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Ten-Year Outcomes Of Intensity-Modulated Radiotherapy (IMRT) Combine With Chemotherapy Versus IMRT Alone For Stage II Nasopharyngeal Carcinoma In The Real-World Study (RWD)

Authors Ding XC, Fan PP, Xie P, Fan BJ, Yang J, Jiang LY, Bai XB, Yu JM, Hu M

Received 9 June 2019

Accepted for publication 14 September 2019

Published 10 October 2019 Volume 2019:11 Pages 8893—8903


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Ahmet Emre Eskazan

Xing-Chen Ding,1,2,* Ping-Ping Fan,3,* Peng Xie,2 Bing-Jie Fan,2 Jia Yang,2 Li-Yang Jiang,2 Xin-Bin Bai,1,2 Jin-Ming Yu,2 Man Hu2

1Department of Oncology, School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, People’s Republic of China; 2Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, People’s Republic of China; 3Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China

*These authors contributed equally to this work

Correspondence: Man Hu
Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, People’s Republic of China
Tel +86-531-67626152
Fax +86-531-67626153

Objectives: The aim was to define the role of chemotherapy in stage II nasopharyngeal carcinoma (NPC) and to identify the toxicity of chemotherapy for these patients in the era of intensity-modulated radiotherapy (IMRT).
Methods: Between January 2002 and December 2013, 169 patients with stage II NPC were analyzed. Of these patients, 149 patients treated with chemotherapy were divided into three groups as follows: neoadjuvant chemotherapy followed by IMRT (NCT) group, concurrent chemotherapy with IMRT (CCRT) group, and neoadjuvant chemotherapy followed by CCRT (NC+CCRT) group. In addition, 20 patients received IMRT alone. We retrospectively assessed the 10-year survival and acute adverse effects in the patients using SPSS software.
Results: The median follow-up time was 93 months (2–160 months). The 10-year OS of the NCT, CCRT, NC+CCRT groups vs the IMRT alone group was 69.8%, 63.4%, 69.7% vs 72.4%, respectively (P=0.664, 0.940, and 0.998, respectively). Both univariable and multivariable analyses showed that the addition of chemotherapy to IMRT did not significantly improve the 10-year survival outcomes. The hematotoxicity and mucous reaction of patients with chemotherapy were more serious than those with IMRT alone (P=0.007 and 0.049). Distant metastasis for stage II NPC patients mostly occurred within 3 years, which is very different from patients with advanced NPC.
Conclusion: Patients with stage II NPC who are treated with IMRT may obtain satisfactory long-term survival outcomes. The additional chemotherapy cannot significantly increase survival; however, it may remarkably increase treatment-associated acute toxic reactions.

Keywords: stage II nasopharyngeal carcinoma, NPC, intensity-modulated radiotherapy, IMRT, chemotherapy

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