Survival without adjuvant chemotherapy for selected patients with stage II and III nasopharyngeal carcinoma after concurrent chemoradiotherapy alone
2018
BACKGROUND: The role of adjuvant chemotherapy after concurrent chemoradiotherapy (CRT) for nasopharyngeal carcinoma (NPC) is controversial. We report our phase II prospective study of withholding adjuvant chemotherapy in a subgroup of patients with American Joint Committee on Cancer (AJCC) stage II and III NPC with low risk for metastasis. METHODS: Between April 1998 and December 2008, 263 patients with stage II (AJCC 1997 T2aN0, T1-T2aN1; AJCC 2010 T1N1) NPC or stage III (AJCC 1997 T1-T2aN2; AJCC 2010 T1N2) NPC were enrolled. Patients received standard concurrent CRT with cisplatin and 5-fluorouracil (5-FU) but without adjuvant chemotherapy. RESULTS: With a median follow-up of 107 months, the 5-year overall survival (OS), disease-free survival (DFS), and distant metastasis-free survival (DMFS) were 92.4%, 84.4%, and 90.7% for all patients; 94.1%, 85.9%, and 92.9% for patients with stage II NPC; and 90.9%, 83.2%, and 88.9% for patients with stage III NPC, respectively. CONCLUSION: It is safe to withhold adjuvant chemotherapy for selected patients with stage II and III NPC.
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