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"Thanks to new Multiplicom test kits physicians are able to identify all the genetic mutations of a condition at once, and use this information to initiate the right - personalized - treatment.”

Targeted Next-Generation Sequencing of 51 Genes Involved in Primary Electrical Disease

Primary electrical disease (PED) is characterized by cardiac arrhythmias, which can lead to sudden cardiac death in the absence of detectable structural heart disease. PED encompasses a diversity of inherited syndromes, predominantly Brugada syndrome, early repolarization syndrome, long QT syndrome, short QT syndrome, arrhythmogenic right ventricular cardiomyopathy, and catecholaminergic polymorphic ventricular tachycardia. To overcome the diagnostic challenges imposed by the clinical and genetic heterogeneity of PED, we developed a targeted gene panel for next-generation sequencing of 51 PED genes. The amplified samples were sequenced on MiSeq. To validate the panel, 20 CEPH samples and 19 positive control samples were used, with a total of 1479 variants. An analytical sensitivity and specificity of 100% and 99.9% were obtained. After validation, we applied the assay to 114 PED patients. We identified 107 variants in 36 different genes, 18 of which were classified as pathogenic or likely pathogenic, 54 variants were of unknown significance, and 35 were classified as likely benign. We can conclude that the PED Multiplex Amplification of Specific Targets for Resequencing Plus assay is a proficient and highly reliable test to routinely screen patients experiencing primary arrhythmias.

 

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authors: 

Dorien Proost, Johan Saenen, Geert Vandeweyer, Annelies Rotthier, Maaike Alaerts, Emeline M. Van Craenenbroeck, Joachim Van Crombruggen, Geert Mortier, Wim Wuyts, Christiaan Vrints, Jurgen Del Favero, Bart Loeys, Lut Van Laer