Omar Mahmoud1, Lara Hathout2, Sherif G Shaaban3, Mohamed A Elshaikh4, Sushil Beriwal5, William Small6. 1. Department of Radiation Oncology, Rutgers, the State University of New Jersey, Cancer Institute of New Jersey, New Brunswick, NJ, United States; Department of Radiation Oncology, Rutgers, the State University of New Jersey, New Jersey Medical School, Newark, NJ, United States. Electronic address: omar.mahmoud@rutgers.edu. 2. Department of Radiation Oncology, Rutgers, the State University of New Jersey, Cancer Institute of New Jersey, New Brunswick, NJ, United States. 3. Department of Radiation Oncology, Georgia Cancer Center, Augusta University, Augusta, GA, United States. 4. Department of Radiation Oncology, Henry Ford Hospital, Detroit, MI, United States. 5. Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, PA, United States. 6. Department of Radiation Oncology, Loyola University, Chicago, IL, United States.
Abstract
PURPOSE: The Gynecologic Oncology group (GOG) 0263 trial is currently exploring whether adding chemotherapy to adjuvant radiotherapy improves recurrence-free and/or overall survival in stage IB-IIA cervical cancer patients with pathologic intermediate-risk factors. Using the National Cancer Data Base, we evaluated the benefit of adjuvant chemoradiotherapy over adjuvant radiotherapy alone in the community practice setting. MATERIALS: The analysis included 869 stage IB-IIA cervical cancer patients who underwent radical hysterectomy retrieving intermediate-risk factors justifying adjuvant therapy. Adjuvant chemoradiotherapy and adjuvant radiotherapy were delivered in 440 and 429 patients, respectively. Chi-square test assessed the distribution of variables in each group and the overall survival was estimated using the Kaplan-Meier method. Proportional hazard models were performed to evaluate the impact of the different prognostic factors on survival and propensity score analysis adjusted variables imbalanced distribution. RESULTS: Adding chemotherapy to ART did not show a survival benefit at 48months median follow-up; the 5-year overall survival was 87% and 81% (p=0.6) in the adjuvant chemoradiotherapy and adjuvant radiotherapy groups, respectively. On univariate analysis, age older than 60, a higher comorbidity score, and stage IIA were significantly associated with worse survival, while none of the other covariates were significant prognosticator on multivariate analysis. The same findings held after propensity score analysis. CONCLUSION: Our analysis could not detect a significant survival benefit for adjuvant chemoradiotherapy over adjuvant radiotherapy in women with intermediate-risk factors. Until GOG 0263 results become available, the benefits of adjuvant chemoradiotherapy should be considered on an individual basis within a multidisciplinary approach.
PURPOSE: The Gynecologic Oncology group (GOG) 0263 trial is currently exploring whether adding chemotherapy to adjuvant radiotherapy improves recurrence-free and/or overall survival in stage IB-IIA cervical cancerpatients with pathologic intermediate-risk factors. Using the National Cancer Data Base, we evaluated the benefit of adjuvant chemoradiotherapy over adjuvant radiotherapy alone in the community practice setting. MATERIALS: The analysis included 869 stage IB-IIA cervical cancerpatients who underwent radical hysterectomy retrieving intermediate-risk factors justifying adjuvant therapy. Adjuvant chemoradiotherapy and adjuvant radiotherapy were delivered in 440 and 429 patients, respectively. Chi-square test assessed the distribution of variables in each group and the overall survival was estimated using the Kaplan-Meier method. Proportional hazard models were performed to evaluate the impact of the different prognostic factors on survival and propensity score analysis adjusted variables imbalanced distribution. RESULTS: Adding chemotherapy to ART did not show a survival benefit at 48months median follow-up; the 5-year overall survival was 87% and 81% (p=0.6) in the adjuvant chemoradiotherapy and adjuvant radiotherapy groups, respectively. On univariate analysis, age older than 60, a higher comorbidity score, and stage IIA were significantly associated with worse survival, while none of the other covariates were significant prognosticator on multivariate analysis. The same findings held after propensity score analysis. CONCLUSION: Our analysis could not detect a significant survival benefit for adjuvant chemoradiotherapy over adjuvant radiotherapy in women with intermediate-risk factors. Until GOG 0263 results become available, the benefits of adjuvant chemoradiotherapy should be considered on an individual basis within a multidisciplinary approach.
Authors: Eva Meixner; Line Hoeltgen; Philipp Hoegen; Laila König; Nathalie Arians; Laura L Michel; Katharina Smetanay; Carlo Fremd; Andreas Schneeweiss; Jürgen Debus; Juliane Hörner-Rieber Journal: Technol Cancer Res Treat Date: 2022 Jan-Dec