The use of biologically based cancer risk models in radiation epidemiology.
Biologically based risk projection models for radiation carcinogenesis seek to describe the fundamental biological processes involved in neoplastic transformation of somatic cells into malignant cancer cells. A validated biologically based model, whose parameters have a direct biological interpretation, can also be used to extrapolate cancer risks to different exposure conditions with some confidence. In this article biologically based models for radiation carcinogenesis, including the two-stage clonal expansion (TSCE) model and its extensions, are reviewed. The biological and mathematical bases for such models are described, and the implications of key model parameters for cancer risk assessment examined. Specific applications of versions of the TSCE model to important epidemiological datasets are discussed, including the Colorado uranium miners' cohort; a cohort of Chinese tin miners; the lifespan cohort of atomic bomb survivors in Hiroshima and Nagasaki; and a cohort of over 200,000 workers included in the National Dose Registry (NDR) of Canada.
McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, One Stewart Street, Room 320, Ottawa, Ontario, Canada K1N 6N5. stherien@uottawa.ca
D
D
Krewski
J M
JM
Zielinski
W D
WD
Hazelton
M J
MJ
Garner
S H
SH
Moolgavkar
D002170:Canada / Q000453:epidemiology; D002471:Cell Transformation, Neoplastic / Q000528:radiation effects; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008175:Lung Neoplasms / Q000401:mortality*; D008297:Male; D008906:Mining; D008954:Models, Biological; D009381:Neoplasms, Radiation-Induced / Q000401:mortality*; D009689:Nuclear Warfare; D016273:Occupational Exposure / Q000032:analysis; D016016:Proportional Hazards Models; D011829:Radiation Dosage; D011874:Radiometry / Q000706:statistics & numerical data*; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D016019:Survival Analysis; D017741:Survivors; D014481:United States / Q000453:epidemiology; D014501:Uranium / Q000032:analysis
D014501:Uranium