Human Papillomavirus–Negative Oropharyngeal Cancer Survival Outcomes Based on Primary Treatment: National Cancer Database Analysis

Abstract

Objective To compare survival outcomes between primary surgery and primary radiation therapy (RT) in patients with human papillomavirus (HPV)–negative oropharyngeal squamous cell carcinoma (OPSCC). Study Design A retrospective observational cohort study. Setting National Cancer Database. Methods A National Cancer Database review was conducted of 2635 patients with HPV-negative OPSCC who underwent surgery or RT ± chemotherapy between 2010 and 2014. Univariate analysis was performed on all variables and entered into a multivariate model. The main outcome was overall survival (OS). Results A total of 2635 patients with HPV-negative OPSCC were organized into 4 groups based on cancer staging. In group 1 (T1-2 N0-1; n = 774), up-front surgery had significantly better 5-year OS (76.2%) than RT (56.8%; adjusted hazard ratio [aHR], 1.76; P = .009; 95% CI, 1.15-2.69) and chemoradiation therapy (CRT; 69.5%; aHR, 1.56; P = .019; 95% CI, 1.08-2.26). In group 2 (T3-4 N0-1; n = 327), no significant difference existed between surgery and CRT (5-year OS, 51.3% vs 52.4%; aHR, 0.96; P = .88; 95% CI, 0.54-1.69). In group 3a (T1-2 N2-3; n = 807), surgery with adjuvant treatment showed significantly better 5-year OS than CRT (78.6% vs 68.8%; aHR, 1.51; P = .027; 95% CI, 1.05-2.18). In group 3b (T3-4 N2-3; n = 737), surgery with adjuvant treatment was not statistically associated with better 5-year OS as compared with CRT (61.0% vs 43.7%; aHR, 1.53; P = .06; 95% CI, 0.98-2.39). Conclusion Primary surgery may provide improved survival outcomes in many cases of HPV-negative OPSCCs. These data should be used in weighing treatment options and may serve as a basis to better delineate treatment algorithms for HPV-negative disease.