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Next-Generation Sequencing in the Diagnosis of Patients with Bardet-Biedl Syndrome-New Variants and Relationship with Hyperglycemia and Insulin Resistance.
- Source :
-
Genes [Genes (Basel)] 2020 Oct 29; Vol. 11 (11). Date of Electronic Publication: 2020 Oct 29. - Publication Year :
- 2020
-
Abstract
- Bardet-Biedl syndrome (BBS) is a rare autosomal recessively inherited disease with major clinical symptoms such as: obesity, retinal degeneration, polydactyly and renal abnormalities. The aim of the study was to assess the spectrum of gene variants among patients with BBS, identified on the basis of nationwide genetic studies of monogenic diabetes in Polish population. Out of 575 patients enrolled for genetic testing from February 2017 to July 2019, 25 patients with a clinical suspicion of BBS were selected. The identification of pathogenic variants was performed by using targeted next-generation sequencing (NGS) on Illumina NextSeq 550 platform involving the SureSelect assay (Agilent, Santa Clara, CA, USA). BBS was genetically confirmed in 10 of 25 suspected patients. In patients, 14 different variants were found in six genes, mainly in BBS9 and BBS10 gene, including two novel variants. A strong association between hyperglycemia and insulin resistance in patients and the presence of variants in BBS9 gene was observed. Identification of 14 variants, including two new mutations using the NGS method, is the first molecular characteristic of Polish patients with Bardet-Biedl syndrome. It gives hope for earlier proper diagnosis of BBS in future patients selected from children with early childhood obesity and their medical multidisciplinary care.
- Subjects :
- Adolescent
Adult
Base Sequence
Child
Child, Preschool
Female
Genetic Association Studies
Genetic Variation
High-Throughput Nucleotide Sequencing
Humans
Hyperglycemia genetics
Infant
Insulin Resistance genetics
Male
Mutation
Pediatric Obesity genetics
Poland
Sequence Analysis, DNA
Bardet-Biedl Syndrome diagnosis
Bardet-Biedl Syndrome genetics
Chaperonins genetics
Cytoskeletal Proteins genetics
Subjects
Details
- Language :
- English
- ISSN :
- 2073-4425
- Volume :
- 11
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Genes
- Publication Type :
- Academic Journal
- Accession number :
- 33138063
- Full Text :
- https://doi.org/10.3390/genes11111283