It has been recognized for almost 200 years that certain families seem
to inherit cancer. It is only in the past decade, however, that
molecular genetics and epidemiology have combined to define the role of
inheritance in cancer more clearly, and to identify some of the genes
involved. The causative genes can be tracked through cancer-prone
families via genetic linkage and positional cloning. Several of the
genes discovered have subsequently been proved to play critical roles in
normal growth and development. There are also implications for the
families themselves in terms of genetic testing with its attendant
dilemmas, if it is not clear that useful action will result.
The chapters in The Genetics of Cancer illustrate what has already
been achieved and take a critical look at the future directions of this
research and its potential clinical applications.