Abstract

1542 Background: Existent genetic tests are not able to provide effective forecasting of all cancer sites and all those methods are generally expensive. At the same time approximately 50% of population has cancer susceptibility and 10% - hereditary cancer syndromes. The purpose of this study was to develop the algorithm of monitoring to provide effective forecasting and prevention of cancer in patients with hereditary cancer susceptibility. Methods: The algorithm of monitoring of patients with family history of cancer includes 2 stage: I - diagnostic, II - treatment and rehabilitation. In the I stage patients with 3 and more relatives by blood who had cancers of any site are revealed by oncologist. Their genealogical trees are analyzed by geneticist. All those patients are registered in the registry of “cancer”-families’ members, interviewed and got all the necessary diagnostic procedures with the following multivariative analysis (of more than 200 geno- and phenotypic characteristics). Patients with determined high risk of malignancies undergo deep clinical and instrumental examination, site-by-site searching for cancer, molecular genetic tests. In the II stage individual recommendations for the patients are developed, pretumour lesions are treated, preventative surgery is performed (resection of a target organ) and the measures for strengthening of anti-tumour resistance are taken. All the patients of the registry get the periodic health examination for term of life: preventive examination once per 6 months, multivariative analysis once per 3 years. Results: The registry of “cancer”-families’ members included 421 families - 1833 patients (232 men and 1601 women at the age of 28–74). In 2003–2006 there were revealed obligatory pre-cancer lesions in 637 patients, cancers in situ - in 45 patients, and cancers of different sites - in 69 patients (in I stage - 78.3%, II stage - 18.9%, III stage - 2.8%, IV stage - 0). Conclusions: This algorithm of monitoring of the patients from the registry of “cancer”-families’ members made it possible to provide high effectiveness of cancer prevention and early detection. No significant financial relationships to disclose.

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