Effect of Recombinant Adenovirus-p53 Combined With Radiotherapy on Long-Term Prognosis of Advanced Nasopharyngeal Carcinoma

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Abstract
Purpose To centrally assess the safety, efficacy, and 6-year follow-up of recombinant adenovirus-p53 (rAd-p53) combined with radiotherapy (RT) for patients with nasopharyngeal carcinoma (NPC). Patients and Methods A randomized controlled clinical study on rAd-p53 combined with RT in 42 patients with NPC was compared with a control group of 40 patients with NPC treated with RT alone. In the group receiving rAd-p53 combined with RT, rAd-p53 was intratumorally injected once a week for 8 weeks. Concurrent RT (70 Gy in 35 fractions) was given to the nasopharyngeal tumor and neck lymph node. Patients and tumors were monitored for adverse events and responses. Results rAd-p53–specific p53 mRNA was detected in postinjection of rAd-p53 biopsies from 16 (94.1%) of 17 patients. Upregulation of p21/WAF1 and Bax and downregulation of vascular endothelial growth factor were observed in postinjection tumor biopsy. Complete response rate in the group receiving rAd-p53 combined with RT was observed at 2.73 times that of t...

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