medgenМедицинская генетикаMedical Genetics2073-7998Publishing House «Genius Media» LLCmedgen-1813Research ArticleОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯORIGINAL RESEARCHРазнообразие мутаций при поликистозной болезни почек, выявленных методом МПСMutation variability at polycystic kidney disease detected by NGSВассерманН. Н.VassermanN. N.ion10@bk.ruПоляковА. В.PolyakovA. V.noemail@neicon.ruМедико-генетический научный центр имени академика Н.П. БочковаРоссияResearch Centre for Medical GeneticsRussian Federation20200202202119122537Copyright © Вассерман Н.Н., Поляков А.В., 20212021Вассерман 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/1813

Поликистозная болезнь почек (ПП) является клинически и генетически гетерогенной группой заболеваний, может наследоваться как аутосомно-доминантно (АД), так и аутосомно-рецессивно (АР). К развитию АР ПП приводят мутации в гене PKHD1. Большинство мутаций при АД ПП находят в гене PKD1 (80-85%). Примерно в 15% случаев мутации выявляют в гене PKD2. Клиническое и генетическое разнообразие ПП требует поиска мутаций в нескольких генах, поэтому он является трудоемким, дорогостоящим и требует много времени. Метод массового параллельного секвенирования (МПС) позволяет проводить поиск мутаций в нескольких генах одновременно независимо от их размера. Проведен поиск мутаций в 254 семьях с ПП методом МПС с использованием панели, включающей гены PKHD1, PKD1, PKD2, HNF1B и GANAB. Два варианта в гене PKHD1 было идентифицировано в 49 семьях (19%), один вариант найден в 9 случаях (3,5%); в гене PKD1 обнаружено 62 варианта (24,5%), в гене PKD2 - 6 вариантов (2,5%), в гене HNF1B - 9 вариантов (3,5%). В 119 семьях, что составило 47%, мутации найдены не были. У больных из семей с генеалогически установленным АД типом наследования в большинстве случаев (39 из 66; 59%) выявлены варианты в гене PKD1, приводящие к ПП. Из 59 изолированных случаев ПП в 17% (10 человек) идентифицированы 2 варианта в гене PНKD1, в 20% (12 человек) - в гене PKD1. При неизвестном типе наследования (129 случаев) в 29,5% (38 чел.) найдены 2 варианта в гене PНKD1, в 8,5% (11 чел.) - в гене PKD1, в 3% (4 чел.) - в гене PKD2, в 4% (5 чел.) - в гене HNF1B. Таким образом, МПС относительно быстро позволяет проводить молекулярно-генетический анализ одновременно в нескольких генах у больных с признаками ПП.

Polycystic kidney disease is a heterogeneous group of autosomal dominant or autosomal recessive disorders with age of manifestation varying from prenatal period to adulthood. Autosomal recessive polycystic kidney disease is caused by mutations in the PKHD1 gene. Approximately 85% of all autosomal dominant polycystic kidney disease cases are caused by mutations in the PKD1 gene, and around 15% - by mutations in the PKD2 gene. All these genes are large, and mutations were found to be scattered throughout the genes without any clustering. Therefore, mutation detection requires a lot of time, money, and effort. Due to clinical and genetic diversity of polycystic kidney disease, the search for mutations has to be carried out in several genes. Mass parallel sequencing (MPS) allows to analyze several genes simultaneously regardless of their size. 254 families with polycystic kidney disease were examined using mass parallel sequencing with a gene panel that included PKHD1, PKD1, PKD2, HNF1B and GANAB. Two variants in PKHD1 were found in 49 families (19%), one variant - in 9 families (3.5%); in PKD1 62 variants were detected (24.5%), in PKD2 - 6 variants (2.5%), in HNF1B - 9 variants (3.5%). In 119 families (47%) there were no mutations in the target genes. Among 66 patients from families with autosomal dominant polycystic kidney disease, 39 patients (59%) had mutations in the PKD1 gene. Out of 59 sporadic cases, 10 patients (17%) had 2 variants in PНKD1, 12 patients (20%) - in PKD1. 38 patients (29.5%) out of 129 patients with unknown type of inheritance had 2 variants in PНKD1, 11 patients (8.5%) - in PKD1, 4 patients (3%) - in PKD2, 5 patients (4%) - in HNF1B. Mass parallel sequencing allows to carry out relatively rapid molecular genetic analysis of several genes simultaneously for patients with symptoms of polycystic kidney disease.

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