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Published in: BMC Cancer 1/2018

Open Access 01-12-2018 | Research article

Deep sequencing of human papillomavirus positive loco-regionally advanced oropharyngeal squamous cell carcinomas reveals novel mutational signature

Authors: Christian Grønhøj, David H. Jensen, Tina Agander, Katalin Kiss, Estrid Høgdall, Lena Specht, Frederik Otzen Bagger, Finn Cilius Nielsen, Christian von Buchwald

Published in: BMC Cancer | Issue 1/2018

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Abstract

Background

The genetic profile for human papilloma virus positive (HPV+) oropharyngeal squamous cell carcinomas (OPSCC) remains largely unknown. The purpose of this study was to sequence tissue material from a large cohort of locoregionally-advanced HPV+ OPSCCs.

Methods

We performed targeted deep sequencing of 395 cancer-associated genes in 114 matched tumor/normal loco-regionally advanced HPV+ OPSCCs. Mutations and copy number aberrations were determined.

Results

We identified a total of 3459 mutations with an average of 10 mutations per megabase and a median of 28 variants per sample. The most frequently mutated genes were KALRN (28%), SPTBN1 (32%), KMT2A (31%), ZNRF3 (9%), BNC2 (12%), NOTCH2 (25%), FGFR2 (12%), SMAD2 (6%), and AR (13%). Our findings were dominated by COSMIC signature 5 and 12, represented in other head and neck cancers and in hepatocellular carcinomas, respectively.

Conclusions

We have identified multiple genetic aberrations in HPV+ OPSCCs, and the COSMIC signature 12 as most prevalent. The mutations harbour both therapeutic and prognostic potential.
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Metadata
Title
Deep sequencing of human papillomavirus positive loco-regionally advanced oropharyngeal squamous cell carcinomas reveals novel mutational signature
Authors
Christian Grønhøj
David H. Jensen
Tina Agander
Katalin Kiss
Estrid Høgdall
Lena Specht
Frederik Otzen Bagger
Finn Cilius Nielsen
Christian von Buchwald
Publication date
01-12-2018
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2018
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-018-4567-3

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