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  • Title: Toxicity and feasibility analysis for cisplatin-based concomitant chemoradiotherapy in locally advanced nasopharyngeal carcinoma.
    Author: Atasoy BM, Dane F, Yumuk PF, Akgün Z, Turhal NS, Abacioğlu U, Sengöz M.
    Journal: J BUON; 2008; 13(1):43-50. PubMed ID: 18404785.
    Abstract:
    PURPOSE: To assess the side effects of cisplatin-based concurrent chemoradiotherapy (CRT) for locally advanced nasopharyngeal carcinoma (NPC). PATIENTS AND METHODS: From 2001 through 2007, 34 (27 males; 7 females) patients received a median of 70 Gy curative radiotherapy (RT) with conventional fractionation. Twenty-one (62%) patients received induction chemotherapy (CT): 8 of them received 2 courses of cisplatin (75 mg/m(2), day 1) and 5-fluorouracil (5-FU) (750 mg/m(2), days 1-5) every 3 weeks and 13 patients received 3 courses of cisplatin (75 mg/m(2), day 1) and docetaxel (75 mg/m(2), day 1) every 3 weeks. Concomitant cisplatin was administered either 40 mg/m(2) weekly (n=8) or 75-80 mg/m(2) every 3 weeks (n=26) during RT. Median Karnofsky performance status (KPS) prior to RT was 80 (range 70-90). Patient, disease and treatment-related factors were analysed in relation to termination of concurrent CT. RESULTS: Concurrent CT was administered to 13 (38.2%) patients without cisplatin termination, whereas 10 (29.4%) patients received 2 cycles of the 3-weekly schedule. Grade 3 oral mucositis (47.1%), grade 2-3 weight loss (44.2%) and grade 2 fatigue (44.1%) were the most frequently dose-limiting side effects during concurrent therapy. The rate of receiving cisplatin cycles as planned was 85% for patients with KPS >80, whilst it was 15% only for patients with KPS < or = 80 (p=0.006). None of the patients suffering of grade 2 fatigue could complete all cycles compared to 68% of patients with < grade 2 fatigue who completed all cycles (p <0.001). The severity of mucositis was significantly related to initial haemoglobin level (p=0.02) and weight loss during RT (p=0.04). Median follow-up was 20 months (range 5-65). Three-year locoregional relapse free (LRRFS), disease free (DFS) and overall survival (OS) rates were 79.3%, 68.8% and 79.2%, respectively. CONCLUSION: Concurrent administration of CT during RT reveals better outcome but requires careful consideration for toxicity. Initial performance status prior to CRT might be a predictor for unplanned CT stopping due to side effects.
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