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J Mol Diagn. 2015 Jan;17(1):31-42. doi: 10.1016/j.jmoldx.2014.09.006. Epub 2014 Oct 24.

Assessment of HaloPlex amplification for sequence capture and massively parallel sequencing of arrhythmogenic right ventricular cardiomyopathy-associated genes.

Author information

1
Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden; Department of Clinical Genetics, County Council of Östergötland, Linköping, Sweden. Electronic address: anna.k.green@lio.se.
2
Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden; Division of Drug Research, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden; Science for Life Laboratory, School of Biotechnology, Division of Gene Technology, Royal Institute of Technology, Stockholm, Sweden.
3
Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden; Department of Clinical Genetics, County Council of Östergötland, Linköping, Sweden.
4
Department of Medicine and Health Science, Linköping University, Linköping, Sweden; Department of Cardiology, County Council of Östergötland, Linköping, Sweden.

Abstract

The genetic basis of arrhythmogenic right ventricular cardiomyopathy (ARVC) is complex. Mutations in genes encoding components of the cardiac desmosomes have been implicated as being causally related to ARVC. Next-generation sequencing allows parallel sequencing and duplication/deletion analysis of many genes simultaneously, which is appropriate for screening of mutations in disorders with heterogeneous genetic backgrounds. We designed and validated a next-generation sequencing test panel for ARVC using HaloPlex. We used SureDesign to prepare a HaloPlex enrichment system for sequencing of DES, DSC2, DSG2, DSP, JUP, PKP2, RYR2, TGFB3, TMEM43, and TTN from patients with ARVC using a MiSeq instrument. Performance characteristics were determined by comparison with Sanger, as the gold standard, and TruSeq Custom Amplicon sequencing of DSC2, DSG2, DSP, JUP, and PKP2. All the samples were successfully sequenced after HaloPlex capture, with >99% of targeted nucleotides covered by >20×. The sequences were of high quality, although one problematic area due to a presumptive context-specific sequencing error-causing motif located in exon 1 of the DSP gene was detected. The mutations found by Sanger sequencing were also found using the HaloPlex technique. Depending on the bioinformatics pipeline, sensitivity varied from 99.3% to 100%, and specificity varied from 99.9% to 100%. Three variant positions found by Sanger and HaloPlex sequencing were missed by TruSeq Custom Amplicon owing to loss of coverage.

PMID:
25445213
DOI:
10.1016/j.jmoldx.2014.09.006
[Indexed for MEDLINE]

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