Administrative Core – Abstract The Center for the Assessment of Tobacco Regulations (CAsToR) aims to provide a comprehensive approach for estimating the population impacts of FDA regulations. Our integrative theme is to provide the CTP external modeling capabilities to evaluate the potential health and behavioral impacts of individual and combined regulations. The primary scientific domains of the Center are Impact Analysis, Behavior, and Health Effects. The purpose of the Administrative Core is to provide and integrate scientific leadership, administrative support, and fiscal management for the entire Center.