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ISSN 1338-4317 (online)

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neo_2020_190918N925

Title: Evaluation of an amplicon-based custom gene panel for the diagnosis of hereditary tumors
Author: S. SHINRIKI, M. MAESHIRO, K. SHIMAMURA, J. KAWASHIMA, E. ARAKI, M. IBUSUKI, Y. YAMAMOTO, H. IWASE, Y. MIYAMOTO, H. BABA, M. YAMAGUCHI, H. MATSUI

Abstract: Genetic testing based on next-generation sequencing (NGS) analysis has recently been used to diagnose hereditary diseases. In this study, we explored the usefulness of our custom amplicon panel that targeted 23 genes related to hereditary tumors given in the American College of Medical Genetics and Genomics recommendations. We applied our custom NGS panel to samples from 12 patients previously diagnosed by Sanger sequencing as having the diseases or diagnosed clinically by meeting the diagnostic criteria in this study. Our gene panel not only successfully identified all variants detected by Sanger sequencing but also identified previously unrecognized variants that resulted in confirmation of the disease, or even in the revision of the diagnosis. For instance, a patient identified with an SDHD gene mutation actually had von Hippel-Lindau (VHL) syndrome, as determined by the presence of a pathogenic VHL gene variant. We also identified false-positive results that were generated by amplification of genome regions that are not intended to be investigated. In conclusion, NGS-based amplicon sequencing is a highly effective method to detect germline variants, as long as they are also carefully evaluated by manual inspection.

Keywords: Hereditary tumors, Gene panel testing, Amplicon sequencing, Next-generation sequencer, Germline variants
Published online: 01-Apr-2020
Year: , Volume: , Issue: Page From: , Page To:
doi:10.4149/neo_2020_190918N925


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