[Genetic classification of clinical forms of childhood schizophrenia]

In an analysis of 225 families of probands with different forms of the course of children's schizophrenia, a hypothesis on the degree of their genetical similarity (or dissimilarity) was tested. Malignant and slow progredient form of children schizophrenia showed major genetical similarity (correlation coefficient 1.0) with the recurrent schizophrenia occupying a separate position having no common genetical predisposition factors with nuclear forms of schizophrenia. Paroxysmal progredient schizophrenia displayed a distinct genetical relation to any other form (genetical correlation coefficient ranging in 0.5-0.7).