Ali Elsayed M, Abdelraheem Ahmad G
Clinical Oncology department, Sohag University, Sohag, Egypt.
Head Neck Oncol. 2011 Nov 15;3:48. doi: 10.1186/1758-3284-3-48.
Concurrent chemoradiation is the standard treatment for patients with advanced head and neck squamous cell carcinoma (HNSCC).The present study was carried out to assess the feasibility and efficacy of low-dose gemcitabine as a radiosensitizer when used during radical therapeutic management of patients with locally advanced HNSCC.
Fifty-two patients with locally advanced HNSCC (stage III, 50%; stage IVa, 50%) were enrolled during the period from July 2008 to December 2010. All received a course of radiotherapy (70 Gy over 7 weeks) concurrent with weekly infusions of gemcitabine at 50 mg/m(2).
All patients were available for toxicity and response. Severe mucositis (grade 3-4) was observed in 76% of patients. Severe hematological toxicity was uncommon. Xerostomia was the most common late toxicity in 34 patients (65.4%). The rate of complete and partial response rate was 67.3% and 21.1%, respectively, with an overall response rate of 88.45%. Two years progression-free survival and disease-free survival were 46% and 38.46%, respectively.
Using low-dose gemcitabine concurrent with radiotherapy maintains high response rate with low systemic toxicity, in spite of severe mucositis in a high percentage of patients.
同步放化疗是晚期头颈部鳞状细胞癌(HNSCC)患者的标准治疗方法。本研究旨在评估低剂量吉西他滨在局部晚期HNSCC患者根治性治疗中作为放射增敏剂的可行性和疗效。
2008年7月至2010年12月期间纳入52例局部晚期HNSCC患者(Ⅲ期占50%,Ⅳa期占50%)。所有患者均接受一个疗程的放疗(7周内70 Gy),同时每周静脉输注50 mg/m²吉西他滨。
所有患者均可供评估毒性和反应。76%的患者出现严重黏膜炎(3 - 4级)。严重血液学毒性并不常见。口干是34例患者(65.4%)最常见的晚期毒性反应。完全缓解率和部分缓解率分别为67.3%和21.1%,总缓解率为88.45%。两年无进展生存率和无病生存率分别为46%和38.46%。
尽管高比例患者出现严重黏膜炎,但低剂量吉西他滨与放疗同步使用可维持高缓解率且全身毒性低。