1. Significance of concurrent use of weekly cisplatin in carbon-ion radiotherapy for locally advanced adenocarcinoma of the uterine cervix: A propensity score-matched analysis.
- Author
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Okonogi N, Wakatsuki M, Kato S, Murata H, Kiyohara H, Karasawa K, Ohno T, Tsuji H, Nakano T, and Shozu M
- Subjects
- Adenocarcinoma diagnosis, Adenocarcinoma mortality, Adult, Aged, Chemoradiotherapy adverse effects, Cisplatin adverse effects, Drug Administration Schedule, Female, Follow-Up Studies, Heavy Ion Radiotherapy adverse effects, Humans, Kaplan-Meier Estimate, Middle Aged, Neoplasm Staging, Propensity Score, Retrospective Studies, Survival Rate, Treatment Outcome, Uterine Cervical Neoplasms diagnosis, Uterine Cervical Neoplasms mortality, Adenocarcinoma therapy, Chemoradiotherapy methods, Cisplatin administration & dosage, Heavy Ion Radiotherapy methods, Uterine Cervical Neoplasms therapy
- Abstract
Background: Although carbon-ion radiotherapy (C-ion RT) with concurrent chemotherapy (chemo-C-ion RT) is a promising treatment for adenocarcinoma (AC) of the uterine cervix, its long-term efficacy remains unclear. We evaluated the long-term significance of concurrent weekly cisplatin and C-ion RT for locally advanced AC of the uterine cervix., Methods: We performed a pooled analysis of patients with stage IIB-IVA AC of the uterine cervix who underwent C-ion RT alone or chemo-C-ion RT between September 2007 and December 2018 at our institution. Patients received 74.4 Gy (relative biological effectiveness) with or without cisplatin (40 mg/m
2 per week for up to 5 weeks), underwent no prior pelvic RT or systemic therapy, and had a performance status of 0-2. Propensity score matching was based on the year of diagnosis, regional lymph node metastasis, and stage., Results: The matched cohort contained 26 patients who underwent C-ion RT and 26 who underwent chemo-C-ion RT. The median age and follow-up period were 57 (range, 28-79) years and 34 (range, 2-126) months, respectively. The 5-year overall survival rate was significantly better in the chemo-C-ion RT group (72%) than in the C-ion RT group (46%; P = .041). The 5-year distant metastatic-free rate was also significantly better in the chemo-C-ion RT group (66%) than in the C-ion RT group (41%; P = .048). The incidence of grade ≥ 3 late toxicities was comparable between the two groups., Conclusions: Chemo-C-ion RT for locally advanced AC of the uterine cervix is associated with a long-term survival benefit., (© 2019 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.)- Published
- 2020
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