Induction chemotherapy followed by concurrent chemoradiation versus concurrent chemoradiation alone in the definitive management of p16-positive oropharyngeal squamous cell carcinoma with low-neck or N3 disease

Oral Oncology
Onita BhattasaliShawn Iganej

Abstract

The addition of induction chemotherapy (ICT) to concurrent chemoradiation (CCRT) has been investigated as a method of improving outcomes among patients with locally advanced head and neck squamous cell carcinoma. Previous studies have consisted of heterogeneous populations with both p16-positive and p16-negative disease and varying extent of nodal disease burden. We evaluated the role of ICT in p16-positive oropharyngeal squamous cell carcinoma (OPSCC) at high-risk of distant failure. A retrospective review was conducted of 88 consecutive patients with p16-positive OPSCC with low-neck and/or N3 lymphadenopathy. Among these patients, 44 received ICT followed by CCRT, and 44 received CCRT alone with concurrent agents including Cisplatin, Carboplatin, and Cetuximab. Disease control and survival outcomes were reported after adjusting for age, T stage, N stage, and smoking status. Median follow-up for surviving patients was 47 (range: 13-115) months. Patients who received CCRT alone were older than those who received ICT (61 years vs. 56 years; p = 0.02); the groups were otherwise similarly balanced. 3-year distant metastasis: 38% vs. 18% (adjusted hazard ratio (HR) = 0.32 [0.13-0.82]; p = 0.02). 3-year progression-free survival: 49...Continue Reading

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