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[Initiation, promotion, initiation experiments with radon and cigarette smoke: Lung tumors in rats]. Progress report

Technical Report ·
DOI:https://doi.org/10.2172/10185044· OSTI ID:10185044
During the past several years, the authors have made considerable progress in modeling carcinogenesis in general, and in modeling radiation carcinogenesis, in particular. They present an overview of their progress in developing stochastic carcinogenesis models and applying them to experimental and epidemiologic data sets. Traditionally, cancer models have been used for the analysis of incidence (or prevalence) data in epidemiology and time to tumor data in experimental studies. The relevant quantities for the analysis of these data are the hazard function and the probability of tumor. The derivation of these quantities is briefly described here. More recently, the authors began to use these models for the analysis of data on intermediate lesions on the pathway to cancer. Such data are available in experimental carcinogenesis studies, in particular in initiation and promotion studies on the mouse skin and the rat liver. If however, quantitative information on intermediate lesions on the pathway to lung cancer were to be come available at some future date, the methods that they have developed for the analysis of initiation-promotion experiments could easily be applied to the analysis of these lesions. The mathematical derivations here are couched in terms of a particular two-mutation model of carcinogenesis. Extension to models postulating more than two mutations is not always straightforward.
Research Organization:
Fred Hutchinson Cancer Research Center, Seattle, WA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
FG06-88ER60657
OSTI ID:
10185044
Report Number(s):
DOE/ER/60657--6; ON: DE95000409; BR: HA0202010/KP0302000
Country of Publication:
United States
Language:
English