Abstract
Objective
To compare the long-term oncological outcome of neoadjuvant chemotherapy before radical surgery (NCRS) and definitive chemoradiotherapy (DR) for stage IB2 and IIA2 cervical squamous cell carcinoma.
Methods
The clinical outcome of 480 patients with stage IB2 and IIA2 cervical cancer (308 clinical responders, 111 clinical non-responders, 61 unclear) who underwent NCRS (and subgroup assessments) were compared with those of 233 patients who underwent DR.
Results
The clinical response rate was 73.5% in the NCRS group. Multivariate COX regression analyses revealed that NCRS was not correlated with the 5-year overall survival (OS) rate (p = 0.067) or disease-free survival (DFS) rate (p = 0.249). In a subgroup of NCRS, the clinical response group was also shown to be a protective independent factor of 5 year OS rate compared to the DR group (aHR, 0.403; 95% CI, 0.209–0.777), but had no correlation with the 5 year DFS rate (p = 0.089). On the other hand, the clinical non-response group had no correlation with the 5 year OS rate (p = 0.780) or DFS rate (p = 0.669).
Conclusion
Clinical responders who underwent NCRS exhibited a better oncological outcome compared to those who underwent DR.
International Clinical Trials Registry Platform Search Port, http://apps.who.int/trialsearch/; CHiCTR1800017778.
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Data availability
The data that support the findings of this study are available from the corresponding author, Chunlin Chen, upon reasonable request.
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Acknowledgements
This work was supported by 37 medical institutions in mainland China. We would like to thank the other 31 medical institutions and their affiliated contributors for providing data (Appendix B).
Funding
This study was supported by the National Science and Technology Support Program of China (2014BAI05B03), the National Natural Science Fund of Guangdong (2015A030311024) and the Science and Technology Plan of Guangzhou (158100075).
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CC had the study concepts and designed the work and revised the manuscript. WL, PL, FH, and LS participated the study design and wrote the manuscript. HZ, LW, JG, and YY performed collected and analyses the data and prepare manuscript. XB and JL performed quality control of data and revised the manuscript. All authors reviewed and approved the final version.
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The study was conducted in accordance with the ethical principles of the Helsinki Declaration for research on humans. The study was approved by the Institutional Review Board of Nanfang Hospital Affiliated with Southern Medical University (NFEC-2017-135). Since this study involved previously collected human data, the need for informed consent was waived.
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Li, W., Liu, P., He, F. et al. The long-term outcomes of clinical responders to neoadjuvant chemotherapy followed by radical surgery in locally advanced cervical cancer. J Cancer Res Clin Oncol 149, 4867–4876 (2023). https://doi.org/10.1007/s00432-022-04401-7
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DOI: https://doi.org/10.1007/s00432-022-04401-7