medgenМедицинская генетикаMedical Genetics2073-7998Publishing House «Genius Media» LLC10.25557/2073-7998.2019.01.3-7medgen-619Research ArticleОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯORIGINAL RESEARCHНовый вариант р.Cys3024Tyr и частые мутации в гене PKHD1, выявленные в семьях с аутосомно-рецессивной поликистозной болезнью почек в Российской ФедерацииNovel variant р.Cys3024Tyr and frequent mutations in the PKHD1 gene in patients with autosomal recessive polycystic kidney disease from Russian FederationВассерманН. Н.VassermanN. N.vasserman@dnalab.ruПоляковА. В.PolyakovA. V.noemail@neicon.ruФГБНУ «Медико-генетический научный центр»РоссияResearch Centre for Medical GeneticRussian Federation20192003201918137Copyright © Вассерман Н.Н., Поляков А.В., 20192019Вассерман Н.Н., Поляков А.В.Vasserman N.N., Polyakov A.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.medgen-journal.ru/jour/article/view/619

Аутосомно-рецессивная поликистозная болезнь почек (АРПП) - форма поликистозной болезни почек с ранним началом. Она явля- ется важной причиной заболеваемости и смертности детей, связанных с изменениями почек и печени. Ген PKHD1 , мутации в кото- ром приводят к развитию заболевания, локализован на хромосоме 6р21.1-р12. С самого протяженного транскрипта, состоящего из 67 экзонов, синтезируется белок полидуктин. Мутации располагаются во всем гене без признаков кластеризации. Поэтому поиск мутаций является трудоемким, дорогостоящим и требует много времени. В гене PKHD1 идентифицирован новый вариант c.9071G>A (р.Cys3024Tyr) в 14 семьях на 16 хромосомах, что составляет 12,7% найденных мутаций. Данный вариант не встретился на 1008 хро- мосомах контрольной выборки. Частыми мутациями в выборке больных с АРПП являются: c.107C>T (р.Thr36Met), встретившаяся у 53% семей с мутациями на 41% хромосом; мутации c.1486C>T (р.Arg496Ter) и c.9524A>G (р.Asn3175Ser) выявлены в 10% семей каждая. Поиск мутаций в гене PKHD1 важен для подтверждения диагноза молекулярно-генетическими методами, а также для проведения медико-генетического консультирования в семьях с последующей пренатальной диагностикой, особенно в семьях, в которых недо- ступен материал больного ребенка.

Autosomal recessive polycystic kidney disease (ARPKD, Polycystic kidney disease 4 with or without hepatic disease, MIM 263200) is a severe genetic disorder with variable clinical spectrum. It is an important cause of renal-related and liver-related morbidity and mortality. ARPKD is caused by mutations in the PKHD1 gene which was mapped to chromosome 6p21-p12. A 67-exon transcript encodes one of the lon- gest continuous open reading frame. Protein polyductin is synthesized from this transcript. Mutations were found to be scattered through- out the gene without evidence of clustering. Searching for mutations is time-consuming and costly. We identified new variant c.9071G>A (р.Cys3024Tyr) in 14 families on 16 chromosomes which makes 12.7% mutations. This variant did not found on 1008 control chromosomes. Mutation c.107C>T (р.Thr36Met) occurs in 53% families with mutation on 41% chromosomes. Mutations c.1486C>T (р.Arg496Ter) and c.9524A>G (р.Asn3175Ser) occur in 10% families each. Mutation analysis in PKHD1 gene is very important for confirming the ARPKD diag- nosis and genetic counseling with following prenatal diagnosis.

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The authors declare that there are no conflicts of interest present.