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Assessment of Response to Different Induction Chemotherapy Regimens in Locally Advanced Nasopharyngeal Carcinoma

Overview
Specialty Pharmacology
Date 2023 Mar 1
PMID 36855516
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Abstract

Purpose: To compare the short-term treatment response and survival of the three induction chemotherapy (IC) regimens, including gemcitabine and cisplatin (GP), docetaxel and cisplatin (TP), and docetaxel, cisplatin, and fluoropyrimidines (TPF) in locally advanced nasopharyngeal carcinoma (LANPC).

Methods: We included stage III-IVA NPC patients who received ≥3 cycles of IC in this study. The chi-square test, multivariate logistic regression analysis, and Kaplan-Meier method were used for statistical analysis.

Results: A total of 227 patients were included. The overall response rate (ORR) of the primary nasopharyngeal tumors after IC with GP, TP, and TPF was 91.9%, 83.8%, and 91.7%, respectively (P=0.729), and the ORR of the cervical lymph nodes was 94.6%, 72.3%, and 85.0%, respectively (P<0.001). For the primary nasopharyngeal tumor, there was no significant difference in the ORR among the three IC regimens. For cervical lymph nodes, patients treated with GP had significantly higher ORR compared to those treated with the TP regimen (P=0.014), and comparable ORR was found between TPF and GP regimens (P=0.161). Similar progression-free survival (PFS) (P=0.501) and overall survival (OS) (P=0.504) were found among three IC regimens. There were comparable PFS (P=0.123) and OS (P=0.478) among those with complete response (CR), partial response (PR), and stable disease (SD)/progressive disease (PD) in the primary nasopharyngeal tumors. However, patients who had CR in the primary nasopharyngeal tumor (P=0.014) and the cervical lymph nodes (P=0.022) had better PFS compared to those who had PR or SD/PD.

Conclusion: GP and TPF regimens are equivalent to the TP regimen in the response to primary nasopharyngeal tumors after IC, but with better ORR in the cervical lymph nodes than the TP regimen. The response to IC may be a powerful indicator for predicting prognosis and developing individualized follow-up and treatment strategies for LANPC patients.

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