Abstract

BackgroundThe optimal definitive chemotherapy regimen during concurrent chemoradiotherapy (CRT) for patients with advanced esophageal squamous cell carcinoma (ESCC) remains unclear because of conflicting evidence. This study aimed to compare the effectiveness of taxane‐based chemotherapy with that of conventional cisplatin plus 5‐fluorouracil (PF) as the chemotherapy regimen in definitive CRT for ESCC.Patients and MethodsThis retrospective study included patients with ESCC who received paclitaxel plus carboplatin (PC) or PF during definitive CRT between May 2012 and February 2015 in a medical center in Taiwan. Survival outcomes were compared after adjustment for risk factors.ResultsOverall, 229 patients were evaluated. Patients in the PC group had an objective response rate of 71.1% compared with the 51.4% of the PF group (p = 0.016). The PC group showed a significantly longer progression‐free survival (PFS, p = 0.002) and overall survival (OS, p = 0.019) than the PF group. Salvage surgery also helped prolong both the PFS and OS (p < 0001). Sex (male vs. female, HR, 1.831; 95% CI, 1.016–3.303), clinical stage (HR, 1.282; 95% CI, 1.069–1.537), accumulative radiation dose (≥41.4 Gy vs. <41.4 Gy; HR, 0.640; 95% CI, 0.413–0.993), salvage surgery (yes vs. no, HR: 0.412, 95% CI: 0.298–0.570), and regimen (PF vs. PC; HR, 1.514; 95% CI, 1.109–2.067) were independent prognostic factors for cancer mortality.ConclusionCompared with the PF regimen, the PC regimen for definitive CRT yielded significantly increased response rates and longer survival times; therefore, the PC regimen may be preferable for chemotherapy for definitive CRT in patients with advanced ESCC.

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