[Genetic epidemiology in oncology].

Genetic Epidemiology is a discipline which studies the incidence of diseases among the population, trying to quantify at the same time the individual risk of developing them. In Oncology, it is based on the analysis of the patients genealogies and on the study of the polymorphisms in their DNA with specific markers. Its operation requires a laboratory duly equipped with the techniques of Molecular Biology, a section responsible of data collection regarding patients and relatives and another area for the computer processing of data and results. Its funding shall be through public agencies, but the private companies related with this field must be aware of the need to participate in these projects.