Abstract

ObjectiveWe undertook this study to clarify how TPF, TP and PF induction chemotherapy (IC) regimens benefit for nasopharyngeal carcinoma (NPC) patients with different risk of disease progression. Materials and MethodsPatients with newly diagnosed, stage III-IVA NPC were included. A quantitative nomogram was built using the independent prognostic factors identified for disease-free survival (DFS). Patients were stratified into low-risk and high-risk groups by the nomogram. Survival outcomes and toxicities between different IC regimens were compared. ResultsIn total, 1647 (41.0%), 1123 (28.0%) and 1242 (31.0%) patients received TPF, PF and TP regimen, respectively. Consequently, 2253 (56.2%) patients were clarified as low-risk group and the other 1759 (43.8%) as high-risk group. Survival outcomes did not significantly differ between TPF, PF and TP regimens within the low-risk group. However, TPF was associated with significantly improved 3-year DFS (76.2% vs. 67.5% vs. 68.3%), overall survival (88.3% vs. 84.1% vs. 83.9%), distant metastasis-free survival (81.9% vs. 75.0% vs. 77.4%) and locoregional relapse-free survival (92.0% vs. 87.5% vs. 86.9%; all P < 0.05) compared with PF and TP within high-risk group. Multivariate analysis also confirmed these findings. Toxicity analysis showed that TP regimen has the highest percentage of grade 3–5 hematologic toxicities while PF regimen achieved the lowest percentages of overall grade 3–5 adverse events. ConclusionsPatients with high risk should receive TPF for better efficacy and PF may be a better choice for low-risk patients with regard to less grade 3–5 toxicities.

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