Abstract
Purpose
The survival benefits of neoadjuvant chemotherapy (NAC) compared with those of concurrent chemoradiotherapy (CRT) for locally advanced cervical cancer (LACC) patients remain uncertain. Meta-analysis was used to compare NAC and CRT.
Methods
A systematic search was performed up to 9 September 2020. Survival outcomes were analyzed based on event frequency or hazard ratios (HRs). Multilevel mixed-effects logistic regression was applied to analyze the effect of regimen variables on survival outcomes.
Results
Analysis based on Cox regression showed that CRT was better than NAC + radical hysterectomy (RT) (HR 1.25; 95% confidence interval (CI)) 1.02–1.54; p = 0.034) in terms of overall survival (OS). According to multilevel mixed-effects model analysis comparing NAC + RT and CRT, LACC patients who used cisplatin instead of carboplatin had a better Progression-free survival (PFS) (odds ratio (OR) 1.54; 95% CI 1.08–2.20; p = 0.016). When NAC + CRT and CRT were compared, gemcitabine administration was associated with a decrease in PFS (OR 0.47; 95% CI 0.22–0.99; p = 0.047). Increased doses of cisplatin and paclitaxel were associated with survival improvement.
Conclusion
Based on traditional meta-analysis, CRT was better than NAC + RT in terms of OS. Carboplatin instead of cisplatin as part of the NAC + RT strategy or gemcitabine use in NAC + CRT may not be a good choice. An increased total dosage of paclitaxel and/or cisplatin as part of NAC + CRT and CRT strategies may improve the survival outcome of LACC patients.
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Baogang Wang: project development, data collection, and manuscript writing; Yuying Tan: data collection and data analysis. Xiaolin Yang: data analysis. Xiaxia Man: project development and manuscript editing.
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Supplementary Figure 1. Network comparisons of the strategies included in the analyses. a: PFS based on event frequency; b: OS based on event frequency; c: PFS based on HR; d: OS based on HR. Supplementary Table 1. The network league table for PFS results based on event frequency (OR and its 95%CI).Supplementary Table 2. The network league table for OS results based on event frequency (OR and its 95%CI).Supplementary Table 3. The network league table for PFS results based on the Cox regression results (HR and its 95%CI).Supplementary Table 4. The network league table for OS results based on the Cox regression results (HR and its 95%CI).
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Wang, B., Tan, Y., Yang, X. et al. Survival outcomes of neoadjuvant chemotherapy-related strategies compared with concurrent chemoradiotherapy for locally advanced cervical cancer: a meta-analysis of randomized controlled trials. Arch Gynecol Obstet 304, 485–493 (2021). https://doi.org/10.1007/s00404-020-05916-5
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DOI: https://doi.org/10.1007/s00404-020-05916-5