[Current problems of oncogenetics]

Data available in literature on clinical oncogenetics are reviewed. Pretumour and tumor processes with dominant, recessive and multifactorial inheritance are analyzed in particular. A possibility of application of cytogenetic indices to diagnose initial forms of tumour process and determine the level of anaplasia of developed malignant tumours is suggested. The role of Ukrainian oncologists in oncogenetic studies with the view of comprehending the nature of malignancy and expanding diagnostic possibilities in practical oncology is shown.