A Pilot Study Comparing HPV-Positive and HPV-Negative Head and Neck Squamous Cell Carcinomas by Whole Exome

Anthony C Nichols1, Michelle Chan-Seng-Yue, John Yoo

  • 1Department of Otolaryngology-Head and Neck Surgery, Western University, Victoria Hospital, London Health Science Centre, Room B3-431A, 800 Commissioners Road East, London, ON, Canada N6A 5W9 ; London Regional Cancer Program, London, ON, Canada N6A 4L6 ; Lawson Health Research Institute, London, ON, Canada N6C 2R5 ; Department of Oncology, Western University, London, ON, Canada N6A 4L6 ; Department of Pathology, Western University, London, ON, Canada N6A 5C1.

ISRN Oncology
|January 11, 2013
PubMed

Insights

Next-generation sequencing reveals distinct genetic profiles in human papillomavirus- (HPV-)positive and HPV-negative head and neck cancers. This pilot study identified specific gene mutations, highlighting potential new therapeutic targets and biomarkers for HPV-positive HNSCC.

Area of Science:

  • Oncology
  • Genomics
  • Molecular Biology

Background:

  • Next-generation sequencing (NGS) is crucial for identifying therapeutic targets and biomarkers in cancer.
  • Head and neck squamous cell carcinoma (HNSCC) can be classified based on human papillomavirus (HPV) status.
  • Understanding genetic differences between HPV-positive and HPV-negative HNSCC is vital for targeted therapies.

Purpose of the Study:

  • To compare genetic alterations between an HPV-positive tonsillar cancer and an HPV-negative oral tongue cancer using whole-exome sequencing.
  • To identify potential novel therapeutic targets and biomarkers in HPV-positive HNSCC.

Main Methods:

  • DNA extraction from blood and tumor tissue of two patients (one HPV-positive, one HPV-negative).
  • Whole-exome enrichment using the Agilent SureSelect All Exon Kit.
  • Sequencing performed on the ABI SOLiD platform.

Main Results:

  • The HPV-negative tumor exhibited slightly more mutations (73) compared to the HPV-positive tumor (58).
  • Mutations were frequently observed in zinc finger genes (ZNF family) and mucin genes (MUC family).
  • MUC12 gene mutations were present in both HPV-positive and HPV-negative tumors.

Conclusions:

  • HPV-positive HNSCC is genetically distinct from HPV-negative HNSCC, differing in viral presence, p16 status, and mutation frequency.
  • NGS analysis holds significant potential for discovering new therapeutic targets and biomarkers in HNSCC.
  • The findings underscore the importance of HPV status in stratifying HNSCC for personalized treatment approaches.

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