Dingzhou Li, Jeonifer Garren, Raja Mangipudy, Matthew Martin, Lindsay Tomlinson, Nichole R Vansell
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引用次数: 0
Abstract
Utilization of data from historical control animals to form virtual control groups (VCGs) is an innovative approach to embody the 3Rs (reduce, refine, and replace use of control animals) principle in research. However, there is no available systematic comparison of statistical performance between concurrent control groups (CCGs) and VCGs in nonrodent safety assessment. The optimal selection criteria and combination of VCGs and CCGs also remain unclear. This study retrospectively evaluated VCGs' statistical performance to detect test article effects on body weight and clinical pathology endpoints in dog and nonhuman primate (NHP) systemic toxicity studies. Body weight and six clinical pathology endpoints were analyzed against the reported study findings from a cohort of 22 previously reported nonrodent 1-month oral gavage toxicity using three different methods of generating VCGs. When the fold change from baseline was used, VCGs yielded a similar or higher statistical sensitivity to detect test article relatedness than CCGs. Compared to simple random sampling or using fixed criteria, the propensity score matching by BW, age, and year of study initiation yielded higher sensitivities. Our analysis supports the hypothesis that VCGs can be a viable instrument in nonrodent toxicity studies.
期刊介绍:
Regulatory Toxicology and Pharmacology publishes peer reviewed articles that involve the generation, evaluation, and interpretation of experimental animal and human data that are of direct importance and relevance for regulatory authorities with respect to toxicological and pharmacological regulations in society. All peer-reviewed articles that are published should be devoted to improve the protection of human health and environment. Reviews and discussions are welcomed that address legal and/or regulatory decisions with respect to risk assessment and management of toxicological and pharmacological compounds on a scientific basis. It addresses an international readership of scientists, risk assessors and managers, and other professionals active in the field of human and environmental health.
Types of peer-reviewed articles published:
-Original research articles of relevance for regulatory aspects covering aspects including, but not limited to:
1.Factors influencing human sensitivity
2.Exposure science related to risk assessment
3.Alternative toxicological test methods
4.Frameworks for evaluation and integration of data in regulatory evaluations
5.Harmonization across regulatory agencies
6.Read-across methods and evaluations
-Contemporary Reviews on policy related Research issues
-Letters to the Editor
-Guest Editorials (by Invitation)