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Fig. 2 | Radiation Oncology

Fig. 2

From: Selection and validation of chemotherapy beneficiaries among elderly nasopharyngeal carcinoma (NPC) patients treated with intensity-modulated radiation therapy (IMRT): a large real-world study

Fig. 2

Kaplan–Meier OS (A), DSS, DMFS and LRRFS (B–D) curves for the poor-prognosis group between IC + CCRT, CCRT, IC + RT and RT alone. Poor-prognosis group = intermediate-risk group + high-risk group (intermediate-risk group: plasma EBV DNA titer ≤ 4000 copies/mL & T3–4; high-risk group: plasma EBV DNA titer > 4000 copies/mL & any T). EBV = Epstein–Barr virus; OS = overall survival; DSS = disease-specific survival; DMFS = distant metastasis-free survival; LRRFS = locoregional recurrence-free survival; CCRT = concurrent chemoradiotherapy; IC = induction chemotherapy; RT = radiotherapy

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