Abstract
Objectives The standard concurrent radiotherapy and chemotherapy regimens for patients with oropharyngeal cancer are highly toxic. Human papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC) has recently emerged as a distinct biological and clinical entity with improved response to treatment and prognosis. A tailored therapeutic approach is needed to optimize patient care. The aim of our study was to investigate the impact of HPV and smoking status on early toxicities (primarily mucositis) associated with concurrent chemotherapy and radiotherapy in patients with OPSCC. Materials and methods We retrospectively evaluated 72 consecutive patients with OPSCC and known HPV status treated with concurrent radiotherapy and chemotherapy at our institution. Treatment-related toxicities were stratified by smoking and HPV status and compared using univariate and multivariate logistic regression. Results HPV-positive patients had a 6.86-fold increase in the risk of having severe, grade 3-4 mucositis. This effect was preserved after adjusting for patient smoking status, nodal stage, radiotherapy technique and radiotherapy maximum dose. Additionally, HPV status had significant effect on the objective weight loss during treatment and at three months after treatment. Consistently, non-smokers had a significant 2.70-fold increase in the risk of developing severe mucositis. Conclusion Risk factors for OPSCC modify the incidence of treatment-related early toxicities, with HPV-positive and non-smoking status correlating with increased risk of high grade mucositis and associated outcomes. Retrospective single-institution studies need to be interpreted cautiously. However, this finding is important to consider when designing therapeutic strategies for HPV-positive patients and merits further investigation in prospective clinical trials.
Original language | English (US) |
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Pages (from-to) | 869-876 |
Number of pages | 8 |
Journal | Oral Oncology |
Volume | 50 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2014 |
Funding
The authors also thank Megan J. Whelen, MPH (supported by the Comprehensive Cancer Center of Wake Forest University) for copyediting, editorial and production assistance and Karen Potvin Klein, MA, ELS (supported by the Biomedical Research Services Administration, Wake Forest School of Medicine) for copyediting and editorial assistance; Susan Butler, PhD (Department of Otolaryngology, Wake Forest School of Medicine) for her contribution to the study concepts and manuscript review; and Amy Franklin, PA-C (Section on Hematology and Oncology, Wake Forest School of Medicine) for her contribution to data collection and manuscript review. The authors also thank the Department of Pathology of Wake Forest School of Medicine for financial support, the Wake Forest School of Medicine Molecular Diagnostics Lab for performing the IHC and ISH, and Access Genetics for interpretation of the HPV genotyping. This work was supported in part by the Wake Forest Translational Science Institute KL2 Research Scholar program. Biostatistical services were provided by the Comprehensive Cancer Center of Wake Forest University NCI CCSG P30CA012197 grant.
Keywords
- Chemotherapy
- Human papillomavirus
- Oral mucositis
- Radiotherapy
- Smoking
- Squamous cell of head and neck
ASJC Scopus subject areas
- Oral Surgery
- Oncology
- Cancer Research