Медико-генетическое изучение населения Республики Северная Осетия Алания. II. Нозологический спектр наследственной патологии в трех районах

In this article we present the nosological spectrum of monogenic hereditary diseases (MHD) in three districts of the Republic of North Ossetia - Alania (RNOA) - Pravoberezhny, Ardonsky and Kirovsky, with a total population of 119,590 people. The entire population of the districts was examined according to the Protocol of genetic and epidemiological studies (developed by the Federal state budgetary Research Centre for Medical Genetics), 600 patients (from 418 families) with various NBS were identified and diagnosed. We identified 136 nosological forms of MHD - 65 with autosomal dominant type of inheritance (AD), 57 with autosomal recessive (AR) and 14 with X-linked (X-lin.). We determine the prevalence of diseases, frequent and rare nosological forms. The nosological spectrum and prevalence of individual MHD were compared with previously surveyed populations in the European part of Russia: Kirov, Kostroma, Arkhangelsk, Tver, Bryansk, Rostov regions, Krasnodar territory and the Republics of Karachay-Cherkessia, Adygea, Tatarstan, Bashkortostan, Mari El, Udmurtia and Chuvashia. Features of the MHD diversity are revealed. With higher prevalence values than in other populations of the Russian Federation, Ehlers-Danlo syndrome, myotonic dystrophy, non - syndromic mental retardation with various types of inheritance and various forms of retinitis pigmentosa, etc. A number of diseases that are frequent in the Russian Federation have shown on the contrary lower prevalence values - vulgar ichthyosis, neurofibromatosis, hereditary motor-sensory neuropathy and ichthyosiform erythroderemia.