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Background  Little is known about the prognostic difference of anti-EGFR therapy, cetuximab (CTX) or nimotuzumab (NTZ), concurrently with induction chemotherapy (IC, investigational arm) or RT (control arm) for patients with locoregionally advanced nasopharyngeal carcinoma (LA-NPC). We conducted this retrospective study to address this.    Methods  We identified 296 patients with newly diagnosed LA-NPC at Sun Yat-Sen University Cancer Center between January 2012 and May 2015. Patients were treated by IC with CCRT or RT and CTX/NTZ was delivered during IC or radiotherapy. Survival outcomes and toxicities between different arms were compared.    Results  In total, there were 149 patients in the investigational arm and 147 in control arm. The 3-year disease-free survival, overall survival, distant metastasis-free survival and locoregional relapse-free survival rates for investigational arm vs. control arm were 84.3% vs. 74.3% ( P  = 0.027), 94.0% vs. 92.1% ( P  = 0.673), 88.0% vs. 81.8% ( P  = 0.147) and 93.3% vs. 88.0% ( P  = 0.093). Multivariate analysis revealed patients in the control arm achieved significantly worse disease-free survival (HR, 1.497; 95% CI, 1.016–2.206;  P  = 0.026) compared with those in the investigational arm; however, no significant difference was identified for other endpoints. Patients in the investigational arm experienced more grade 3–4 skin reaction (15.4% vs. 2.0%,  P  <  0.001) and mucositis (10.1% vs. 3.4%,  P  = 0.022) during induction phase, but less skin reaction (5.4% vs. 25.9%,  P  <  0.001) and mucositis (24.8% vs. 36.7%,  P  = 0.026) during RT.    Conclusions  Our findings suggested that CTX/NTZ concurrently with IC may be a more effective and promising strategy for patients with LA-NPC receiving intensity-modulated radiotherapy.    Electronic supplementary material  The online version of this article (10.1186/s12885-018-4268-y) contains supplementary material, which is available to authorized users.

bmc cancer

Anti-EGFR targeted therapy delivered before versus during radiotherapy in locoregionally advanced nasopharyngeal carcinoma: a big-data, intelligence platform-based analysis