© 1999 by Oxford University Press
Journal of the National Cancer Institute, Vol. 91, No. 23, 1985-1986,
December 1, 1999
© 1999 Oxford University Press
EDITORIALS |
Gene-by-Environment Interaction for Passive Smoking and Glutathione S-Transferase M1?
Affiliations of authors: C. R. Weinberg (Biostatistics Branch). D. P. Sandler (Epidemiology Branch), National Institute of Environmental Health Sciences, Research Triangle Park, NC.
Correspondence to: Clarice R. Weinberg, Ph.D., Biostatistics Branch, P.O. Box 12233, Research Triangle Park, NC 27709.
In this issue of the Journal, a report by Bennett et al.
(1) gives evidence for an interaction in never-smoking
Missouri women between exposure to environmental tobacco smoke (ETS)
and the homozygous null genotype for glutathione S-transferase
(GST) M1 (GSTM1) in increasing the risk of lung cancer. Because GST
enzymes act on certain carcinogenic constituents of tobacco smoke to
make them excretable, the possibility that the null genotype could
confer heightened susceptibility to ETS is plausible. Because
30%-50% of the population carry the null GSTM1 genotype, such an
interaction could be an important contributor to lung cancer among
never smokers. The finding also provides support with a physiologic
rationale for the
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