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Genetic Instability and Tumorigenesis (Paperback, Softcover reprint of the original 1st ed. 1997)
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Genetic Instability and Tumorigenesis (Paperback, Softcover reprint of the original 1st ed. 1997)
Series: Current Topics in Microbiology and Immunology, 221
Expected to ship within 10 - 15 working days
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M. B. KASTAN Cancer is a disease resulting from alterations of
cellular genes which cause phe notypic changes in somatic cells.
Usually, when we think about genetic diseases, we think about
inheriting one or two abnormal genes from our parents and these
gene abnormalities confer the disease phenotype. In contrast, in
the majority of cancers, no such inherited gene abnormalities can
be identified (which does not mean that they do not exist) and
there is no obvious family history suggesting an inherited disease.
The vast majority of genes which are altered in the cancer cells
are not transmitted through the germ line, but rather become
abnormal in somatic cells sometime during the lifetime of the
individual. Thus, the critical question which arises is "how do
these genetic changes occur in somatic cells?." Epidemiologic data
suggest that exposure to environmental carcinogens con tributes to
the genesis of at least 80% of all human cancers (DOLL and PETO
1981). Thus, it is natural to suspect that the genetic changes in
somatic cells which con tribute to the transformed phenotype arise
from DNA damage caused by such exposures. Therefore, understanding
how cells respond to DNA-damaging agents is likely to be an
important component of our understanding of the genesis of human
tumors."
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