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Micro-CT Imaging: Developing criteria for examining fetal skeletons in regulatory developmental toxicology studies - A Workshop Report

Delise, Anthony and Solomen, Howard M. and Makris, Susan L. and Alsaid, Hasan and Bermudex, Oscar and Beyer, Bruce K. and Chen, Antong and Chen, Connie L. and Chen, Zhou and Chmielewski, Gary and De Schaepdrijver, Luc and Dogdas, Belma and French, Julian and Harrouck, Waffa and Helfott, Jonathan and Henkelman, R. Mark and Hesterman, Jacob and Hew, Kok-Wah and Hoberman, Alan and Lo, Cecilia and McDougal, Andrew and Mink, Daniel and Scott, Lelia and Stewart, Jane and Sutherland, Vicki and Tatiparthi, Arun K. and Winkelmann, Christopher T. and Wise, L. David and Wood, Sandra L. and Ying, Xiaoyou (2016) Micro-CT Imaging: Developing criteria for examining fetal skeletons in regulatory developmental toxicology studies - A Workshop Report. Regulatory Toxicology and Pharmacology, 77. pp. 100-108. ISSN 02732300

Abstract

During the past two decades the use and refinements of imaging modalities have markedly increased making it possible to image embryos and fetuses used in pivotal nonclinical studies submitted to regulatory agencies. Implementing these technologies into the Good Laboratory Practice environment requires rigorous testing, validation and documentation to ensure the reproducibility of data. A workshop on current practices and regulatory requirements was held with the goal of defining minimal criteria for the proper implementation of these technologies and subsequent submission to regulatory agencies. Micro-computed tomography (micro-CT) is especially well suited for high-throughput evaluations, and is gaining popularity to evaluate fetal skeletons to assess the potential developmental toxicity of test agents. This workshop was convened to help scientists in the developmental toxicology field understand and apply micro-CT technology to nonclinical toxicology studies and facilitate the regulatory acceptance of imaging data. Presentations and workshop discussions covered: (1) principles of micro-CT fetal imaging; (2) concordance of findings with conventionally stained specimens; and (3) regulatory requirements for validating the system. Establishing these requirements for micro-CT examination can provide a path forward for laboratories considering implementing this technology and provide regulatory agencies with a basis to consider the acceptability of data generated via this technology.

Item Type: Article
Keywords: concordance criteria; developmental toxicology; imaging; micro-CT; skeletal evaluation; GLP validation
Date Deposited: 26 Apr 2016 23:45
Last Modified: 26 Apr 2016 23:45
URI: https://oak.novartis.com/id/eprint/27932

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