Identifying haplotypes in recessive inherited retinal dystrophies using whole-genome linked-read sequencing
| Autor: | Tero Kivelä, Pauliina Repo, Pekka Ellonen, Maarjaliis Paavo, Eeva-Marja Sankila, Joni A. Turunen, Reetta-Stiina Järvinen |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Adult Male Genotype Nerve Tissue Proteins 030105 genetics & heredity Carrier testing Biology Genome 03 medical and health sciences Retinitis pigmentosa Retinal Dystrophies Genetics medicine Humans Genetic Testing Eye Proteins Genotyping Genetics (clinical) Genetic testing CRB1 medicine.diagnostic_test Whole Genome Sequencing Genome Human Haplotype High-Throughput Nucleotide Sequencing Membrane Proteins medicine.disease 3. Good health Pedigree 030104 developmental biology Haplotypes Mutation Female Retinitis Pigmentosa |
| Zdroj: | Clinical geneticsREFERENCES. 99(1) |
| ISSN: | 1399-0004 |
| Popis: | Conventional next-generation sequencing methods, used in most gene panels, cannot separate maternally and paternally derived sequence information of distant variants. In recessive diseases, two or more equally plausible causative variants with unsolved phase information prevent accurate molecular diagnosis. In reality, close relatives might be unavailable for segregation analysis. Here, we utilized whole genome linked-read sequencing to assign variants to haplotypes in two patients with inherited retinal dystrophies. Patient 1 with macular dystrophy had variants c.3442T>C, p.(Cys1148Arg), c.4209G>T, p.(Glu1403Asp), and c.1182C>T, p.(Cys394=) in CRB1, and Patient 2 with nonsyndromic retinitis pigmentosa had c.1328T>A, p.(Val443Asp) and c.3032C>G, p.(Ser1011*) in AHI1. The relatives were not available for genotyping. Using whole genome linked-read sequencing we phased the variants to haplotypes providing genetic background for the retinal dystrophies. In future, when the price of sequencing methods that provides long-read data decreases and their read-depth and accuracy increases, they are probably considered the primary or adjunctive sequencing methods in genetic testing, allowing the immediate collection of phase information and thus obviating the need for the carrier testing and segregation analysis. |
| Databáze: | OpenAIRE |
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