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ICCVAM Contributions to OECD Activities

ICCVAM member agencies participate in the development and national review of chemical testing guidelines issued by the Test Guidelines Programme of the Organisation for Economic Co-operation and Development (OECD). OECD guidelines are used by government, industry, and independent laboratories of the 38 OECD member countries to assess chemical safety. ICCVAM members also serve on OECD expert groups for topic areas such as skin sensitization, eye irritation, and quantitative structure-activity relationship modeling.

The U.S. National Coordinators for the OECD Test Guidelines Programme, who are members of ICCVAM, solicit and collate U.S. comments on draft test guidelines and other documents of the Test Guidelines Programme. The National Coordinators represent the United States at the Working Group of National Coordinators annual meeting and in other test guideline development activities.

Ongoing Activities and Documents Under Review
  • NICEATM and ICCVAM scientists contributed to a proposal to update OECD Test Guideline 496 for in vitro test methods to identify eye irritants to add the OptiSafe test method to the guideline. A new project to revise Test Guideline 496 to include OptiSafe was accepted by OECD in April 2022.
  • NICEATM and ICCVAM scientists also contributed to two proposals to update OECD Guideline 497 for defined approaches to skin sensitization to include new information sources for defined approaches. A new project to revise Test Guideline 497 was accepted by OECD in April 2022.
  • NICEATM scientists participate on a peer review panel for an OECD-coordinated study to evaluate the use of the kinetic direct peptide reactivity assay for classifying substances for skin sensitization potency. 
  • ICCVAM agency scientists are participating in an Thyroid Disruption Methods Expert Group, established in 2022.
  • NICEATM and ICCVAM scientists are participating in a group developing a "Case Study on the Use of an Integrated Approach to Testing and Assessment for Identifying Androgen Receptor Active Chemicals," submitted to the OECD Working Party on Hazard Assessment in 2019.
  • NICEATM and ICCVAM scientists participate in annual meetings of the OECD Validation Management Group-Non-animal, which focuses on evaluation of new methods for identifying endocrine disruptors.
Recent Activities
  • ICCVAM members participated on an expert group to develop a guideline for skin sensitization defined approaches. "Guideline No. 497: Defined approaches on skin sensitization" was adopted in June 2021. It describes defined approaches with respect to their intended regulatory purposes of hazard identification or potency subcategorization.
    The proposal to develop the guideline for defined approaches was a product of a 2016 skin sensitization workshop convened by the International Cooperation on Alternative Test Methods.
  • ICCVAM members contributed to a retrospective review of available data and information to support an OECD test guideline for a human reconstructed epidermis model for phototoxicity testing. "Test No. 498: In vitro phototoxicity - reconstructed human epidermis phototoxicity test method" was adopted in June 2021.
  • NICEATM and ICCVAM scientists participated in a group developing a "Case Study on the Use of an Integrated Approach to Testing and Assessment for Identifying Estrogen Receptor Active Chemicals," submitted to the OECD Working Party on Hazard Assessment. This case study was published in September 2019, and has since been adapted to create a proposal for a defined approach for estrogenic activity, submitted to the OECD in November 2019.
  • NICEATM scientists participated in expert meetings on skin sensitization and skin and eye irritation in 2016, 2017, and 2018, which produced at least 15 updates to OECD test guidelines issued in 2017 through 2019.