Eric Adjei Boakye1,2, Paula Buchanan3, Leslie Hinyard3, Katie Stamatakis4, Nosayaba Osazuwa-Peters4,5,6, Matthew C Simpson6, Mario Schootman4, Jay F Piccirillo7. 1. Department of Population Science and Policy, Southern Illinois University School of Medicine, Springfield, Illinois. 2. Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, Illinois. 3. Saint Louis University Center for Health Outcomes Research, St. Louis, Missouri. 4. Department of Epidemiology and Biostatistics, Saint Louis University College for Public Health and Social Justice, St. Louis, Missouri. 5. Saint Louis University Cancer Center, St. Louis, Missouri. 6. Department of Otolaryngology-Head and Neck Surgery, Saint Louis University School of Medicine, St. Louis, Missouri. 7. Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St. Louis, Missouri.
Abstract
OBJECTIVES/HYPOTHESIS: To 1) examine the characteristics of patients who develop second primary malignancies (SPMs) from an index human papillomavirus (HPV)-related head and neck squamous cell carcinoma (HNSCC) and HPV-unrelated HNSCC and to 2) compare overall survival between those with HPV-related and HPV-unrelated index HNSCC among patients who develop SPM. STUDY DESIGN: Retrospective cohort analysis. METHODS: A retrospective study was conducted of 113,259 patients who were diagnosed with HNSCC from 2000 to 2014. SPM was defined as the first subsequent primary cancer occurring at least 2 months after index cancer diagnosis, and HPV-relatedness was based on whether patients' index HNSCC was potentially HPV-related or HPV-unrelated. Multivariable Fine and Gray (FG) competing-risks regression models were used to estimate factors associated with risk of SPM by HPV-relatedness. Among patients with SPM, an adjusted Cox proportional hazards (PH) regression model was used to assess the association between HPV-relatedness and survival. RESULTS: Approximately 13,900 patients (12.3%) developed SPM. In the FG model, patients with HPV-unrelated HNSCC had a 15% higher risk of developing SPM (adjusted hazard ratio: 1.15, 95% confidence interval: 1.10-1.20) than those with potentially HPV-related HNSCC, but the same characteristics were associated with SPM development. In the Cox PH model, patients with SPM whose index HNSCC was HPV-unrelated had higher risk of death than those whose index HNSCC was potentially HPV-related (adjusted hazard ratio: 1.06; 95% confidence interval: 1.02-1.11). CONCLUSIONS: Patients with HPV-unrelated HNSCC have a higher risk of SPM development than do those with HPV-related HNSCC. Effective secondary disease-prevention strategies should be established to improve long-term patient outcomes. LEVEL OF EVIDENCE: NA Laryngoscope, 129:1828-1835, 2019.
OBJECTIVES/HYPOTHESIS: To 1) examine the characteristics of patients who develop second primary malignancies (SPMs) from an index human papillomavirus (HPV)-related head and neck squamous cell carcinoma (HNSCC) and HPV-unrelated HNSCC and to 2) compare overall survival between those with HPV-related and HPV-unrelated index HNSCC among patients who develop SPM. STUDY DESIGN: Retrospective cohort analysis. METHODS: A retrospective study was conducted of 113,259 patients who were diagnosed with HNSCC from 2000 to 2014. SPM was defined as the first subsequent primary cancer occurring at least 2 months after index cancer diagnosis, and HPV-relatedness was based on whether patients' index HNSCC was potentially HPV-related or HPV-unrelated. Multivariable Fine and Gray (FG) competing-risks regression models were used to estimate factors associated with risk of SPM by HPV-relatedness. Among patients with SPM, an adjusted Cox proportional hazards (PH) regression model was used to assess the association between HPV-relatedness and survival. RESULTS: Approximately 13,900 patients (12.3%) developed SPM. In the FG model, patients with HPV-unrelated HNSCC had a 15% higher risk of developing SPM (adjusted hazard ratio: 1.15, 95% confidence interval: 1.10-1.20) than those with potentially HPV-related HNSCC, but the same characteristics were associated with SPM development. In the Cox PH model, patients with SPM whose index HNSCC was HPV-unrelated had higher risk of death than those whose index HNSCC was potentially HPV-related (adjusted hazard ratio: 1.06; 95% confidence interval: 1.02-1.11). CONCLUSIONS:Patients with HPV-unrelated HNSCC have a higher risk of SPM development than do those with HPV-related HNSCC. Effective secondary disease-prevention strategies should be established to improve long-term patient outcomes. LEVEL OF EVIDENCE: NA Laryngoscope, 129:1828-1835, 2019.
Keywords:
Epidemiology; Head and neck squamous cell carcinoma; Surveillance; and End Results (SEER); human papillomavirus; risk factor; second primary malignancy; survival
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