Human papillomavirus DNA strongly correlates with a poorer prognosis in oral cavity carcinoma

Laryngoscope. 2012 Jul;122(7):1558-65. doi: 10.1002/lary.23298. Epub 2012 Apr 24.

Abstract

Objectives/hypothesis: The prevalence of human papillomavirus (HPV) in a clinical series of 162 patients with oral squamous cell carcinoma (OSCC) was studied. Furthermore, we analyzed the correlation between the immunohistochemical expression of p16, p53, epidermal growth factor receptor (EGFR), and HPV status to predict survival in OSCC patients.

Study design: Retrospective study.

Methods: Paraffin-embedded samples from OSCC patients (n = 162) were evaluated for the presence of HPV DNA using both GP5+/GP6+ consensus polymerase chain reaction (PCR) and type-specific E6/E7 PCR to detect HPV types 6, 11, 16, 18, 31, 33, 35, 39, 45, 51, 52, 53, 56, 58, 59, 66, 67, and 68. Immunohistochemical staining for p16, p53, and EGFR was also performed.

Results: The type-specific E6/E7 PCR demonstrated that 65 of the 147 OSCC patients (44%) presented with high-risk (hr) HPV types and that 38 of the 147 OSCC patients (26%) presented with low-risk (lr) HPV types. Comparable p53 and EGFR expression levels were observed in the hr HPV+ group (41.5% p53+, 92% EGFR+) and the lr HPV+ group (57% p53+, 92% EGFR+). Conversely, a slight increase in the proportion of p16+ tumors was observed in the hr HPV+ group (65%) compared with the lr HPV+ group (44%). In regard to patient outcome, the presence of HPV was correlated with a worse prognosis (P = .007).

Conclusions: A high prevalence of hr and lr HPV infections was detected in the OSCC patients included in the study. Moreover, hr HPV positivity was correlated with a decreased 5-year disease-free survival rate compared with HPV- and lr HPV+.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Carcinoma, Squamous Cell / metabolism
  • Carcinoma, Squamous Cell / mortality*
  • Carcinoma, Squamous Cell / virology*
  • Cyclin-Dependent Kinase Inhibitor p16
  • DNA, Viral*
  • ErbB Receptors / biosynthesis
  • Female
  • Humans
  • Male
  • Middle Aged
  • Mouth Neoplasms / metabolism
  • Mouth Neoplasms / mortality*
  • Mouth Neoplasms / virology*
  • Neoplasm Proteins / biosynthesis
  • Papillomaviridae / genetics*
  • Prognosis
  • Retrospective Studies
  • Survival Rate
  • Tumor Suppressor Protein p53 / biosynthesis
  • Young Adult

Substances

  • Cyclin-Dependent Kinase Inhibitor p16
  • DNA, Viral
  • Neoplasm Proteins
  • P16 protein, human
  • Tumor Suppressor Protein p53
  • ErbB Receptors