PMID- 28602621 OWN - NLM STAT- MEDLINE DCOM- 20180417 LR - 20181202 IS - 1096-0295 (Electronic) IS - 0273-2300 (Linking) VI - 88 DP - 2017 Aug TI - Binary test battery with KeratinoSens and h-CLAT as part of a bottom-up approach for skin sensitization hazard prediction. PG - 118-124 LID - S0273-2300(17)30152-6 [pii] LID - 10.1016/j.yrtph.2017.06.002 [doi] AB - Skin sensitization is one of the key safety endpoints for chemicals applied directly to the skin. Several integrated testing strategies (ITS) using multiple non-animal test methods have been developed to accurately evaluate the sensitizing potential of chemicals, but there is no regulatory-accepted ITS to classify a chemical as a non-sensitizer. In this study, the predictive performance of a binary test battery with KeratinoSens and h-CLAT compared to the local lymph node assay (LLNA) and human data was examined using comprehensive dataset of 203 chemicals. When two negative results indicate a non-sensitizer, the binary test battery provided sensitivity of 93.4% or 94.4% compared with the LLNA or human data. Taking into account the predictive limitations (i.e. high log Kow, pre-/pro-haptens and acyl transfer agents (or amine-reactive)), the binary test battery had extremely high sensitivity comparable to that of the 3 out of 3 ITS where three negative results of the DPRA, KeratinoSens and h-CLAT indicate a non-sensitizer. Therefore, the data from KeratinoSens or h-CLAT may provide partly redundant information on the molecular initiating event derived from DPRA. Taken together, the binary test battery of KeratinoSens and h-CLAT could be used as part of a bottom-up approach for skin sensitization hazard prediction. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Otsubo, Yuki AU - Otsubo Y AD - Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi 321-3497, Japan. FAU - Nishijo, Taku AU - Nishijo T AD - Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi 321-3497, Japan. FAU - Miyazawa, Masaaki AU - Miyazawa M AD - Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi 321-3497, Japan. Electronic address: miyazawa.masaaki@kao.co.jp. FAU - Saito, Kazutoshi AU - Saito K AD - Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi 321-3497, Japan. FAU - Mizumachi, Hideyuki AU - Mizumachi H AD - Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi 321-3497, Japan. FAU - Sakaguchi, Hitoshi AU - Sakaguchi H AD - Safety Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai, Haga, Tochigi 321-3497, Japan. LA - eng PT - Journal Article DEP - 20170607 PL - Netherlands TA - Regul Toxicol Pharmacol JT - Regulatory toxicology and pharmacology : RTP JID - 8214983 RN - 0 (Allergens) SB - IM MH - Allergens/*adverse effects MH - Animal Testing Alternatives MH - Animals MH - Cell Line MH - Dermatitis, Allergic Contact/*diagnosis MH - Humans MH - *Local Lymph Node Assay MH - Sensitivity and Specificity MH - Skin/drug effects OTO - NOTNLM OT - Bottom-up approach OT - Hazard identification OT - KeratinoSens OT - Skin sensitization OT - h-CLAT EDAT- 2017/06/13 06:00 MHDA- 2018/04/18 06:00 CRDT- 2017/06/13 06:00 PHST- 2017/02/05 00:00 [received] PHST- 2017/04/12 00:00 [revised] PHST- 2017/06/05 00:00 [accepted] PHST- 2017/06/13 06:00 [pubmed] PHST- 2018/04/18 06:00 [medline] PHST- 2017/06/13 06:00 [entrez] AID - S0273-2300(17)30152-6 [pii] AID - 10.1016/j.yrtph.2017.06.002 [doi] PST - ppublish SO - Regul Toxicol Pharmacol. 2017 Aug;88:118-124. doi: 10.1016/j.yrtph.2017.06.002. Epub 2017 Jun 7.