Experience with combination of cisplatin plus gemcitabine chemotherapy and intensity-modulated radiotherapy for locoregionally advanced nasopharyngeal carcinoma
The purpose of this study was to evaluate the efficacy and toxicity of cisplatin plus gemcitabine chemotherapy and intensity-modulated radiation therapy (IMRT) for locoregionally advanced nasopharyngeal carcinoma (NPC). A total of 54 patients (stage IIB: 6, stage III: 24, stage IVA–B: 24) with locoregionally advanced NPC were treated with cisplatin 25 mg/m2 intravenously on days 1–3, and gemcitabine 1,000 mg/m2 of 30-min intravenous infusion on days 1 and 8, every 3 weeks for two cycles as neoadjuvant chemotherapy. Two cycles of the same regimen were administered as adjuvant chemotherapy 28 days after the end of radiotherapy. The prescription doses were 66–70.4 Gy to the gross tumor volume (GTV), 66 Gy to positive neck nodes, 60 Gy to the high-risk clinical target volume and 54 Gy to the low-risk clinical target volume. The overall response rate to neoadjuvant chemotherapy was 88.6%. Toxicity was mainly grade 1/2 myelosuppression. All patients completed IMRT. The median follow-up duration was 30 months (range, 12–60 months). The 3-year locoregional control, metastasis-free rate and overall survival were 94.9%, 86.2% and 87.7%, respectively. Severe late toxicities included grade 3 trismus in one patient, grade 3 hearing impairment in one patient and cranial nerve XII palsy in one patient. No grade 4 late toxicities were observed. A combination of cisplatin plus gemcitabine chemotherapy and intensity-modulated radiotherapy for locoregionally advanced NPC is well-tolerated, convenient, effective and warrants further studies.