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Kaplan-Meier OS (A), DFFS (B) and LRFFS (C) curves for 152 pairs with T4N0-1 NPC stratifies as CCRT plus IC/AC and CCRT alone groups. OS = overall survival; DFFS = distant failure-free survival; LRFFS = locoregional failure-free survival; NPC = nasopharyngeal carcinoma; CCRT = concurrent chemoradiotherapy; IC = induction chemotherapy; AC = adjuvant chemotherapy.
