GARD assay OT - Mammalian testing OT - Skin sensitisation prediction EDAT- 2020/10/11 06:00 MHDA- 2021/09/18 06:00 CRDT- 2020/10/10 20:09 PHST- 2020/07/20 00:00 [received] PHST- 2020/09/25 00:00 [revised] PHST- 2020/10/05 00:00 [accepted] PHST- 2020/10/11 06:00 [pubmed] PHST- 2021/09/18 06:00 [medline] PHST- 2020/10/10 20:09 [entrez] AID - S0887-2333(20)30567-1 [pii] AID - 10.1016/j.tiv.2020.105017 [doi] PST - ppublish SO - Toxicol In Vitro. 2021 Feb;70:105017. doi: 10.1016/j.tiv.2020.105017. Epub 2020 Oct 8.