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Multistage Carcinogenesis: A Unified Framework for Cancer Data Analysis

  • Suresh Moolgavkar
  • Georg Luebeck
Chapter
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Abstract

Traditional approaches to the analysis of epidemiologic data are focused on estimation of the relative risk and are based on the proportional hazards model. Proportionality of hazards in epidemiologic data is a strong assumption that is often violated but seldom checked. Risk often depends on detailed patterns of exposure to environmental agents, but detailed exposure histories are difficult to incorporate in the traditional approaches to analyses of epidemiologic data. For epidemiologic data on cancer, an alternative approach to analysis can be based on ideas of multistage carcinogenesis. The process of carcinogenesis is characterized by mutation accumulation and clonal expansion of partially altered cells on the pathway to cancer. Although this paradigm is now firmly established, most epidemiologic studies of cancer incorporate ideas of multistage carcinogenesis neither in their design nor in their analyses. In this paper we will briefly discuss stochastic multistage models of carcinogenesis and the construction of the appropriate likelihoods for analyses of epidemiologic data using these models. Statistical analyses based on multistage models can quite explicitly incorporate detailed exposure histories in the construction of the likelihood. We will give examples to show that using ideas of multistage carcinogenesis can help reconcile seemingly contradictory findings, and yield insights into epidemiologic studies of cancer that would be difficult or impossible to get from conventional methods. Finally, multistage cancer models provide a unified framework for analyses of data from diverse sources.

Keywords

Multistage carcinogenesis Stochastic models Clonal expansion model Proportional hazards model Colon cancer Screening Folate supplementation 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Suresh Moolgavkar
    • 1
    • 2
  • Georg Luebeck
    • 3
  1. 1.Fred Hutchinson Cancer Research CenterSeattleUSA
  2. 2.Exponent, Inc.BellevueUSA
  3. 3.Fred Hutchinson Cancer Research CenterSeattleUSA

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