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Miyazaki S, Tasaki Y, Nakatake M, Honda K, Nakamura D, Egawa A, Oki N, Mitsunari K, Nakamura Y, Imamura R, Toya R. Dose-escalated Salvage Whole-pelvic Radiotherapy for Biochemical Recurrence After Radical Prostatectomy for High-risk Prostate Cancer. CANCER DIAGNOSIS & PROGNOSIS 2024; 4:315-319. [PMID: 38707723 PMCID: PMC11062159 DOI: 10.21873/cdp.10326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 03/06/2024] [Indexed: 05/07/2024]
Abstract
Background/Aim To investigate the institutional experience of dose-escalated salvage whole-pelvic radiotherapy (WPRT) with the simultaneous integrated boost (SIB) technique in patients with biochemical recurrence (BCR) after radical prostatectomy for high-risk prostate cancer. Patients and Methods This retrospective study included 21 patients with BCR who received radical prostatectomy for high-risk prostate cancer and underwent salvage RT. Clinical target volume (CTV) of the whole pelvis (CTV56) included the prostate bed, common iliac, external iliac, internal iliac, and obturator lymph node regions. The boost CTV (CTV66) included the prostate bed. Planning target volumes (PTV) were generated by adding a margin of 6-8 mm to CTV (PTV56 and PTV66). Doses of 56.1 and 66 Gy in 33 fractions were delivered to PTV56 and PTV66, respectively. Results The 5-year biochemical progression-free survival, overall survival, and cause-specific survival rates were 72%, 94%, and 94%, respectively. A grade 3 late genitourinary toxicity event of gross hematuria was observed in one patient (4%). Acute and late toxicities of grade ≥3, other than gross hematuria, were not observed in any patient. Conclusion Dose-escalated salvage WPRT using the SIB technique provides appropriate tumor control without increasing the incident of significant toxicities.
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Affiliation(s)
- Shuhei Miyazaki
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yutaro Tasaki
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Mika Nakatake
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Koichi Honda
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Daisuke Nakamura
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Akiko Egawa
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Nozomi Oki
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kensuke Mitsunari
- Department of Urology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yuichiro Nakamura
- Department of Urology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Ryoichi Imamura
- Department of Urology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Ryo Toya
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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Nicolini A, Ferrari P, Morganti R, Carpi A. Treatment of Metastatic or High-Risk Solid Cancer Patients by Targeting the Immune System and/or Tumor Burden: Six Cases Reports. Int J Mol Sci 2019; 20:ijms20235986. [PMID: 31795079 PMCID: PMC6929121 DOI: 10.3390/ijms20235986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/20/2019] [Accepted: 11/25/2019] [Indexed: 12/30/2022] Open
Abstract
This article summarizes the histories of six patients with different solid tumors treated with a new strategy based on tumor burden reduction and immune evasion as potential targets. All six patients were at a high risk of relapse and were likely to have a minimal residual disease following conventional therapy: biochemical recurrence (BCR) following radical prostatectomy (RP) (two prostate cancers patients), removal of distant metastases (one colorectal and one breast cancer), and complete response (CR) of distant metastases to conventional therapy (one breast cancer and one esophageal–gastric junction cancer). Four of the patients, two after RP and BCR, one after removal of a single pulmonary metastasis from breast cancer, and one after CR to chemotherapy of peritoneal metastases and ascites from an esophageal–gastric junction primary cancer, regularly received cycles of a new drug schedule with the aim of inhibiting immune suppression (IT). In these four patients, preliminary laboratory tests of peripheral blood suggested an interleukin (IL)-2/IL-12 mediated stimulation of cellular immune response with a concomitant decrease in vascular endothelial growth factor (VEGF) immune suppression. The fifth case was a breast cancer patient with distant metastases in CR, while receiving beta-interferon and interleukin-2 in addition to conventional hormone therapy. To date, all five patients are alive and doing well and they have been unexpectedly disease-free for 201 and 78 months following BCR, 28 months following the removal of a single pulmonary metastases, 32 months following CR to chemotherapy of peritoneal metastases and ascites, and 140 months following diagnosis of multiple bone metastases, respectively. The sixth patient, who had colorectal cancer and multiple synchronous liver metastases and underwent nine surgical interventions for metastatic disease, although not disease-free, is doing well 98 months after primary surgery. Our six cases reports can be interpreted with the hypothesis that immune manipulation and/or a concomitant low tumor burden favored their clinical outcome.
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Affiliation(s)
- Andrea Nicolini
- Department of Oncology, Transplantation and New technologies in Medicine, University of Pisa, 56100 Pisa, Italy;
- Correspondence:
| | - Paola Ferrari
- Department of Oncology, Transplantation and New technologies in Medicine, University of Pisa, 56100 Pisa, Italy;
| | - Riccardo Morganti
- Section of Statistics, University Hospital of Pisa, 56100 Pisa, Italy;
| | - Angelo Carpi
- Department of Clinical and Experimental Medicine, University of Pisa, 56100 Pisa, Italy;
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Fluence-map generation for prostate intensity-modulated radiotherapy planning using a deep-neural-network. Sci Rep 2019; 9:15671. [PMID: 31666647 PMCID: PMC6821767 DOI: 10.1038/s41598-019-52262-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 10/10/2019] [Indexed: 01/30/2023] Open
Abstract
A deep-neural-network (DNN) was successfully used to predict clinically-acceptable dose distributions from organ contours for intensity-modulated radiotherapy (IMRT). To provide the next step in the DNN-based plan automation, we propose a DNN that directly generates beam fluence maps from the organ contours and volumetric dose distributions, without inverse planning. We collected 240 prostate IMRT plans and used to train a DNN using organ contours and dose distributions. After training was done, we made 45 synthetic plans (SPs) using the generated fluence-maps and compared them with clinical plans (CP) using various plan quality metrics including homogeneity and conformity indices for the target and dose constraints for organs at risk, including rectum, bladder, and bowel. The network was able to generate fluence maps with small errors. The qualities of the SPs were comparable to the corresponding CPs. The homogeneity index of the target was slightly worse in the SPs, but there was no difference in conformity index of the target, V60Gy of rectum, the V60Gy of bladder and the V45Gy of bowel. The time taken for generating fluence maps and qualities of SPs demonstrated the proposed method will improve efficiency of the treatment planning and help maintain the quality of plans.
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Pak S, You D, Jeong IG, Kim YS, Hong JH, Kim CS, Ahn H. Time to biochemical relapse after radical prostatectomy and efficacy of salvage radiotherapy in patients with prostate cancer. Int J Clin Oncol 2019; 24:1238-1246. [PMID: 31087170 DOI: 10.1007/s10147-019-01463-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 05/02/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND To investigate the prognostic and therapeutic implications of time to biochemical relapse (BCR) in patients with prostate cancer after radical prostatectomy. METHODS The records of 3210 consecutive men with prostate cancer who underwent radical prostatectomy between January 1998 and June 2013 were retrospectively reviewed. Patients with BCR were divided into three groups based on quartiles of time to BCR, namely an early group (first quartile), an intermediate group (second and third quartiles) and late group (fourth quartile). RESULTS 817 (25.5%) patients experienced BCR at a median of 24.9 months after surgery. The 8-year rate of distant metastasis-free survival (64.3% vs. 41.3%, p = 0.002) and cancer-specific survival (86.6% vs. 63.4%, p < 0.001) was higher in the salvage radiotherapy (SRT) group than the androgen deprivation therapy (ADT) group in patients with early BCR, whereas those rates (91.3% vs. 87.9%, p = 0.607 and 100.0% vs. 93.1%, p = 0.144, respectively) were similar in patients with late BCR. In the intermediate BCR group, the impact of SRT over ADT on 8-year cancer-specific survival was modest (91.9% vs. 82.3%, p = 0.057) and was limited to patients with pT2 or pT3a disease. CONCLUSIONS SRT may decrease the risk of distant metastasis and cancer-specific mortality in patients with early BCR. However, a survival benefit for those with late BCR was not apparent. For patients with intermediate BCR, SRT was associated with a cancer-specific survival benefit in patients with pT2 or pT3a disease. Novel genomic tests and imaging modalities may support clinical decision-making in these patients.
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Affiliation(s)
- Sahyun Pak
- Department of Urology, Center for Urologic Cancer, National Cancer Center, Goyang, South Korea
| | - Dalsan You
- Department of Urology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea
| | - In Gab Jeong
- Department of Urology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea
| | - Young Seok Kim
- Department of Radiation Oncology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Jun Hyuk Hong
- Department of Urology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea
| | - Choung-Soo Kim
- Department of Urology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea
| | - Hanjong Ahn
- Department of Urology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
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Elective pelvic irradiation in prostate cancer patients with biochemical failure following radical prostatectomy: A propensity score matching analysis. PLoS One 2019; 14:e0215057. [PMID: 30973905 PMCID: PMC6459518 DOI: 10.1371/journal.pone.0215057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 03/26/2019] [Indexed: 11/19/2022] Open
Abstract
Purpose To investigate whether whole pelvic radiotherapy (WPRT) improves biochemical relapse-free survival (bRFS) vs. prostate bed radiotherapy (PBRT) in prostate cancer patients receiving salvage radiotherapy (SRT) after radical prostatectomy. Methods Data from patients with prostate cancer who underwent SRT for biochemical recurrence between 2005 and 2012 in two academic institutions were retrospectively reviewed. Patients treated with WPRT in one hospital were compared with patients treated with PBRT in the other. Propensity scoring was performed to balance the characteristics of the different treatment groups, and bRFS was compared. Results Data from a total of 191 patients were included in the analysis (WPRT, n = 108; PBRT, n = 83). The median follow-up period was 66 months. Prior to matching, patients who received WPRT had higher pathologic Gleason scores as well as a higher incidence of pre-SRT PSA levels >0.5 ng/mL and lower rates of concurrent androgen-deprivation therapy. Propensity score matching balanced these characteristics and generated a cohort comprising 56 patients from each group. In the matched cohort, the 5 year bRFS of the WPRT group was significantly higher than that of the PBRT group (65.9 vs. 42.2%, p = 0.017). Multivariate analysis revealed that WPRT was an independent prognostic factor for bRFS (hazard ratio: 0.45, 95% confidence interval: 0.26–0.75, p = 0.002). This benefit of WPRT on bRFS was maintained in subgroup analyses, especially in patients with preoperative PSA level ≤20 ng/mL or pre-SRT PSA level ≥0.4 ng/mL. Conclusions These data suggest that, following radical prostatectomy, elective WPRT during SRT may improve bRFS compared with PBRT in selected patients. Patients with preoperative PSA level ≤20 ng/mL or pre-SRT PSA level ≥0.4 ng/mL represent a potential subgroup who benefit most from receiving WPRT. Results of prospective randomized trials are awaited to confirm this finding.
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Bruni A, Ingrosso G, Trippa F, Di Staso M, Lanfranchi B, Rubino L, Parente S, Frassinelli L, Maranzano E, Santoni R, Sighinolfi MC, Lohr F, Mazzeo E. Macroscopic locoregional relapse from prostate cancer: which role for salvage radiotherapy? Clin Transl Oncol 2019; 21:1532-1537. [PMID: 30868389 DOI: 10.1007/s12094-019-02084-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 03/07/2019] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Salvage radiotherapy (SRT) after radical prostatectomy for prostate cancer (PCa) is recommended as soon as PSA rises above 0.20 ng/ml, but many patients (pts) still experience local macroscopic relapse. The aim of this multicentric retrospective analysis was to evaluate the role of SRT in pts with macroscopic relapse. MATERIALS AND METHODS From 2001 to 2016, 105 consecutive pts with macroscopic PCa relapse underwent SRT ± androgen deprivation therapy (ADT). Mean age was 72 years. At time of relapse, 29 pts had a PSA value < 1.0 ng/mL, 50 from 1.1 to 5, and 25 pts > 5. Before SRT, 23 pts had undergone 18F-choline PET and 15 pts pelvic MRI. Ninety-four pts had prostatic bed relapse only, and four nodal involvement. Fifty-one pts were previously submitted to first-line ADT, while 6 pts received ≥ 2 lines. RESULTS At a median follow-up of 52 months, 89 pts were alive, while 16 were dead. Total RT dose to macroscopic lesions was > 70 Gy in 58 pts, 66-70 Gy in 43, and < 66 Gy in 4 pts. In 72 pts, target volume encompassed only the prostatic bed with sequential boost to macroscopic site; 33 pts received prophylactic pelvic RT. Ten-year overall survival was 76.1%, while distant metastasis-free survival was 73.3%. No grade 4-5 toxicities were found. CONCLUSIONS SRT ± ADT for macroscopic relapse showed a favorable oncological outcome supporting its important role in this scenario. Data from this series suggest that SRT may either postpone ADT or improve results over ADT alone in appropriately selected pts.
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Affiliation(s)
- A Bruni
- Radiotherapy Unit, University Hospital of Modena, Via del Pozzo 71, 41100, Modena, Italy.
| | - G Ingrosso
- Radiotherapy Unit, "Tor Vergata" University General Hospital, Rome, Italy
| | - F Trippa
- Radiotherapy Unit, "Santa Maria" University Hospital, Terni, Italy
| | - M Di Staso
- Radiotherapy Unit, "Nuovo San Salvatore" Hospital, L'Aquila, Italy
| | - B Lanfranchi
- Radiotherapy Unit, University Hospital of Modena, Via del Pozzo 71, 41100, Modena, Italy
| | - L Rubino
- Radiotherapy Unit, University Hospital of Modena, Via del Pozzo 71, 41100, Modena, Italy
| | - S Parente
- Radiotherapy Unit, "Nuovo San Salvatore" Hospital, L'Aquila, Italy
| | - L Frassinelli
- Radiotherapy Unit, University Hospital of Modena, Via del Pozzo 71, 41100, Modena, Italy
| | - E Maranzano
- Radiotherapy Unit, "Santa Maria" University Hospital, Terni, Italy
| | - R Santoni
- Radiotherapy Unit, "Tor Vergata" University General Hospital, Rome, Italy
| | - M C Sighinolfi
- Urology Unit, University Hospital of Modena, Modena, Italy
| | - F Lohr
- Radiotherapy Unit, University Hospital of Modena, Via del Pozzo 71, 41100, Modena, Italy
| | - E Mazzeo
- Radiotherapy Unit, University Hospital of Modena, Via del Pozzo 71, 41100, Modena, Italy
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Dal Pra A, Abramowitz MC, Stoyanova R, Pollack A. Contemporary role of postoperative radiotherapy for prostate cancer. Transl Androl Urol 2018; 7:399-413. [PMID: 30050800 PMCID: PMC6043752 DOI: 10.21037/tau.2018.06.01] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
While radical prostatectomy (RP) has provided long-term disease control for the majority of patients with localized prostate cancer (CaP), nearly 30% of all surgical patients have disease progression. For high-risk patients, more than half of men experience disease recurrence within 10 years. Postoperative radiotherapy is the only known potentially curative treatment for a large number of patients following prostatectomy. Lately, there have been several advances with the potential to improve outcomes for patients undergoing postoperative radiotherapy. This article will give an overview of the existing literature and current controversies on: (I) timing of postoperative radiation; (II) use of concomitant androgen deprivation therapy; (III) optimal dose to the prostate bed; (IV) use of hypofractionation; (V) elective treatment of the pelvic lymph nodes; (VI) novel imaging modalities, and (VII) genomic biomarkers.
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Affiliation(s)
- Alan Dal Pra
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Matthew C Abramowitz
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Radka Stoyanova
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Alan Pollack
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL, USA
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