A targeted next-generation sequencing assay for the molecular diagnosis of genetic disorders with orodental involvement
نویسندگان
چکیده
BACKGROUND Orodental diseases include several clinically and genetically heterogeneous disorders that can present in isolation or as part of a genetic syndrome. Due to the vast number of genes implicated in these disorders, establishing a molecular diagnosis can be challenging. We aimed to develop a targeted next-generation sequencing (NGS) assay to diagnose mutations and potentially identify novel genes mutated in this group of disorders. METHODS We designed an NGS gene panel that targets 585 known and candidate genes in orodental disease. We screened a cohort of 101 unrelated patients without a molecular diagnosis referred to the Reference Centre for Oro-Dental Manifestations of Rare Diseases, Strasbourg, France, for a variety of orodental disorders including isolated and syndromic amelogenesis imperfecta (AI), isolated and syndromic selective tooth agenesis (STHAG), isolated and syndromic dentinogenesis imperfecta, isolated dentin dysplasia, otodental dysplasia and primary failure of tooth eruption. RESULTS We discovered 21 novel pathogenic variants and identified the causative mutation in 39 unrelated patients in known genes (overall diagnostic rate: 39%). Among the largest subcohorts of patients with isolated AI (50 unrelated patients) and isolated STHAG (21 unrelated patients), we had a definitive diagnosis in 14 (27%) and 15 cases (71%), respectively. Surprisingly, COL17A1 mutations accounted for the majority of autosomal-dominant AI cases. CONCLUSIONS We have developed a novel targeted NGS assay for the efficient molecular diagnosis of a wide variety of orodental diseases. Furthermore, our panel will contribute to better understanding the contribution of these genes to orodental disease. TRIAL REGISTRATION NUMBERS NCT01746121 and NCT02397824.
منابع مشابه
Identification of a Novel Intragenic Deletion of the PHKD1 Gene in a Patient with Autosomal Recessive Polycystic Kidney Disease
Background Autosomal recessive polycystic kidney disease (ARPKD) is caused by mutations in the PKHD1gene. In the present study, we describe a severe case of ARPKD carrying a point mutation and a novel four-exon deletion of PKHD1 gene. Materials and Methods The PKHD1, PKD1 and PKD2 ...
متن کاملStrategies and Clinical Applications of Next Generation Sequencing
Abstract DNA sequencing is one of the great valuable techniques in molecular biology, which can be used to detect the sequence of nucleotides in a DNA fragment. The high-throughput sequencing known as Next Generation Sequencing (NGS) revolutionized genomic research and molecular biology; therefore, the whole human genome can be sequenced with a low cost in several days. NGS technology is simi...
متن کاملStrategies and Clinical Applications of Next Generation Sequencing
Abstract DNA sequencing is one of the great valuable techniques in molecular biology, which can be used to detect the sequence of nucleotides in a DNA fragment. The high-throughput sequencing known as Next Generation Sequencing (NGS) revolutionized genomic research and molecular biology; therefore, the whole human genome can be sequenced with a low cost in several days. NGS technology is simi...
متن کاملتوالی یابی نسل جدید (NGS) روشی برای شناسایی جهش های ژنتیکی مرتبط با اختلال اسپینابیفیدا
Background and Objective: Spina Bifida (SB) is a congenital malformation and is a result of the failure of the closure and failure of the neural tube. The causes and mechanisms of genetic involvement involved in the onset of SB are still ambiguous. The present study addresses the genetic variation in SB disease using Next Generation Sequencing (NGS) as a powerful molecular tool for comprehensiv...
متن کاملA pathogenic variant in the transforming growth factor beta I (TGFBI) in four Iranian extended families segregating granular corneal dystrophy type II: A literature review
Objective(s): Granular and lattice corneal dystrophies (GCDs & LCDs) are autosomal dominant inherited disorders of the cornea. Due to genetic heterogeneity and large genes, unraveling the mutation is challenging.Materials and Methods: Patients underwent comprehensive clinical examination, and targeted next-generation sequencing (NGS) was...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 53 شماره
صفحات -
تاریخ انتشار 2016