Takuma Nomiya1, Hiroshi Tsuji2, Hidemasa Kawamura3, Tatsuya Ohno3, Shingo Toyama4, Yoshiyuki Shioyama4, Yuko Nakayama5, Kenji Nemoto6, Hirohiko Tsujii2, Tadashi Kamada2. 1. Department of Radiation Oncology, Kanagawa Cancer Center, Japan. Electronic address: tnomiya@kcch.jp. 2. National Institute of Radiological Sciences, Chiba, Japan. 3. Gunma University Heavy Ion Medical Center, Japan. 4. Ion Beam Therapy Center, SAGA-HIMAT Foundation, Japan. 5. Department of Radiation Oncology, Kanagawa Cancer Center, Japan. 6. Department of Radiation Oncology, Yamagata University Hospital, Japan.
Abstract
BACKGROUND AND PURPOSE: A multi-institutional observational study (J-CROS1501PR) has been carried out to analyze outcomes of carbon-ion radiotherapy (CIRT) for patients with prostate cancer. PATIENTS AND METHODS: Data of the patients enrolled in prospective studies of following 3 CIRT institutions were analyzed: National Institute of Radiological Sciences (NIRS; Chiba, Japan), Gunma University Heavy Ion Medical Center (GHMC; Gunma, Japan), and Ion Beam Therapy Center, SAGA HIMAT Foundation (HIMAT; Saga, Japan). Endpoints of the clinical trial are biochemical recurrence-free survival (bRFS), overall survival (OS), cause-specific survival (CSS), local control rate (LCR), and acute/late adverse effects. RESULTS: A total of 2157 patients' data were collected from NIRS (n=1432), GHMC (n=515), and HIMAT (n=210). The number of patients in low-risk, intermediate-risk, and high-risk groups was 263 (12%), 679 (31%), and 1215 (56%), respectively. The five-year bRFS in low-risk, intermediate-risk, and high-risk patients was 92%, 89%, and 92%, respectively. The five-year CSS in low-risk, intermediate-risk, and high-risk patients was 100%, 100%, and 99%, respectively. The incidence of grade 2 late GU/GI toxicities was 4.6% and 0.4%, respectively, and the incidence of ⩾G3 toxicities were 0%. CONCLUSIONS: Favorable overall outcomes of CIRT for prostate cancer were suggested by the analysis of the first multi-institutional data. Copyright Â
BACKGROUND AND PURPOSE: A multi-institutional observational study (J-CROS1501PR) has been carried out to analyze outcomes of carbon-ion radiotherapy (CIRT) for patients with prostate cancer. PATIENTS AND METHODS: Data of the patients enrolled in prospective studies of following 3 CIRT institutions were analyzed: National Institute of Radiological Sciences (NIRS; Chiba, Japan), Gunma University Heavy Ion Medical Center (GHMC; Gunma, Japan), and Ion Beam Therapy Center, SAGA HIMAT Foundation (HIMAT; Saga, Japan). Endpoints of the clinical trial are biochemical recurrence-free survival (bRFS), overall survival (OS), cause-specific survival (CSS), local control rate (LCR), and acute/late adverse effects. RESULTS: A total of 2157 patients' data were collected from NIRS (n=1432), GHMC (n=515), and HIMAT (n=210). The number of patients in low-risk, intermediate-risk, and high-risk groups was 263 (12%), 679 (31%), and 1215 (56%), respectively. The five-year bRFS in low-risk, intermediate-risk, and high-risk patients was 92%, 89%, and 92%, respectively. The five-year CSS in low-risk, intermediate-risk, and high-risk patients was 100%, 100%, and 99%, respectively. The incidence of grade 2 late GU/GI toxicities was 4.6% and 0.4%, respectively, and the incidence of ⩾G3 toxicities were 0%. CONCLUSIONS: Favorable overall outcomes of CIRT for prostate cancer were suggested by the analysis of the first multi-institutional data. Copyright Â
Authors: Arnold Pompos; Robert L Foote; Albert C Koong; Quynh Thu Le; Radhe Mohan; Harald Paganetti; Hak Choy Journal: Front Oncol Date: 2022-06-14 Impact factor: 5.738
Authors: Osama Mohamad; Brock J Sishc; Janapriya Saha; Arnold Pompos; Asal Rahimi; Michael D Story; Anthony J Davis; D W Nathan Kim Journal: Cancers (Basel) Date: 2017-06-09 Impact factor: 6.639