Effect of Cisplatin Cycles on Prognosis for Locally Advanced Cervical Cancer Patients Treated with Concurrent Chemoradiotherapy: A Long-Term Follow-Up, Large Cohort Study
{"title":"Effect of Cisplatin Cycles on Prognosis for Locally Advanced Cervical Cancer Patients Treated with Concurrent Chemoradiotherapy: A Long-Term Follow-Up, Large Cohort Study","authors":"","doi":"10.1016/j.ijrobp.2024.07.048","DOIUrl":null,"url":null,"abstract":"<div><h3>Purpose/Objective(s)</h3><div>To assess the impact of cisplatin cycles on both overall survival (OS) and disease-free survival (DFS) in locally advanced cervical cancer (LACC) patients undergoing concurrent chemoradiotherapy (CCRT), and to build a nomogram-based prognostic stratification to identify LACC patients who might benefit from ≥ 5 cycles of cisplatin.</div></div><div><h3>Materials/Methods</h3><div>A total of 918 patients with LACC who underwent CCRT at our hospital were retrospectively enrolled. The difference in survival outcomes between the < 5 cycles and ≥ 5 cycles groups were compared using the paired Log-rank test. Subgroup analysis was further conducted to explore the survival differences between the ≥ 5 cycles and < 5 cycles groups in different subpopulations, including age, histology, tumor size, squamous cell carcinoma antigen (SCC Ag), and Federation International of Gynecology and Obstetrics (FIGO) stage. Univariate and multivariate Cox regression analyses were performed in the < 5 cycles group to identify independent risk factors, and a nomogram was developed accordingly. The patients were divided into two risk subgroups according to the total points derived from the nomogram, and the survival outcomes between the < 5 cycles and ≥ 5 cycles groups were compared in each risk strata.</div></div><div><h3>Results</h3><div>The 5-year OS and DFS were 76.7% (95% CI = 74.3–79.9%) and 86.1% (95% CI = 84.6–87.6%) (<em>P</em> = 0.002) and 68.7% (95% CI = 66.1%–71.3%) and 78.3% (95% CI = 76.6%–80.0%) (<em>P</em> = 0.0016) for the < 5 and ≥ 5 cycles groups, respectively. In subgroup analysis, the survival benefit of ≥ 5 cycles could be maintained in patients with squamous disease (<em>P</em> = 0.0031 in OS; <em>P</em> = 0.0019 in DFS), patients with SCC > 1.5 ng/mL (<em>P</em> = 0.0096 in OS; <em>P</em> = 0.019 in DFS), patients with tumor size > 4 cm (<em>P</em> = 0.0036 in OS; <em>P</em> = 0.0011 in DFS), and patients with stage I/II disease (<em>P</em> = 0.0041 in OS; <em>P</em> = 0.014 in DFS). A nomogram incorporating size, SCCAg, and FIGO stage was constructed, and patients were divided into two risk groups (low-risk: total points < 101; high-risk: total points ≥ 101). Receiving ≥ 5 cycles showed superiority in OS (<em>P</em> = 0.0025) and DFS (<em>P</em> = 0.008) over < 5 cycles in the low-risk subgroup; however, this survival benefit could not be maintained in the high-risk subgroup (<em>P</em> = 0.130 in OS; <em>P</em> = 0.093 in DFS).</div></div><div><h3>Conclusion</h3><div>Receiving ≥ 5 cycles of cisplatin improved OS and DFS in LACC patients who received CCRT when compared with < 5 cycles. A nomogram was constructed and the newly defined low-risk patients might gain significant OS and DFS benefit from receiving ≥ 5 cycles.</div></div>","PeriodicalId":14215,"journal":{"name":"International Journal of Radiation Oncology Biology Physics","volume":null,"pages":null},"PeriodicalIF":6.4000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Radiation Oncology Biology Physics","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360301624008101","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ONCOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose/Objective(s)
To assess the impact of cisplatin cycles on both overall survival (OS) and disease-free survival (DFS) in locally advanced cervical cancer (LACC) patients undergoing concurrent chemoradiotherapy (CCRT), and to build a nomogram-based prognostic stratification to identify LACC patients who might benefit from ≥ 5 cycles of cisplatin.
Materials/Methods
A total of 918 patients with LACC who underwent CCRT at our hospital were retrospectively enrolled. The difference in survival outcomes between the < 5 cycles and ≥ 5 cycles groups were compared using the paired Log-rank test. Subgroup analysis was further conducted to explore the survival differences between the ≥ 5 cycles and < 5 cycles groups in different subpopulations, including age, histology, tumor size, squamous cell carcinoma antigen (SCC Ag), and Federation International of Gynecology and Obstetrics (FIGO) stage. Univariate and multivariate Cox regression analyses were performed in the < 5 cycles group to identify independent risk factors, and a nomogram was developed accordingly. The patients were divided into two risk subgroups according to the total points derived from the nomogram, and the survival outcomes between the < 5 cycles and ≥ 5 cycles groups were compared in each risk strata.
Results
The 5-year OS and DFS were 76.7% (95% CI = 74.3–79.9%) and 86.1% (95% CI = 84.6–87.6%) (P = 0.002) and 68.7% (95% CI = 66.1%–71.3%) and 78.3% (95% CI = 76.6%–80.0%) (P = 0.0016) for the < 5 and ≥ 5 cycles groups, respectively. In subgroup analysis, the survival benefit of ≥ 5 cycles could be maintained in patients with squamous disease (P = 0.0031 in OS; P = 0.0019 in DFS), patients with SCC > 1.5 ng/mL (P = 0.0096 in OS; P = 0.019 in DFS), patients with tumor size > 4 cm (P = 0.0036 in OS; P = 0.0011 in DFS), and patients with stage I/II disease (P = 0.0041 in OS; P = 0.014 in DFS). A nomogram incorporating size, SCCAg, and FIGO stage was constructed, and patients were divided into two risk groups (low-risk: total points < 101; high-risk: total points ≥ 101). Receiving ≥ 5 cycles showed superiority in OS (P = 0.0025) and DFS (P = 0.008) over < 5 cycles in the low-risk subgroup; however, this survival benefit could not be maintained in the high-risk subgroup (P = 0.130 in OS; P = 0.093 in DFS).
Conclusion
Receiving ≥ 5 cycles of cisplatin improved OS and DFS in LACC patients who received CCRT when compared with < 5 cycles. A nomogram was constructed and the newly defined low-risk patients might gain significant OS and DFS benefit from receiving ≥ 5 cycles.
期刊介绍:
International Journal of Radiation Oncology • Biology • Physics (IJROBP), known in the field as the Red Journal, publishes original laboratory and clinical investigations related to radiation oncology, radiation biology, medical physics, and both education and health policy as it relates to the field.
This journal has a particular interest in original contributions of the following types: prospective clinical trials, outcomes research, and large database interrogation. In addition, it seeks reports of high-impact innovations in single or combined modality treatment, tumor sensitization, normal tissue protection (including both precision avoidance and pharmacologic means), brachytherapy, particle irradiation, and cancer imaging. Technical advances related to dosimetry and conformal radiation treatment planning are of interest, as are basic science studies investigating tumor physiology and the molecular biology underlying cancer and normal tissue radiation response.