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Platinum-based concurrent chemotherapy remains the optimal regimen for nasopharyngeal carcinoma: a large institutional-based cohort study from an endemic area

  • Original Article – Clinical Oncology
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Abstract

Purpose

To retrospectively investigate the optimal regimen of concurrent chemotherapy for nasopharyngeal carcinoma (NPC) by comparing clinical outcomes of patients who received platinum-based and non-platinum-based concurrent chemoradiotherapy (CCRT) regimens.

Methods

Based on a prospectively maintained database from 1998 to 2013 in an endemic area, a total of 4608 newly diagnosed, biopsy-proven, and non-disseminated NPC patients were identified and allocated into three cohorts based on concurrent chemotherapy regimens: cisplatin-based (CP) chemotherapy cohort, other platinum-based (OP) chemotherapy cohort, and non-platinum-based (NP) chemotherapy cohort. Overall survival (OS) and disease-free survival (DFS) were estimated using the Cox proportional hazards model and propensity score analysis of treatment using an inverse probability weighting model (PSA/IPTW). Finally, sensitivity analysis estimated the effects of potential unmeasured confounders.

Results

The median follow-up time was 68.5 months (range 2–194 months). The multivariate Cox model showed that NP regimens were significantly related with worse survival compared with CP or OP regimens (OS: HR 1.51, 95% CI 1.16–2.00, P = 0.002; HR 1.68, 95% CI 1.24–2.27, P = 0.001; DFS: HR 1.31, 95% CI 1.03–1.66, P = 0.031; HR 1.50, 95% CI 1.14–1.97, P = 0.004, respectively). Meanwhile, no significant survival difference was found between OP and CP regimens. The PSA/IPTW method, CCRT-specific and III–IVB NPC cohort subgroup analysis showed similar results. Sensitivity analysis confirmed the robustness of our results.

Conclusions

Platinum-based concurrent chemotherapy, including both CP and OP regimens, yields better survival benefits for non-metastatic NPC patients than the NP regimen and remains the optimal regimen for these patients.

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Funding

The study was supported by the National Natural Science Foundation of China (Grant nos. 81572665, 81172041, 81472525); the International Cooperation Project of Science and Technology Plan of Guangdong Province (Grant nos. 2014A050503033, 2016A050502011); the Science and Technology Plan Project of Guangdong Province (Grant no. 2013B021800141); and the Foundation of Science and Technology Bureau of Guangzhou City (Grant no. 2014Y2-00179).

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Authors and Affiliations

Authors

Corresponding authors

Correspondence to Xiang Guo, Yanqun Xiang or Weixiong Xia.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. A waiver of informed consent was requested, and approval was obtained from the independent ethics committees at Sun Yat-Sen University Cancer Center.

Availability of data and materials

The authenticity of this article has been validated by uploading the key raw data onto the Research Data Deposit public platform (http://www.researchdata.org.cn), with the approval number as RDDA2017000419.

Electronic supplementary material

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432_2018_2721_MOESM1_ESM.pdf

Kaplan-Meier survival curves for the three groups in stage III-IVB NPC cohort. (A) Overall survival, (B) Disease-free survival. NPC, nasopharyngeal carcinoma; CP group, cisplatin-based chemotherapy group; OP group, other platinum-based chemotherapy group; NP group, non-platinum chemotherapy group; CI, confidence interval; HR, hazard ratio (PDF 386 KB)

432_2018_2721_MOESM2_ESM.pdf

Forest plots for overall survival and disease-free survival with hazard ratios and P value by multivariate Cox proportional hazard model and IPTW/PSA in the III-IVB NPC cohort and in the III-IVB NPC, CCRT-specific cohort. NPC, nasopharyngeal carcinoma; CCRT, concurrent chemoradiotherapy; CP group, cisplatin-based chemotherapy group; OP group, other platinum-based chemotherapy group; NP group, non-platinum chemotherapy group; CI, confidence interval; HR, hazard ratio; IPTW/PSA, propensity score analysis of treatment using inverse probability weighting model (PDF 17 KB)

432_2018_2721_MOESM3_ESM.pdf

Kaplan-Meier survival curves for the three groups in stage III-IVB NPC, CCRT-specific cohort. (A) Overall survival, (B) Disease-free survival. NPC, nasopharyngeal carcinoma; CCRT, concurrent chemoradiotherapy; CP group, cisplatin-based chemotherapy group; OP group, other platinum-based chemotherapy group; NP group, non-platinum chemotherapy group; CI, confidence interval; HR, hazard ratio (PDF 376 KB)

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Yu, Y., Liang, H., Lv, X. et al. Platinum-based concurrent chemotherapy remains the optimal regimen for nasopharyngeal carcinoma: a large institutional-based cohort study from an endemic area. J Cancer Res Clin Oncol 144, 2231–2243 (2018). https://doi.org/10.1007/s00432-018-2721-6

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  • DOI: https://doi.org/10.1007/s00432-018-2721-6

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