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Singh M, Murthy V. Pushing the Borders: One at a Time. Reply to C. Onal, A. Elmaliy, P. Hurmuz's Letter to Editor Re: Patterns of Failure After Prostate-Only Radiotherapy in High-Risk Prostate Cancer: Implications for Refining Pelvic Nodal Contouring Guidelines in Regard to Singh et al. Clin Oncol (R Coll Radiol) 2024; 36:e346-e347. [PMID: 38969528 DOI: 10.1016/j.clon.2024.06.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 07/07/2024]
Affiliation(s)
- M Singh
- Department of Radiation Oncology, Tata Memorial Hospital and Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Homi Bhabha National Institute (HBNI), Mumbai, India
| | - V Murthy
- Department of Radiation Oncology, Tata Memorial Hospital and Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Homi Bhabha National Institute (HBNI), Mumbai, India
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Quintin K, Créhange G, Graff P. [Moderately hypofractionated dose escalation radiotherapy for localized prostate cancer, ESHYPRO: Results of a retrospective single-centre series evaluating safety and efficacy]. Cancer Radiother 2024:S1278-3218(24)00098-2. [PMID: 39155168 DOI: 10.1016/j.canrad.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/13/2024] [Accepted: 01/19/2024] [Indexed: 08/20/2024]
Abstract
PURPOSE Prostate cancer is the most frequent cancer among men and radiotherapy hypofractionation regimens have become standard treatments for the localized stages, but the absence of increased risk of acute and late genitourinary or gastrointestinal toxicity of the dose escalation still must be demonstrated. MATERIAL AND METHODS The study population included all patients with localized prostatic adenocarcinoma treated at the institut Curie from February 2016 to March 2018 by external radiation delivered by a linear accelerator using an image-guided conformal intensity modulation technique at a total dose of 75Gy in 30 fractions of 2.5Gy in the planning target volume that included the prostate and the proximal seminal vesicles, and could be paired with a prophylactic lymph node radiotherapy at 46Gy in 23 fractions with simultaneous integrated boost. RESULTS A total of 166 patients were included. Among them, 68.6% were unfavourable intermediate or (very) high risk. The median age and follow-up were 71.4years and 3.96years. One hundred and forty-nine patients received prophylactic lymph node radiotherapy (89.8%). One hundred and thirty-one patients received hormonotherapy (78.9%). Genito-urinary toxicity events of grades 2 or above during radiotherapy, at 6months, 1year and 5years were respectively 36.7%, 8.8%, 3.1% and 4.7%. Two patients had late grade 4 toxicity at 5years (1.6%). Grade 2 gastrointestinal toxicity events during radiotherapy, 6months, 1year and 5years were respectively 15.1%, 1.9%, 14.6% and 9.3%. Of these, eight patients had grade 3 toxicity (6.2%). There was no grade 4 toxicity. Analyses did not reveal any predictive factor for toxicity. The 5-year overall, progression-free, and specific survival rates were respectively 82.4%, 85.7%, and 93.3%. Serum prostate specific antigen concentration and cardiovascular risk factors were found to be predictive factors of deterioration in overall survival (P=0.0028 for both). CONCLUSION External radiotherapy for localized prostatic cancer with our moderately hypofractionated dose escalation regimen is well tolerated. In the absence of increased late toxicity, the analysis of the modes of long-term relapses will be interesting to determine the benefit of this dose escalation on local and distant relapses.
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Affiliation(s)
- K Quintin
- Service d'oncologie-radiothérapie, institut Curie, 26, rue d'Ulm, 75005 Paris, France.
| | - G Créhange
- Service d'oncologie-radiothérapie, institut Curie, 26, rue d'Ulm, 75005 Paris, France
| | - P Graff
- Service d'oncologie-radiothérapie, institut Curie, 26, rue d'Ulm, 75005 Paris, France
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Wen F, Chen Z, Wang X, Dou M, Yang J, Yao Y, Shen Y. Deep learning based clinical target volumes contouring for prostate cancer: Easy and efficient application. J Appl Clin Med Phys 2024:e14482. [PMID: 39120487 DOI: 10.1002/acm2.14482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 05/30/2024] [Accepted: 07/09/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND Radiotherapy has been crucial in prostate cancer treatment. However, manual segmentation is labor intensive and highly variable among radiation oncologists. In this study, a deep learning based automated contouring model is constructed for clinical target volumes (CTVs) of intact and postoperative prostate cancer. METHODS Computed tomography (CT) data sets of 197 prostate cancer patients were collected. Two auto-delineation models were built for radical radiotherapy and postoperative radiotherapy of prostate cancer respectively, and each model included CTVn for pelvic lymph nodes and CTVp for prostate tumors or prostate tumor beds. RESULTS In the radical radiotherapy model, the volumetric dice (VD) coefficient of CTVn calculated by AI, was higher than that of the one delineated by the junior physicians (0.85 vs. 0.82, p = 0.018); In the postoperative radiotherapy model, the quantitative parameter of CTVn and CTVp, counted by AI, was better than that of the junior physicians. The median delineation time for AI was 0.23 min in the postoperative model and 0.26 min in the radical model, which were significantly shorter than those of the physicians (50.40 and 45.43 min, respectively, p < 0.001). The correction time of the senior physician for AI was much shorter compared with that for the junior physicians in both models (p < 0.001). CONCLUSION Using deep learning and attention mechanism, a highly consistent and time-saving contouring model was built for CTVs of pelvic lymph nodes and prostate tumors or prostate tumor beds for prostate cancer, which also might be a good approach to train junior radiation oncologists.
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Affiliation(s)
- Feng Wen
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Abdominal Oncology Ward, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Zhebin Chen
- Chengdu Institute of Computer Application, Chinese Academy of Sciences, Sichuan, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xin Wang
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Abdominal Oncology Ward, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Meng Dou
- Chengdu Institute of Computer Application, Chinese Academy of Sciences, Sichuan, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jialuo Yang
- Department of Medicine Oncology, Shifang people's Hospital, Shifang, China
| | - Yu Yao
- Chengdu Institute of Computer Application, Chinese Academy of Sciences, Sichuan, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yali Shen
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Abdominal Oncology Ward, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
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4
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Schubert P, Strnad V, Weißmann T, Schweizer C, Lotter M, Kreppner S, Karius A, Fietkau R, Merten R. Protocol-based CT-guided brachytherapy for patients with prostate cancer and previous rectal extirpation-a curative approach. Strahlenther Onkol 2024:10.1007/s00066-024-02266-y. [PMID: 39095649 DOI: 10.1007/s00066-024-02266-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 06/28/2024] [Indexed: 08/04/2024]
Abstract
OBJECTIVE There are numerous curative treatment possibilities for prostate cancer. In patients who have undergone rectal extirpation for rectal cancer treatment, curative options are limited due to anatomic changes and previous irradiation of the pelvis. In this analysis, we validate the feasibility of CT-guided transperineal interstitial brachytherapy for this specific scenario. PATIENTS AND METHODS We analyzed the treatment procedures and outcomes of 5 patients with metachronic nonmetastatic prostate cancer. Ultrasound-guided brachytherapy was not possible in any of the patients. Of these 5 patients, 3 were treated for prostate cancer using temporary brachytherapy with Ir-192 only, and 2 were treated with external-beam radiation therapy and temporary brachytherapy as a boost. CT-guided brachytherapy was performed in all patients. We analyzed the feasibility, efficacy, treatment-related toxicity, and quality of life (EORTC-30, IEFF, IPSS, and ICIQ questionnaires) of the treatments. RESULTS Median follow-up was 35 months. Two out of five patients received boost irradiation (HDR 2 × 9 Gy, PDR 30 Gy). Three out of five patients were treated with PDR brachytherapy in two sessions up to a total dose of 60 Gy. Dosimetric parameters were documented as median values as follows: V100 94.7% (94.5-98.4%), D2bladder 64.3% (50.9-78.3%), D10urethra 131.05% (123.2%-141.2%), and D30urethra 122.45% (116.2%-129.5%). At the time of analysis, no biochemical recurrence had been documented. Furthermore, neither early nor late side effects exceeding CTCAE grade 2 were documented. CONCLUSION CT-guided transperineal brachytherapy of the prostate in patients with previous rectal surgery and radiation therapy is safe and represents a possible curative treatment option. Brachytherapy can be considered for patients with metachronic prostate cancer in this specific scenario, albeit preferably in experienced high-volume centers.
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Affiliation(s)
- Philipp Schubert
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany.
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany.
| | - Vratislav Strnad
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - Thomas Weißmann
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - Claudia Schweizer
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - Michael Lotter
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - Stephan Kreppner
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - Andre Karius
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - Rainer Fietkau
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - Ricarda Merten
- Department of Radiation Oncology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
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Gogineni E, Chen H, Cruickshank IK, Koempel A, Gogineni A, Li H, Deville C. In Silico Comparison of Three Different Beam Arrangements for Intensity-Modulated Proton Therapy for Postoperative Whole Pelvic Irradiation of Prostate Cancer. Cancers (Basel) 2024; 16:2702. [PMID: 39123430 PMCID: PMC11311848 DOI: 10.3390/cancers16152702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/17/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024] Open
Abstract
Background and purpose: Proton therapy has been shown to provide dosimetric benefits in comparison with IMRT when treating prostate cancer with whole pelvis radiation; however, the optimal proton beam arrangement has yet to be established. The aim of this study was to evaluate three different intensity-modulated proton therapy (IMPT) beam arrangements when treating the prostate bed and pelvis in the postoperative setting. Materials and Methods: Twenty-three post-prostatectomy patients were planned using three different beam arrangements: two-field (IMPT2B) (opposed laterals), three-field (IMPT3B) (opposed laterals inferiorly matched to a posterior-anterior beam superiorly), and four-field (IMPT4B) (opposed laterals inferiorly matched to two posterior oblique beams superiorly) arrangements. The prescription was 50 Gy radiobiological equivalent (GyE) to the pelvis and 70 GyE to the prostate bed. Comparisons were made using paired two-sided Wilcoxon signed-rank tests. Results: CTV coverages were met for all IMPT plans, with 99% of CTVs receiving ≥ 100% of prescription doses. All organ at risk (OAR) objectives were met with IMPT3B and IMPT4B plans, while several rectum objectives were exceeded by IMPT2B plans. IMPT4B provided the lowest doses to OARs for the majority of analyzed outcomes, with significantly lower doses than IMPT2B +/- IMPT3B for bladder V30-V50 and mean dose; bowel V15-V45 and mean dose; sigmoid maximum dose; rectum V40-V72.1, maximum dose, and mean dose; femoral head V37-40 and maximum dose; bone V40 and mean dose; penile bulb mean dose; and skin maximum dose. Conclusion: This study is the first to compare proton beam arrangements when treating the prostate bed and pelvis. four-field plans provided better sparing of the bladder, bowel, and rectum than 2- and three-field plans. The data presented herein may help inform the future delivery of whole pelvis IMPT for prostate cancer.
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Affiliation(s)
- Emile Gogineni
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (A.K.); (A.G.)
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (H.C.); (I.K.C.J.); (H.L.); (C.D.J.)
| | - Hao Chen
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (H.C.); (I.K.C.J.); (H.L.); (C.D.J.)
| | - Ian K. Cruickshank
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (H.C.); (I.K.C.J.); (H.L.); (C.D.J.)
| | - Andrew Koempel
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (A.K.); (A.G.)
| | - Aarush Gogineni
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (A.K.); (A.G.)
| | - Heng Li
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (H.C.); (I.K.C.J.); (H.L.); (C.D.J.)
| | - Curtiland Deville
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (H.C.); (I.K.C.J.); (H.L.); (C.D.J.)
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Furman B, Falick Michaeli T, Den R, Ben Haim S, Popovtzer A, Wygoda M, Blumenfeld P. Pelvic lymph node mapping in prostate cancer: examining the impact of PSMA PET/CT on radiotherapy decision-making in patients with node-positive disease. Cancer Imaging 2024; 24:96. [PMID: 39075567 PMCID: PMC11285572 DOI: 10.1186/s40644-024-00742-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 07/16/2024] [Indexed: 07/31/2024] Open
Abstract
INTRODUCTION Prostate Specific Membrane Antigen (PSMA) imaging with Positron Emission Tomography (PET) plays a crucial role in prostate cancer management. However, there is a lack of comprehensive data on how PSMA PET/CT (Computed Tomography) influences radiotherapeutic decisions, particularly in node-positive prostate cancer cases. This study aims to address this gap by evaluating two primary objectives: (1) Mapping the regional and non-regional lymph nodes (LNs) up to the aortic bifurcation and their distribution using conventional methods with CT compared to PSMA PET/CT, and (2) assessing the impact of PSMA PET/CT findings on radiotherapeutic decisions. METHODS A retrospective analysis of 95 node-positive prostate cancer patients who underwent both CT and PSMA PET/CT imaging prior to primary radiotherapy and androgen deprivation therapy (ADT) was conducted. The analysis focused on identifying LNs in various regions including the common iliac, external iliac, internal iliac, obturator, presacral, mesorectal, inguinal, and other stations. Treatment plans were reviewed for modifications based on PSMA PET/CT findings, and statistical analysis was performed to identify predictors for exclusive nodal positivity on PSMA PET/CT scans. RESULTS PSMA PET/CT identified additional positive nodes in 48% of cases, resulting in a staging shift from N0 to N1 in 29% of patients. The most frequent metastatic LNs were located in the external iliac (76 LNs; 34%), internal iliac (43 LNs; 19%), and common iliac (35 LNs; 15%) stations. In patients with nodes only detected on PSMA PET the most common nodes were in the external iliac (27, 40%), internal iliac (13, 19%), obturator (11, 15%) stations. Within the subgroup of 28 patients exclusively demonstrating PSMA PET-detected nodes, changes in radiotherapy treatment fields were implemented in 5 cases (18%), and a dose boost was applied for 23 patients (83%). However, no discernible predictors for exclusive nodal positivity on PSMA PET/CT scans emerged from the analysis. DISCUSSION The study underscores the pivotal role of PSMA PET/CT compared to CT alone in accurately staging node-positive prostate cancer and guiding personalized radiotherapy strategies. The routine integration of PSMA PET/CT into diagnostic protocols is advocated to optimize treatment precision and improve patient outcomes.
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Affiliation(s)
- Ben Furman
- Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, POB 12272, Jerusalem, 9112002, Israel
| | - Tal Falick Michaeli
- Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, POB 12272, Jerusalem, 9112002, Israel
| | - Robert Den
- Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, POB 12272, Jerusalem, 9112002, Israel
- Department of Radiation Oncology, Thomas Jefferson, Philadelphia, PA, USA
| | - Simona Ben Haim
- Department of Nuclear Medicine and Medical Biophysics, Faculty of Medicine, Hebrew University of Jerusalem, Hadassah Medical Center, Jerusalem, Israel
| | - Aron Popovtzer
- Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, POB 12272, Jerusalem, 9112002, Israel
- Department of Medical Oncology, Sharett Institute of Oncology, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Marc Wygoda
- Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, POB 12272, Jerusalem, 9112002, Israel
| | - Philip Blumenfeld
- Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, POB 12272, Jerusalem, 9112002, Israel.
- Department of Medical Oncology, Sharett Institute of Oncology, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.
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7
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Huijben EMC, Terpstra ML, Galapon AJ, Pai S, Thummerer A, Koopmans P, Afonso M, van Eijnatten M, Gurney-Champion O, Chen Z, Zhang Y, Zheng K, Li C, Pang H, Ye C, Wang R, Song T, Fan F, Qiu J, Huang Y, Ha J, Sung Park J, Alain-Beaudoin A, Bériault S, Yu P, Guo H, Huang Z, Li G, Zhang X, Fan Y, Liu H, Xin B, Nicolson A, Zhong L, Deng Z, Müller-Franzes G, Khader F, Li X, Zhang Y, Hémon C, Boussot V, Zhang Z, Wang L, Bai L, Wang S, Mus D, Kooiman B, Sargeant CAH, Henderson EGA, Kondo S, Kasai S, Karimzadeh R, Ibragimov B, Helfer T, Dafflon J, Chen Z, Wang E, Perko Z, Maspero M. Generating synthetic computed tomography for radiotherapy: SynthRAD2023 challenge report. Med Image Anal 2024; 97:103276. [PMID: 39068830 DOI: 10.1016/j.media.2024.103276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 06/02/2024] [Accepted: 07/11/2024] [Indexed: 07/30/2024]
Abstract
Radiation therapy plays a crucial role in cancer treatment, necessitating precise delivery of radiation to tumors while sparing healthy tissues over multiple days. Computed tomography (CT) is integral for treatment planning, offering electron density data crucial for accurate dose calculations. However, accurately representing patient anatomy is challenging, especially in adaptive radiotherapy, where CT is not acquired daily. Magnetic resonance imaging (MRI) provides superior soft-tissue contrast. Still, it lacks electron density information, while cone beam CT (CBCT) lacks direct electron density calibration and is mainly used for patient positioning. Adopting MRI-only or CBCT-based adaptive radiotherapy eliminates the need for CT planning but presents challenges. Synthetic CT (sCT) generation techniques aim to address these challenges by using image synthesis to bridge the gap between MRI, CBCT, and CT. The SynthRAD2023 challenge was organized to compare synthetic CT generation methods using multi-center ground truth data from 1080 patients, divided into two tasks: (1) MRI-to-CT and (2) CBCT-to-CT. The evaluation included image similarity and dose-based metrics from proton and photon plans. The challenge attracted significant participation, with 617 registrations and 22/17 valid submissions for tasks 1/2. Top-performing teams achieved high structural similarity indices (≥0.87/0.90) and gamma pass rates for photon (≥98.1%/99.0%) and proton (≥97.3%/97.0%) plans. However, no significant correlation was found between image similarity metrics and dose accuracy, emphasizing the need for dose evaluation when assessing the clinical applicability of sCT. SynthRAD2023 facilitated the investigation and benchmarking of sCT generation techniques, providing insights for developing MRI-only and CBCT-based adaptive radiotherapy. It showcased the growing capacity of deep learning to produce high-quality sCT, reducing reliance on conventional CT for treatment planning.
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Affiliation(s)
- Evi M C Huijben
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Maarten L Terpstra
- Radiotherapy Department, University Medical Center Utrecht, Utrecht, The Netherlands; Computational Imaging Group for MR Diagnostics & Therapy, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Arthur Jr Galapon
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Suraj Pai
- Department of Radiation Oncology (Maastro), GROW School for Oncology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Adrian Thummerer
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands; Department of Radiation Oncology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Peter Koopmans
- Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Manya Afonso
- Wageningen University & Research, Wageningen Plant Research, Wageningen, The Netherlands
| | - Maureen van Eijnatten
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Oliver Gurney-Champion
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, location University of Amsterdam, Amsterdam, The Netherlands; Cancer Center Amsterdam, Imaging and Biomarkers, Amsterdam, The Netherlands
| | - Zeli Chen
- School of Biomedical Engineering, Southern Medical University, Guangzhou, China
| | - Yiwen Zhang
- School of Biomedical Engineering, Southern Medical University, Guangzhou, China
| | - Kaiyi Zheng
- School of Biomedical Engineering, Southern Medical University, Guangzhou, China
| | - Chuanpu Li
- School of Biomedical Engineering, Southern Medical University, Guangzhou, China
| | - Haowen Pang
- School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, China
| | - Chuyang Ye
- School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, China
| | - Runqi Wang
- School of Biomedical Engineering, ShanghaiTech University, Shanghai, China
| | - Tao Song
- Fudan University, Shanghai, China
| | - Fuxin Fan
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Jingna Qiu
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Yixing Huang
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | | | | | | | | | - Pengxin Yu
- Infervision Medical Technology Co., Ltd. Beijing, China
| | - Hongbin Guo
- Department of Biomedical Engineering, Shantou University, China
| | - Zhanyao Huang
- Department of Biomedical Engineering, Shantou University, China
| | | | | | - Yubo Fan
- Department of Computer Science, Vanderbilt University, Nashville, USA
| | - Han Liu
- Department of Computer Science, Vanderbilt University, Nashville, USA
| | - Bowen Xin
- Australian e-Health Research Centre, CSIRO, Herston, Queensland, Australia
| | - Aaron Nicolson
- Australian e-Health Research Centre, CSIRO, Herston, Queensland, Australia
| | - Lujia Zhong
- Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA, USA
| | - Zhiwei Deng
- Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA, USA
| | | | | | - Xia Li
- Center for Proton Therapy, Paul Scherrer Institut, Villigen, Switzerland; Department of Computer Science, ETH Zurich, Zurich, Switzerland
| | - Ye Zhang
- Center for Proton Therapy, Paul Scherrer Institut, Villigen, Switzerland; Department of Computer Science, ETH Zurich, Zurich, Switzerland
| | - Cédric Hémon
- University Rennes 1, CLCC Eugène Marquis, INSERM, LTSI, Rennes, France
| | - Valentin Boussot
- University Rennes 1, CLCC Eugène Marquis, INSERM, LTSI, Rennes, France
| | | | | | - Lu Bai
- MedMind Technology Co. Ltd., Beijing, China
| | | | - Derk Mus
- MRI Guidance BV, Utrecht, The Netherlands
| | | | | | | | | | - Satoshi Kasai
- Niigata University of Health and Welfare, Niigata, Japan
| | - Reza Karimzadeh
- Image Analysis, Computational Modelling and Geometry, University of Copenhagen, Denmark
| | - Bulat Ibragimov
- Image Analysis, Computational Modelling and Geometry, University of Copenhagen, Denmark
| | | | - Jessica Dafflon
- Data Science and Sharing Team, Functional Magnetic Resonance Imaging Facility, National Institute of Mental Health, Bethesda, USA; Machine Learning Team, Functional Magnetic Resonance Imaging Facility National Institute of Mental Health, Bethesda, USA
| | - Zijie Chen
- Shenying Medical Technology (Shenzhen) Co., Ltd., Shenzhen, Guangdong, China
| | - Enpei Wang
- Shenying Medical Technology (Shenzhen) Co., Ltd., Shenzhen, Guangdong, China
| | - Zoltan Perko
- Delft University of Technology, Faculty of Applied Sciences, Department of Radiation Science and Technology, Delft, The Netherlands
| | - Matteo Maspero
- Radiotherapy Department, University Medical Center Utrecht, Utrecht, The Netherlands; Computational Imaging Group for MR Diagnostics & Therapy, University Medical Center Utrecht, Utrecht, The Netherlands.
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Singh M, Maitre P, Mody R, Murthy V. Patterns of Failure After Prostate-Only Radiotherapy in High-Risk Prostate Cancer: Implications for Refining Pelvic Nodal Contouring Guidelines. Clin Oncol (R Coll Radiol) 2024; 36:445-451. [PMID: 38664178 DOI: 10.1016/j.clon.2024.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/20/2024] [Accepted: 04/02/2024] [Indexed: 06/03/2024]
Abstract
PURPOSE To study prostate specific membrane antigen - positron emission tomography (Ga68PSMA-PETCT) based patterns of relapse at biochemical failure (BCF) after prostate-only radiotherapy (PORT) in high-risk (HR) prostate cancer and its implications on pelvic contouring recommendations. METHODS AND MATERIALS Patients with clinico-radiological high-risk node-negative prostate cancer treated with curative PORT and androgen deprivation therapy (ADT), either within the POP-RT randomised trial or off trial, who underwent a Ga68PSMA-PETCT upon BCF were included. Patterns of regional and distant recurrence on Ga68PSMA-PETCT were studied. Pelvic nodal recurrences were mapped with reference to the superior border of pubic symphysis. Pelvic lymph nodal caudal border (PLNcb) recommendations in the published contouring guidelines (RTOGcb, GETUGcb, PIVOTALcb, NRGcb, GFRUcb) were evaluated. RESULTS Of the total 262 patients screened, 68 eligible patients were included (POP-RT trial 35 patients; off-trial 33 patients). Median follow-up was 91 months (IQR, 72-117) and median time to BCF was 65 months (IQR, 49-83). Regional and distant recurrence was seen in 31 (46%) and 31 (46%) patients, respectively. Of the nodal recurrences, nearly half (46%, 14/31) had no distant metastases and 64% (20/31) had a failure in the common iliac nodal region. The lower-most nodal recurrence was 20 mm cranial to the top of pubic symphysis (RTOGcb, GETUGcb, GFRUcb) and 10 mm cranial to the PIVOTALcb. The PLNcb recommended by NRG guideline (NRGcb) had an inter-patient variability of 32 mm, ranging from 16 mm above to 16 mm below the top of pubic symphysis, and the lower most nodal recurrence ranged from 4 mm to 36 mm cranial to NRGcb. CONCLUSION Pelvic failures accounted for a major proportion of recurrences after prostate-only radiotherapy, with the caudal most nodal recurrence being 20 mm cranial to the top of pubic symphysis. This could have implications in defining the caudal border of contouring recommendations.
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Affiliation(s)
- M Singh
- Department of Radiation Oncology, Tata Memorial Hospital and Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Homi Bhabha National Institute (HBNI), Mumbai, India.
| | - P Maitre
- Department of Radiation Oncology, Tata Memorial Hospital and Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Homi Bhabha National Institute (HBNI), Mumbai, India.
| | - R Mody
- Department of Radiation Oncology, Tata Memorial Hospital and Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Homi Bhabha National Institute (HBNI), Mumbai, India.
| | - V Murthy
- Department of Radiation Oncology, Tata Memorial Hospital and Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Homi Bhabha National Institute (HBNI), Mumbai, India.
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9
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Armstrong WR, Kishan AU, Booker KM, Grogan TR, Elashoff D, Lam EC, Clark KJ, Steinberg ML, Fendler WP, Hope TA, Nickols NG, Czernin J, Calais J. Impact of Prostate-specific Membrane Antigen Positron Emission Tomography/Computed Tomography on Prostate Cancer Salvage Radiotherapy Management: Results from a Prospective Multicenter Randomized Phase 3 Trial (PSMA-SRT NCT03582774). Eur Urol 2024; 86:52-60. [PMID: 38290964 DOI: 10.1016/j.eururo.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 12/12/2023] [Accepted: 01/10/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND AND OBJECTIVE Both imaging and several prognostic factors inform the planning of salvage radiotherapy (SRT). Prostate-specific membrane antigen positron emission tomography (PSMA-PET) can localize disease unseen by other imaging modalities. The main objective of the study was to evaluate the impact of PSMA-PET on biochemical recurrence-free survival rate after SRT. METHODS This prospective randomized, controlled, phase 3 clinical trial randomized 193 patients with biochemical recurrence of prostate cancer after radical prostatectomy to proceed with SRT (control arm, n = 90) or undergo a PSMA-PET/computed tomography (CT) scan prior to SRT planning (investigational arm, n = 103) from June 2018 to August 2020. Any other approved imaging modalities were allowed in both arms (including fluciclovine-PET). This is a secondary endpoint analysis: impact of PSMA-PET on SRT planning. Case-report forms were sent to referring radiation oncologists to collect the management plans before randomization and after completion of SRT. The relative frequency (%) of management changes within each arm were compared using chi-square and Fisher's exact tests. KEY FINDINGS AND LIMITATIONS The delivered SRT plan was available in 178/193 patients (92.2%;76/90 control [84.4%] and 102/103 PSMA-PET [99%]). Median prostate-specific antigen levels at enrollment was 0.30 ng/ml (interquartile range [IQR] 0.19-0.91) in the control arm and 0.23 ng/ml (IQR 0.15-0.54) in the PSMA-PET arm. Fluciclovine-PET was used in 33/76 (43%) in the control arm. PSMA-PET localized recurrence(s) in 38/102 (37%): nine of 102 (9%) outside of the pelvis (M1), 16/102 (16%) in the pelvic LNs (N1, with or without local recurrence), and 13/102 (13%) in the prostate fossa only. There was a 23% difference (95% confidence interval [CI] 9-35%, p = 0.002) of frequency of major changes between the control arm (22% [17/76]) and the PSMA-PET intervention arm (45%[46/102]). Of the major changes in the intervention group, 33/46 (72%) were deemed related to PSMA-PET. There was a 17.6% difference (95% CI 5.4-28.5%, p = 0.005) of treatment escalation frequency between the control arm (nine of 76 [12%]) and the intervention arm (30/102 [29%]). Treatment de-escalation occurred in the control and intervention arms in eight of 76 (10.5%) and 12/102 (11.8%) patients, and mixed changes in zero of 76 (0%) and four of 102 (3.9%) patients, respectively. CONCLUSIONS AND CLINICAL IMPLICATIONS In this prospective randomized phase 3 study, PSMA-PET findings provided information that initiated major management changes to SRT planning in 33/102 (33%) patients. The final readout of the primary endpoint planned in 2025 may provide evidence on whether these changes result in improved outcomes. PATIENT SUMMARY Prostate-specific membrane antigen positron emission tomography leads to management changes in one-third of patients receiving salvage radiotherapy for post-radical prostatectomy biochemical recurrence of prostate cancer.
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Affiliation(s)
- Wesley R Armstrong
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA; UCLA-Caltech Medical Scientist Training Program, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Amar U Kishan
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA, USA
| | - Kiara M Booker
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Tristan R Grogan
- Department of Medicine Statistics Core (DOMStat), David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - David Elashoff
- Department of Medicine Statistics Core (DOMStat), David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Ethan C Lam
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Kevyn J Clark
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Michael L Steinberg
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA, USA
| | - Wolfgang P Fendler
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA; Department of Nuclear Medicine, University of Duisburg-Essen and German Cancer Consortium (DKTK) - University Hospital Essen, Essen, Germany
| | - Thomas A Hope
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Nicholas G Nickols
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA, USA; Department of Radiation Oncology, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
| | - Johannes Czernin
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA, USA
| | - Jeremie Calais
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA, USA.
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10
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Telarovic I, Yong CSM, Kurz L, Vetrugno I, Reichl S, Fernandez AS, Cheng HW, Winkler R, Guckenberger M, Kipar A, Ludewig B, Pruschy M. Delayed tumor-draining lymph node irradiation preserves the efficacy of combined radiotherapy and immune checkpoint blockade in models of metastatic disease. Nat Commun 2024; 15:5500. [PMID: 38951172 PMCID: PMC11217506 DOI: 10.1038/s41467-024-49873-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 06/21/2024] [Indexed: 07/03/2024] Open
Abstract
Cancer resistance to immune checkpoint inhibitors motivated investigations into leveraging the immunostimulatory properties of radiotherapy to overcome immune evasion and to improve treatment response. However, clinical benefits of radiotherapy-immunotherapy combinations have been modest. Routine concomitant tumor-draining lymph node irradiation (DLN IR) might be the culprit. As crucial sites for generating anti-tumor immunity, DLNs are indispensable for the in situ vaccination effect of radiotherapy. Simultaneously, DLN sparing is often not feasible due to metastatic spread. Using murine models of metastatic disease in female mice, here we demonstrate that delayed (adjuvant), but not neoadjuvant, DLN IR overcomes the detrimental effect of concomitant DLN IR on the efficacy of radio-immunotherapy. Moreover, we identify IR-induced disruption of the CCR7-CCL19/CCL21 homing axis as a key mechanism for the detrimental effect of DLN IR. Our study proposes delayed DLN IR as a strategy to maximize the efficacy of radio-immunotherapy across different tumor types and disease stages.
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Affiliation(s)
- Irma Telarovic
- Laboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Carmen S M Yong
- Laboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Department of Immunology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Lisa Kurz
- Institute of Immunobiology, Medical Research Center, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Irene Vetrugno
- Laboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Sabrina Reichl
- Laboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Alba Sanchez Fernandez
- Laboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Hung-Wei Cheng
- Institute of Immunobiology, Medical Research Center, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Rona Winkler
- Laboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Matthias Guckenberger
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Anja Kipar
- Laboratory for Animal Model Pathology, Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Burkhard Ludewig
- Institute of Immunobiology, Medical Research Center, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Martin Pruschy
- Laboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
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11
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Trapp C, Aebersold DM, Belka C, Casuscelli J, Emmett L, Eze C, Fanti S, Farolfi A, Fendler W, Grosu AL, Guckenberger M, Hruby G, Kirste S, Koerber SA, Kroeze S, Peeken JC, Rogowski P, Scharl S, Shelan M, Spohn SKB, Strouthos I, Unterrainer L, Vogel M, Wiegel T, Zamboglou C, Schmidt-Hegemann NS. Whole pelvis vs. hemi pelvis elective nodal radiotherapy in patients with PSMA-positive nodal recurrence after radical prostatectomy - a retrospective multi-institutional propensity score analysis. Eur J Nucl Med Mol Imaging 2024:10.1007/s00259-024-06802-x. [PMID: 38940843 DOI: 10.1007/s00259-024-06802-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 06/10/2024] [Indexed: 06/29/2024]
Abstract
PURPOSE Despite growing evidence for bilateral pelvic radiotherapy (whole pelvis RT, WPRT) there is almost no data on unilateral RT (hemi pelvis RT, HPRT) in patients with nodal recurrent prostate cancer after prostatectomy. Nevertheless, in clinical practice HPRT is sometimes used with the intention to reduce side effects compared to WPRT. Prostate-specific membrane antigen positron emission tomography / computed tomography (PSMA-PET/CT) is currently the best imaging modality in this clinical situation. This analysis compares PSMA-PET/CT based WPRT and HPRT. METHODS A propensity score matching was performed in a multi-institutional retrospective dataset of 273 patients treated with pelvic RT due to nodal recurrence (214 WPRT, 59 HPRT). In total, 102 patients (51 in each group) were included in the final analysis. Biochemical recurrence-free survival (BRFS) defined as prostate specific antigen (PSA) < post-RT nadir + 0.2ng/ml, metastasis-free survival (MFS) and nodal recurrence-free survival (NRFS) were calculated using the Kaplan-Meier method and compared using the log rank test. RESULTS Median follow-up was 29 months. After propensity matching, both groups were mostly well balanced. However, in the WPRT group there were still significantly more patients with additional local recurrences and biochemical persistence after prostatectomy. There were no significant differences between both groups in BRFS (p = .97), MFS (p = .43) and NRFS (p = .43). After two years, BRFS, MFS and NRFS were 61%, 86% and 88% in the WPRT group and 57%, 90% and 82% in the HPRT group, respectively. Application of a boost to lymph node metastases, a higher RT dose to the lymphatic pathways (> 50 Gy EQD2α/β=1.5 Gy) and concomitant androgen deprivation therapy (ADT) were significantly associated with longer BRFS in uni- and multivariate analysis. CONCLUSIONS Overall, this analysis presents the outcome of HPRT in nodal recurrent prostate cancer patients and shows that it can result in a similar oncologic outcome compared to WPRT. Nevertheless, patients in the WPRT may have been at a higher risk for progression due to some persistent imbalances between the groups. Therefore, further research should prospectively evaluate which subgroups of patients are suitable for HPRT and if HPRT leads to a clinically significant reduction in toxicity.
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Affiliation(s)
- Christian Trapp
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
| | - Daniel M Aebersold
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Claus Belka
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Munich, Germany
| | | | - Louise Emmett
- Department of Theranostics and Nuclear Medicine, St. Vincent's Hospital, Sydney, Australia
- St. Vincent's Clinical School, University of New South Wales, Sydney, Australia
| | - Chukwuka Eze
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Stefano Fanti
- Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Andrea Farolfi
- Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Wolfgang Fendler
- Department of Nuclear Medicine, University Hospital,University of Essen, Essen, Germany
| | - Anca-Ligia Grosu
- Department of Radiation Oncology, Medical Center , University of Freiburg, Freiburg, Germany
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Freiburg, Freiburg, Germany
| | - Matthias Guckenberger
- Department of Radiation Oncology, University Hospital, University of Zurich, Zurich, Switzerland
| | - George Hruby
- Department of Radiation Oncology, Royal North Shore Hospital, University of Sydney, Sydney, Australia
| | - Simon Kirste
- Department of Radiation Oncology, Medical Center , University of Freiburg, Freiburg, Germany
| | - Stefan A Koerber
- Department of Radiation Oncology, Barmherzige Brüder Hospital Regensburg, Regensburg, Germany
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Stephanie Kroeze
- Department of Radiation Oncology, University Hospital, University of Zurich, Zurich, Switzerland
| | - Jan C Peeken
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Munich, Germany
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Paul Rogowski
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sophia Scharl
- Department of Radiation Oncology, University of Ulm, Ulm, Germany
| | - Mohamed Shelan
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Simon K B Spohn
- Department of Radiation Oncology, Medical Center , University of Freiburg, Freiburg, Germany
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Freiburg, Freiburg, Germany
- Berta-Ottenstein-Programm, Medical Faculty, University of Freiburg, Freiburg, Germany
| | - Iosif Strouthos
- Department of Radiation Oncology, German Oncology Center, European University Cyprus, Nicosia, Cyprus
| | - Lena Unterrainer
- Department of Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, UCLA, Los Angeles, USA
| | - Marco Vogel
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Munich, Germany
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Thomas Wiegel
- Department of Radiation Oncology, University of Ulm, Ulm, Germany
| | - Constantinos Zamboglou
- Department of Radiation Oncology, Medical Center , University of Freiburg, Freiburg, Germany
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Freiburg, Freiburg, Germany
- Department of Radiation Oncology, German Oncology Center, European University Cyprus, Nicosia, Cyprus
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12
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Canales JP, Barnafi E, Salazar C, Reyes P, Merino T, Calderón D, Cortés A. Moderate hypofractionated radiotherapy to the prostate bed with or without pelvic lymph nodes: a prospective trial. Rep Pract Oncol Radiother 2024; 29:187-196. [PMID: 39143977 PMCID: PMC11321776 DOI: 10.5603/rpor.99677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/29/2024] [Indexed: 08/16/2024] Open
Abstract
Background Hypofractionated radiotherapy in the treatment of prostate cancer has been widely studied. However, in the postoperative setting it has been less explored. The objective of this prospective study is to evaluate the safety and efficacy of hypofractionated radiotherapy in postoperative prostate cancer. Materials and methods A prospective study was designed to include patients with prostate cancer with an indication of postoperative radiotherapy as adjuvant or salvage. A hypofractionated radiotherapy scheme of 51 Gy in 17 fractions was performed with the possibility of treating the pelvis at a dose of 36 Gy in 12 fractions sequentially. Safety was evaluated based on acute and late toxicity [according to the Radiation Therapy Oncology Group (RTOG) scale and Common Terminology Criteria Adverse Events (CTCAE) v4.03], International Prognostic Scoring System (IPSS) over time, and quality of life. Results From August 2020 to June 2022, 31 patients completed treatment and were included in this report. 35.5% of patients received elective treatment of the pelvic nodal areas. Most patients reported minimal or low acute toxicity, with an acute gastrointestinal (GI) and genitourinary (GU) grade 3 or greater toxicity of 3.2% and 0%, respectively. The evolution in time of the IPSS remained without significant differences (p = 0.42). With the exception of a significant improvement in the domains of hormonal and sexual symptoms of the Expanded Prostate Cancer Index Composite (EPIC) questionnaire, the rest of the domains [EPIC, European Organization for Research and Treatment of Cancer (EORTC) Core quality of life questionnaire (C-30) and Prostate Cancer module (PR-25)] were maintained without significant differences over time. With a follow-up of 15.4 months, late GI and GU grade 2 toxicity was reported greater than 0% and 9.6%, respectively. Conclusions Hypofractionated radiotherapy in postoperative prostate cancer appears to be safe with low reports of relevant acute or late toxicity. Further follow-up is required to confirm these results. Trial registration The protocol was approved by the accredited Medical Ethical Committee of Pontificia Universidad Católica de Chile. All participants accepted and wrote informed consent.
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Affiliation(s)
- Juan P. Canales
- Department of Hemato-oncology, Radiotherapy, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
| | - Esteban Barnafi
- Medicine School, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
| | - Cristian Salazar
- Medicine School, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
| | - Paula Reyes
- Department of Hemato-oncology, Radiotherapy, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
| | - Tomas Merino
- Department of Hemato-oncology, Radiotherapy, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
| | - David Calderón
- Department of Urology, Hospital del Salvador, Santiago de Chile, Chile
| | - Analía Cortés
- Department of Oncology, Hospital del Salvador, Santiago de Chile, Chile
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13
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Scharl S, Zamboglou C, Strouthos I, Farolfi A, Serani F, Koerber SA, Debus J, Peeken JC, Vogel MME, Kroeze SGC, Guckenberger M, Krafcsik M, Hruby G, Emmett L, Schmidt-Hegemann NS, Trapp C, Spohn SKB, Henkenberens C, Mayer B, Shelan M, Aebersold DM, Thamm R, Wiegel T. European association of urology risk stratification predicts outcome in patients receiving PSMA-PET-planned salvage radiotherapy for biochemical recurrence following radical prostatectomy. Radiother Oncol 2024; 194:110215. [PMID: 38458259 DOI: 10.1016/j.radonc.2024.110215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
PURPOSE The European Association of Urology (EAU) proposed a risk stratification (high vs. low risk) for patients with biochemical recurrence (BR) following radical prostatectomy (RP). Here we investigated whether this stratification accurately predicts outcome, particularly in patients staged with PSMA-PET. METHODS For this study, we used a retrospective database including 1222 PSMA-PET-staged prostate cancer patients who were treated with salvage radiotherapy (SRT) for BR, at 11 centers in 5 countries. Patients with lymph node metastases (pN1 or cN1) or unclear EAU risk group were excluded. The remaining cohort comprised 526 patients, including 132 low-risk and 394 high-risk patients. RESULTS The median follow-up time after SRT was 31.0 months. The 3-year biochemical progression-free survival (BPFS) was 85.7 % in EAU low-risk versus 69.4 % in high-risk patients (p = 0.002). The 3-year metastasis-free survival (MFS) was 94.4 % in low-risk versus 87.6 % in high-risk patients (p = 0.005). The 3-year overall survival (OS) was 99.0 % in low-risk versus 99.6 % in high-risk patients (p = 0.925). In multivariate analysis, EAU risk group remained a statistically significant predictor of BPFS (p = 0.003, HR 2.022, 95 % CI 1.262-3.239) and MFS (p = 0.013, HR 2.986, 95 % CI 1.262-7.058). CONCLUSION Our data support the EAU risk group definition. EAU risk grouping for BCR reliably predicted outcome in patients staged lymph node-negative after RP and with PSMA-PET before SRT. To our knowledge, this is the first study validating the EAU risk grouping in patients treated with PSMA-PET-planned SRT.
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Affiliation(s)
- Sophia Scharl
- Department of Radiation Oncology, University Hospital Ulm, Germany.
| | - Constantinos Zamboglou
- Department of Radiation Oncology, Medical Center -Faculty of Medicine, University of Freiburg, Germany
| | - Iosif Strouthos
- Department of Radiation Oncology, German Oncology Center, University Hospital of the European University, Limassol, Cyprus
| | - Andrea Farolfi
- Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Francesca Serani
- Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Stefan A Koerber
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Department of Radiation Oncology, Barmherzige Brüder Hospital Regensburg, Regensburg, Germany
| | - Jürgen Debus
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Jan C Peeken
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Germany
| | - Marco M E Vogel
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Germany
| | | | | | - Manuel Krafcsik
- Department of Radiation Oncology, University Hospital Ulm, Germany
| | - George Hruby
- Department of Radiation Oncology, Royal North Shore Hospital - University of Sydney, Australia
| | - Louise Emmett
- St Vincent's Clinical School, University of New South Wales, Sydney, Australia
| | - Nina-Sophie Schmidt-Hegemann
- Department of Department of Radiotherapy and Oncology, University Hospital, LMU Munich, Germany; German Cancer Consortium (DKTK), Partner Site Munich, 81377 Munich, Germany; Bavarian Cancer Research Center (BZKF), Munich, Germany
| | - Christian Trapp
- Department of Department of Radiotherapy and Oncology, University Hospital, LMU Munich, Germany
| | - Simon K B Spohn
- Department of Radiation Oncology, Medical Center -Faculty of Medicine, University of Freiburg, Germany
| | - Christoph Henkenberens
- Department of Radiotherapy and Special Oncology, Medical School Hannover, Hannover, Germany
| | - Benjamin Mayer
- Institute for Epidemiology and Medical Biometry, University Ulm, Ulm, Germany
| | - Mohamed Shelan
- Department of Radiation Oncology, Inselspital Bern, Bern University Hospital, University of Bern, Switzerland
| | - Daniel M Aebersold
- Department of Radiation Oncology, Inselspital Bern, Bern University Hospital, University of Bern, Switzerland
| | - Reinhard Thamm
- Department of Radiation Oncology, University Hospital Ulm, Germany
| | - Thomas Wiegel
- Department of Radiation Oncology, University Hospital Ulm, Germany
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Leow BYJ, Eade T, Hruby G, Lieng H, Hsiao E, Brown C, Kneebone A. Prognostic impact of prostate-specific membrane antigen positron emission tomography (PSMA PET) staging for clinically node-positive prostate cancer. J Med Imaging Radiat Oncol 2024. [PMID: 38618900 DOI: 10.1111/1754-9485.13655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 04/03/2024] [Indexed: 04/16/2024]
Abstract
INTRODUCTION In the current American Joint Committee on Cancer staging system, patients with pelvic nodal metastases are considered stage IV prostate cancer. This study aims to investigate whether men with prostate-specific membrane antigen positron emission tomography (PSMA PET)-detected pelvic node-positive prostate cancer at diagnosis have a better outcome compared to men with node-positive disease identified on conventional imaging. METHODS This is a retrospective cohort study comparing the outcomes of men with node-positive prostate cancer and disease confined to the pelvis, staged with conventional versus PSMA PET imaging. Men had to be treated definitively with a combination of androgen deprivation therapy and radiation treatment to the prostate and pelvic lymph nodes. Kaplan-Meier and Cox regression analysis was used to compare biochemical failure-free survival (BFFS) and overall survival (OS). RESULTS Seventy-six men with nodal metastases confined to the pelvis were identified. Fifty-one were detected with PSMA PET while 25 were staged with conventional imaging. PSMA PET staged patients had a lower proportion of Gleason 8-10 disease (78% vs. 96%) as well as a lower median prostate-specific antigen (11 ng/mL vs. 26 ng/mL). BFFS at 4 years was 72% with PSMA PET-detected node-positive disease vs. 38% with conventionally detected node-positive disease. Four-year OS was 93% with PSMA PET staged patients vs. 76% with conventionally staged patients. On multivariate analysis, the PSMA PET staged group was associated with improved BFFS (Adjusted HR = 3.00, 95% CI 1.43, 6.29, P = 0.004) and OS (Adjusted HR = 5.81, 95% CI 1.43, 23.7, P = 0.007). CONCLUSION Men with PSMA PET-detected node-positive prostate cancer confined to the pelvis have significantly better biochemical control and survival compared to those with node-positive pelvic disease identified through conventional staging.
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Affiliation(s)
| | - Thomas Eade
- Central Coast Cancer Centre, Gosford Hospital, Gosford, New South Wales, Australia
- Northern Sydney Cancer Centre, Radiation Oncology Unit, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - George Hruby
- Northern Sydney Cancer Centre, Radiation Oncology Unit, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Hester Lieng
- Central Coast Cancer Centre, Gosford Hospital, Gosford, New South Wales, Australia
| | - Edward Hsiao
- Department of Nuclear Medicine and PET, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Chris Brown
- Northern Sydney Cancer Centre, Radiation Oncology Unit, Royal North Shore Hospital, Sydney, New South Wales, Australia
- National Health and Medical Research Council, Clinical Trials Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Andrew Kneebone
- Central Coast Cancer Centre, Gosford Hospital, Gosford, New South Wales, Australia
- Northern Sydney Cancer Centre, Radiation Oncology Unit, Royal North Shore Hospital, Sydney, New South Wales, Australia
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Lee TH, Pyo H, Yoo GS, Jeon SS, Seo SI, Jeong BC, Jeon HG, Sung HH, Kang M, Song W, Chung JH, Bae BK, Park W. Hypofractionated radiation therapy combined with androgen deprivation therapy for high-risk localized prostate cancer. J Med Imaging Radiat Oncol 2024; 68:333-341. [PMID: 38477380 DOI: 10.1111/1754-9485.13639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 03/03/2024] [Indexed: 03/14/2024]
Abstract
INTRODUCTION This study aimed to analyse the treatment outcomes of moderately hypofractionated radiation therapy (RT) combined with androgen deprivation therapy (ADT) and the prognostic implications of prostate-specific antigen (PSA) kinetics in high-risk localized prostate cancer. METHODS The medical records of 140 patients who underwent definitive RT (70 Gy in 28 fractions) combined with ADT were retrospectively reviewed. ADT consists of a gonadotropin-releasing hormone agonist and an anti-androgen. Clinical outcomes included the biochemical failure rate (BFR), clinical failure rate (CFR), overall survival (OS) and prostate cancer-specific survival (PCSS). The BFR and CFR were stratified by the PSA nadir and the time to the PSA nadir, respectively. Acute and late genitourinary and gastrointestinal adverse events were also recorded. RESULTS The 5-year BFR, CFR, OS and PCSS rates were 9.8%, 4.5%, 90.2% and 98.7%, respectively. Ninety-five (67.9%) patients achieved a PSA nadir of 0.01 ng/mL. Patients with a PSA nadir >0.01 ng/mL had a significantly higher BFR and CFR (BFR, P = 0.001; CFR, P = 0.027), even after adjusting for other prognostic factors [per 0.1 ng/mL; BFR, hazard ratio (HR) 4.440, P < 0.001; CFR, HR 4.338, P = 0.001]. However, the time to the PSA nadir and pre-RT PSA were not significantly associated with the BFR and CFR. Six patients (4.3%) reported grade 3 late adverse events, mostly haematuria and haematochezia. CONCLUSION Definitive RT with moderate hypofractionation combined with long-term ADT showed good efficacy for high-risk localized prostate cancer. The lowest PSA nadir was significantly associated with a low recurrence rate, indicating the importance of PSA follow-up.
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Affiliation(s)
- Tae Hoon Lee
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hongryull Pyo
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Gyu Sang Yoo
- Department of Radiation Oncology, Chungbuk National University Hospital, Cheongju, Korea
| | - Seong Soo Jeon
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seong Il Seo
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byong Chang Jeong
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hwang Gyun Jeon
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyun Hwan Sung
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Minyong Kang
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Wan Song
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jae Hoon Chung
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Bong Kyung Bae
- Department of Radiation Oncology, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Won Park
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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16
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Fink CA, Wegener D, Sauer LD, Lentz-Hommertgen A, Liermann J, Müller AC, Zips D, Debus J, Herfarth K, Koerber SA. Pelvic Irradiation for Node-Positive Prostate Cancer After Prostatectomy: Long-Term Results of the Prospective PLATIN-4 and PLATIN-5 Trials. Int J Radiat Oncol Biol Phys 2024; 118:1011-1017. [PMID: 37863242 DOI: 10.1016/j.ijrobp.2023.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/26/2023] [Accepted: 10/08/2023] [Indexed: 10/22/2023]
Abstract
PURPOSE After radical prostatectomy (RP), adjuvant or salvage radiation treatment in node-positive prostate cancer is offered to prevent systemic disease. Prospective long-term survival and toxicity data on patients with radiation for nodal disease are still scarce. This study evaluates safety and feasibility of salvage radiation therapy to the pelvic lymph nodes in node-positive prostate cancer after RP. METHODS AND MATERIALS Between 2009 and 2018, 78 patients with lymph node recurrence after RP (PLATIN-4 trial) or after RP and prostate bed radiation therapy (PLATIN-5 trial) were treated with salvage pelvic lymph node radiation therapy with boost to the involved nodes as field abutment (PLATIN-5) and boost to the prostate bed (PLATIN-4). Androgen deprivation therapy was started 2 months before radiation and recommended for 24 months. The primary endpoint was safety and feasibility of the intensity modulated radiation therapy-image guided radiation therapy technique based on the rate of treatment discontinuations and incidence of Common Terminology Criteria for Adverse Events grade 3+ toxicity. Secondary endpoints were progression-free survival and overall survival. RESULTS No treatment discontinuations were reported in either trial. Median overall survival was not reached in PLATIN-4 and was 117 months in PLATIN-5. Median progression-free survival was 66 months in PLATIN-4 and 39 months in PLATIN-5. Late grade 3+ genitourinary and gastrointestinal toxicities were observed in 4% of patients at 24 months of follow-up. CONCLUSIONS Salvage radiation therapy to the prostate bed and pelvic lymphatic drainage combined with long-term androgen deprivation therapy is a curative treatment option for patients with node-positive prostate cancer after RP, with excellent in-field disease control. Pelvic lymph node radiation therapy as field abutment after prostate bed radiation therapy is feasible with long-term survival and no high-grade toxicity.
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Affiliation(s)
- Christoph A Fink
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Heidelberg Institute for Radiation Oncology, National Center for Radiation Research in Oncology, Heidelberg, Germany; National Center for Tumor Diseases, Heidelberg, Germany.
| | - Daniel Wegener
- Department of Radiation Oncology, University Hospital Tuebingen, Tuebingen, Germany
| | - Lukas D Sauer
- University of Heidelberg, Institute of Medical Biometry and Informatics, Heidelberg, Germany
| | - Adriane Lentz-Hommertgen
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Heidelberg Institute for Radiation Oncology, National Center for Radiation Research in Oncology, Heidelberg, Germany
| | - Jakob Liermann
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Heidelberg Institute for Radiation Oncology, National Center for Radiation Research in Oncology, Heidelberg, Germany; National Center for Tumor Diseases, Heidelberg, Germany
| | | | - Daniel Zips
- Department of Radiation Oncology, University Hospital Tuebingen, Tuebingen, Germany
| | - Juergen Debus
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Heidelberg Institute for Radiation Oncology, National Center for Radiation Research in Oncology, Heidelberg, Germany; National Center for Tumor Diseases, Heidelberg, Germany; Clinical Cooperation Unit, German Cancer Research Center, Heidelberg, Germany; Heidelberg Ion Beam Therapy Center, Heidelberg, Germany
| | - Klaus Herfarth
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Heidelberg Institute for Radiation Oncology, National Center for Radiation Research in Oncology, Heidelberg, Germany; National Center for Tumor Diseases, Heidelberg, Germany; Heidelberg Ion Beam Therapy Center, Heidelberg, Germany
| | - Stefan A Koerber
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Heidelberg Institute for Radiation Oncology, National Center for Radiation Research in Oncology, Heidelberg, Germany; National Center for Tumor Diseases, Heidelberg, Germany; Department of Radiation Oncology, Barmherzige Brueder Hospital Regensburg, Regensburg, Germany
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17
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Mohamad O, Zamboglou C, Zilli T, Murthy V, Aebersold DM, Loblaw A, Guckenberger M, Shelan M. Safety of Ultrahypofractionated Pelvic Nodal Irradiation in the Definitive Management of Prostate Cancer: Systematic Review and Meta-analysis. Int J Radiat Oncol Biol Phys 2024; 118:998-1010. [PMID: 37863241 DOI: 10.1016/j.ijrobp.2023.09.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/15/2023] [Accepted: 09/29/2023] [Indexed: 10/22/2023]
Abstract
PURPOSE This systematic review and meta-analysis aimed to evaluate the evidence for ultrahypofractionated pelvic nodal irradiation in patients with prostate cancer, with a focus on reported acute and late toxicities. METHODS AND MATERIALS A comprehensive search was conducted in 5 electronic databases (PubMed, Scopus, Web of Science, Cochrane Library, ClinicalTrials.gov) from inception until March 23, 2023. Eligible publications included patients with intermediate- and high-risk and node-positive prostate cancer who underwent elective or therapeutic ultrahypofractionated pelvic nodal irradiation. Primary outcomes included the presence of grade ≥2 rates of acute and late gastrointestinal and genitourinary toxicity based on the Common Terminology Criteria for Adverse Events or Radiation Therapy Oncology Group scales. Quality assessment was performed using National Institutes of Health tools for noncontrolled beforeand after (single arm) clinical trials, as well as single-arm observational studies. Because all outcomes were categorical variables, proportion was calculated to estimate the effect size and compare the outcomes after the intervention. RESULTS We identified 16 publications that reported the use of ultrahypofractionated radiation therapy to treat the pelvis in prostate cancer. Seven publications met our criteria and were included in the meta-analysis, including 417 patients. The median total dose to the pelvic lymph nodes was 25 Gy (range, 25-28.5 Gy), with a median of 5 fractions. The prostate received a median dose of 40 Gy (range, 35-47.5 Gy). All studies used androgen deprivation therapy for a median duration of 18 months. The median follow-up period was 3 years (range, 0.5-5.6 years). The rates of acute grade ≥2 gastrointestinal and genitourinary toxicity were 8% (95% CI, 1%-15%) and 29% (95% CI, 18%-41%), respectively. For late grade ≥2 gastrointestinal and genitourinary toxicity, the rates were 13% (95% CI, 5%-21%) and 29% (95% CI, 17%-42%), respectively. CONCLUSIONS Ultrahypofractionated pelvic nodal irradiation appears to be a safe approach in terms of acute and late genitourinary and gastrointestinal toxicity.
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Affiliation(s)
- Osama Mohamad
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Constantinos Zamboglou
- Department of Radiation Oncology, Medical Center - Uwniversity of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; German Oncology Center, European University Cyprus, Limassol, Cyprus
| | - Thomas Zilli
- Department of Radiation Oncology, Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland; Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland; Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Vedang Murthy
- Department of Radiation Oncology, ACTREC, Tata Memorial Centre and Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Daniel M Aebersold
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Andrew Loblaw
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Matthias Guckenberger
- Department of Radiation Oncology, University Hospital Zürich, University of Zurich, Zurich, Switzerland
| | - Mohamed Shelan
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Switzerland.
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18
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Moll M, Goldner G. Assessing the toxicity after moderately hypofractionated prostate and whole pelvis radiotherapy compared to conventional fractionation. Strahlenther Onkol 2024; 200:188-194. [PMID: 37341774 PMCID: PMC10876811 DOI: 10.1007/s00066-023-02104-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/19/2023] [Indexed: 06/22/2023]
Abstract
OBJECTIVE To evaluate acute and late gastrointestinal (GI) and genitourinary (GU) toxicities after moderately hypofractionated (HF) or conventionally fractionated (CF) primary whole-pelvis radiotherapy (WPRT). METHODS Primary prostate-cancer patients treated between 2009 and 2021 with either 60 Gy at 3 Gy/fraction to the prostate and 46 Gy at 2.3 Gy/fraction to the whole pelvis (HF), or 78 Gy at 2 Gy/fraction to the prostate and 50/50.4 Gy at 1.8-2 Gy/fraction to the whole pelvis (CF). Acute and late GI and GU toxicities were retrospectively assessed. RESULTS 106 patients received HF and 157 received CF, with a median follow-up of 12 and 57 months. Acute GI toxicity rates in the HF and CF groups were, respectively, grade 2: 46.7% vs. 37.6%, and grade 3: 0% vs. 1.3%, with no significant difference (p = 0.71). Acute GU toxicity rates were, respectively, grade 2: 20.0% vs. 31.8%, and grade 3: 2.9% vs. 0%, (p = 0.04). We compared prevalence of late GI and GU toxicities between groups after 3, 12, and 24 months and did not find any significant differences (respectively, p = 0.59, 0.22, and 0.71 for GI toxicity; p = 0.39, 0.58, and 0.90 for GU toxicity). CONCLUSION Moderate HF WPRT was well tolerated during the first 2 years. Randomized trials are needed to confirm these findings.
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Affiliation(s)
- Matthias Moll
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, A-1090, Vienna, Austria.
| | - Gregor Goldner
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, A-1090, Vienna, Austria
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19
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Sarria GR, Kugel F, Roehner F, Layer J, Dejonckheere C, Scafa D, Koeksal M, Leitzen C, Schmeel LC. Artificial Intelligence-Based Autosegmentation: Advantages in Delineation, Absorbed Dose-Distribution, and Logistics. Adv Radiat Oncol 2024; 9:101394. [PMID: 38292888 PMCID: PMC10823084 DOI: 10.1016/j.adro.2023.101394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 10/09/2023] [Indexed: 02/01/2024] Open
Abstract
Purpose The study's purpose was to compare the performance of artificial intelligence (AI) in auto-contouring compared with a human practitioner in terms of precision, differences in dose distribution, and time consumption. Methods and Materials Datasets of previously irradiated patients in 3 different segments (head and neck, breast, and prostate cancer) were retrospectively collected. An experienced radiation oncologist (MD) performed organs-at-risk (OARs) and standard clinical target volume delineations as baseline structures for comparison. AI-based autocontours were generated in 2 additional CT copies; therefore, 3 groups were assessed: MD alone, AI alone, and AI plus MD corrections (AI+C). Differences in Dice similarity coefficient (DSC) and person-hour burden were assessed. Furthermore, changes in clinically relevant dose-volume parameters were evaluated and compared. Results Seventy-five previously treated cases were collected (25 per segment) for the analysis. Compared with MD contours, the mean DSC scores were higher than 0.7 for 74% and 80% of AI and AI+C, respectively. After corrections, 17.1% structures presented DSC score deviations higher than 0.1 and 10.4% dose-volume parameters significantly changed in AI-contoured structures. The time consumption assessment yielded mean person-hour reductions of 68%, 51%, and 71% for breast, prostate, and head and neck cancer, respectively. Conclusions In great extent, AI yielded clinically acceptable OARs and certain clinical target volumes in the explored anatomic segments. Sparse correction and assessment requirements place AI+C as a standard workflow. Minimal clinically relevant differences in OAR exposure were identified. A substantial amount of person-hours could be repurposed with this technology.
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Affiliation(s)
| | | | | | - Julian Layer
- Department of Radiation Oncology
- Institute of Experimental Oncology, University Hospital Bonn, University of Bonn, Bonn, Germany
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20
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De Hertogh O, Le Bihan G, Zilli T, Palumbo S, Jolicoeur M, Crehange G, Derashodian T, Roubaud G, Salembier C, Supiot S, Chapet O, Achard V, Sargos P. Consensus Delineation Guidelines for Pelvic Lymph Node Radiation Therapy of Prostate Cancer: On Behalf of the Francophone Group of Urological Radiation Therapy (GFRU). Int J Radiat Oncol Biol Phys 2024; 118:29-40. [PMID: 37506982 DOI: 10.1016/j.ijrobp.2023.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/01/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023]
Abstract
PURPOSE Clinical target volume (CTV) delineation for pelvic lymph nodes in prostate cancer is currently based on 3 consensus guidelines with some inherent discrepancies. To improve the reproducibility in nodal delineation, the Francophone Group of Urological Radiotherapy (Groupe Francophone de Radiothérapie Urologique [GFRU]) worked toward proposing an easily applicable, reproducible, and practice-validated contouring guideline for pelvic nodal CTV. METHODS AND MATERIALS The nodal CTV data sets of a high-risk node-negative prostate cancer clinical case contoured by 86 radiation oncologists participating in a GFRU contouring workshop were analyzed. CTV volumes were defined before and after a structured presentation of literature data on lymphatic drainage pathways and patterns of nodal involvement and relapse, illustrated using a reference contour (CRef) defined by 3 GFRU experts. The consistency between the participants' contours and CRef was assessed quantitively by means of the Simultaneous Truth and Performance Level Estimation (STAPLE) method, the Dice coefficient, and the Hausdorff distance and qualitatively using a count map. These results combined with the literature review were thoroughly discussed among GFRU experts to reach a consensus. RESULTS From the 86 workshop participants, the volume of the STAPLE CTV was 591 cc compared with 502 cc for CRef. The Dice coefficient of the STAPLE CTV compared with the experts' CRef was 0.736 (±0.084) before and 0.823 (±0.070) after the workshop; the standard deviation decreased from 11.5% to 8.5% over the workshop. The Hausdorff distance of the STAPLE CTV compared with the CRef was 34.5 mm (±12.4) before the workshop and 21.8 mm (±9.3) after the workshop. Four areas of significant interobserver variability were identified, and a consensus was reached. CONCLUSIONS Using a robust methodology, our cooperative group proposed an easily applicable, reproducible, and practice-validated guideline for the delineation of the pelvic CTV in prostate cancer, useful for implementation in daily practice and clinical trials.
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Affiliation(s)
- Olivier De Hertogh
- Radiation Oncology Department, CHR Verviers East Belgium, Verviers, Belgium.
| | | | - Thomas Zilli
- Radiation Oncology, Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland; Università della Svizzera Italiana, Lugano, Switzerland; Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Samuel Palumbo
- Radiation Oncology Department, Hôpital de Jolimont, La Louvière, Belgium
| | - Marjory Jolicoeur
- Radiation Oncology Department, Charles LeMoyne Hospital, CISSS Montérégie-center, Montréal, Quebec, Canada
| | - Gilles Crehange
- Radiation Oncology Department, Institut Curie, Saint-Cloud, France
| | - Talar Derashodian
- Radiation Oncology Department, Charles LeMoyne Hospital, CISSS Montérégie-center, Montréal, Quebec, Canada
| | - Guilhem Roubaud
- Medical Oncology Department, Institut Bergonié, Bordeaux, France
| | - Carl Salembier
- Radiation Oncology Department, Europe Hospitals Brussels, Brussels, Belgium
| | - Stéphane Supiot
- Radiation Oncology Department, Institut de Cancérologie de l'Ouest, Nantes Saint-Herblain, France; Unité en Sciences Biologiques et Biotechnologies, University of Nantes, Nantes, France
| | - Olivier Chapet
- Radiation Oncology Department, Center Hospitalier Lyon Sud, Pierre Benite, France
| | - Verane Achard
- Faculty of Medicine, University of Geneva, Geneva, Switzerland; Department of Radiation Oncology, HFR Fribourg, Villars-sur-Glâne, Switzerland
| | - Paul Sargos
- Radiation Oncology Department, Institut Bergonié, Bordeaux, France; Department of Radiation Oncology, McGill University Health Centre, Montréal, Quebec, Canada
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21
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Ah-Thiane L, Sargos P, Chapet O, Jolicoeur M, Terlizzi M, Salembier C, Boustani J, Prevost C, Gaudioz S, Derashodian T, Palumbo S, De Hertogh O, Créhange G, Zilli T, Supiot S. Managing postoperative biochemical relapse in prostate cancer, from the perspective of the Francophone group of Urological radiotherapy (GFRU). Cancer Treat Rev 2023; 120:102626. [PMID: 37734178 DOI: 10.1016/j.ctrv.2023.102626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 09/23/2023]
Abstract
Up to 50% of patients treated with radical surgery for localized prostate cancer may experience biochemical recurrence that requires appropriate management. Definitions of biochemical relapse may vary, but, in all cases, consist of an increase in a PSA without clinical or radiological signs of disease. Molecular imaging through to positron emission tomography has taken a preponderant place in relapse diagnosis, progressively replacing bone scan and CT-scan. Prostate bed radiotherapy is currently a key treatment, the action of which should be potentiated by androgen deprivation therapy. Nowadays perspectives consist in determining the best combination therapies, particularly thanks to next-generation hormone therapies, but not exclusively. Several trials are ongoing and should address these issues. We present here a literature review aiming to discuss the current management of biochemical relapse in prostate cancer after radical surgery, in lights of recent findings, as well as future perspectives.
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Affiliation(s)
- Loic Ah-Thiane
- Department of Radiation Oncology, ICO René Gauducheau, St-Herblain, France
| | - Paul Sargos
- Department of Radiation Oncology, Bergonie Institute, Bordeaux, France
| | - Olivier Chapet
- Department of Radiation Oncology, CHU Lyon Sud, Pierre-Bénite, France
| | - Marjory Jolicoeur
- Department of Radiation Oncology, Charles Le Moyne Hospital, Montreal, Canada
| | - Mario Terlizzi
- Department of Radiation Oncology, Gustave Roussy Cancer Center, Villejuif, France
| | - Carl Salembier
- Department of Radiation Oncology, Europe Hospitals Brussels, Belgium
| | - Jihane Boustani
- Department of Radiation Oncology, CHU Besançon, Besançon, France
| | - Célia Prevost
- Department of Radiation Oncology, CHU Lyon Sud, Pierre-Bénite, France
| | - Sonya Gaudioz
- Department of Radiation Oncology, CHU Lyon Sud, Pierre-Bénite, France
| | - Talar Derashodian
- Department of Radiation Oncology, Sindi Ahluwalia Hawkins Centre, Kelowna, Canada
| | - Samuel Palumbo
- Department of Radiation Oncology, CHU UCL Namur-Sainte Elisabeth, Namur, Belgium
| | - Olivier De Hertogh
- Department of Radiation Oncology, CHR Verviers East Belgium, Verviers, Belgium
| | - Gilles Créhange
- Department of Radiation Oncology, Curie Institute, Saint-Cloud, France
| | - Thomas Zilli
- Department of Radiation Oncology, Geneva University Hospital, Geneva, Switzerland
| | - Stéphane Supiot
- Department of Radiation Oncology, ICO René Gauducheau, St-Herblain, France.
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22
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Saripalli AL, Lee B, Adams W, Bhandare N, Venkatesulu BP, Yoo RK, Price J, Harmon GA, Block AM, Friedman N, Harkenrider MM, Major EJ, Small W, Wagner RH, Welsh JS, Solanki AA. Multi-institutional Development and Validation of Contouring Guidelines for Para-aortic Elective Nodal Irradiation in Prostate Cancer Based on Patterns of Involvement on Targeted Molecular Imaging Positron Emission Tomography/Computed Tomography. Int J Radiat Oncol Biol Phys 2023; 117:630-640. [PMID: 37201758 DOI: 10.1016/j.ijrobp.2023.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/07/2023] [Accepted: 05/08/2023] [Indexed: 05/20/2023]
Abstract
PURPOSE Molecular imaging better identifies anatomic regions of metastatic spread of prostate cancer compared with conventional imaging, resulting in para-aortic (PA) nodal metastases being increasingly identified. Consequently, some radiation oncologists electively treat the PA lymph node region in patients with gross or high risk of PA nodal involvement. The anatomic locations of at-risk PA lymph nodes for prostate cancer are unknown. Our objective was to use molecular imaging to develop guidelines for the optimal delineation of the PA clinical target volume (CTV) in patients with prostate cancer. METHODS AND MATERIALS We conducted a multi-institutional retrospective cohort study of patients with prostate cancer undergoing 18F-fluciclovine or 18F-DCFPyL prostate-specific membrane antigen positron emission tomography (PET)/computed tomography (CT). Images of patients with PET-positive PA nodes were imported into the treatment planning system, avid nodes were contoured, and measurements were taken in relation to anatomic landmarks. A contouring guideline that encompassed the location of ≥95% of PET-positive PA nodes was created using descriptive statistics and then validated in an independent data set. RESULTS Five hundred fifty-nine patients had molecular PET/CT imaging in the development data set (78% 18F-fluciclovine, 22% prostate-specific membrane antigen). Seventy-six patients (14%) had evidence of PA nodal metastasis. We determined that expanding the CTV to 1.8 cm left of the aorta, 1.4 cm right of the inferior vena cava (IVC), 7 mm posterior to the aorta/IVC or to the vertebral body, and superiorly to the T11/T12 vertebral interface, with the anterior border 4 mm anterior to the aorta/IVC and inferior border at the bifurcation of the aorta/IVC, resulted in coverage of ≥95% of PET-positive PA nodes. When the guideline was used in the independent validation data set (246 patients with molecular PET/CT imaging, of whom 31 had PA nodal metastasis), 97% of nodes were encompassed, thereby validating our guideline. CONCLUSIONS We used molecular PET/CT imaging to determine the anatomic locations of PA metastases to develop contouring guidelines for creating a prostate cancer PA CTV. Although the optimal patient selection and clinical benefits of PA radiation therapy remain uncertain, our results will aid in delineating the optimal target when PA radiation therapy is pursued.
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Affiliation(s)
- Anjali L Saripalli
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois; Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Brian Lee
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois
| | - William Adams
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois
| | - Niranjan Bhandare
- Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Bhanu P Venkatesulu
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois; Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Ryan K Yoo
- Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Jennifer Price
- Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Grant A Harmon
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois; Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Alec M Block
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois; Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Nicholas Friedman
- Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Matthew M Harkenrider
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois; Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Erica J Major
- Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - William Small
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois; Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Robert H Wagner
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois
| | - James S Welsh
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois; Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois
| | - Abhishek A Solanki
- Department of Radiation Oncology, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois; Department of Radiation Oncology, Edward Hines Jr VA Hospital, Hines, Illinois.
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23
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Lorton O, Achard V, Koutsouvelis N, Jaccard M, Vanhoutte F, Dipasquale G, Ost P, Zilli T. Elective Nodal Irradiation for Oligorecurrent Nodal Prostate Cancer: Interobserver Variability in the PEACE V-STORM Randomized Phase 2 Trial. Adv Radiat Oncol 2023; 8:101290. [PMID: 38047214 PMCID: PMC10692293 DOI: 10.1016/j.adro.2023.101290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 06/05/2023] [Indexed: 12/05/2023] Open
Abstract
Purpose Consistency in delineation of pelvic lymph node regions for prostate cancer elective nodal radiation therapy is still challenging despite current guidelines. The aim of this study was to evaluate the interobserver variability in elective lymph node delineation in the PEACE V - STORM randomized phase 2 trial for oligorecurrent nodal prostate cancer. Methods and Materials Twenty-three centers were asked to delineate the elective pelvic nodal clinical target volume (CTV) of a postoperative oligorecurrent nodal prostate cancer benchmark case using a modified Radiation Therapy Oncology Group (RTOG) 2009 template (upper limit at the L4/L5 interspace). Overall, intersection and overflow volumes, Dice coefficient, Hausdorff distance, and count maps merged with computed tomography images were analyzed. Results The mean volume including the 23 nodal CTVs was 430.4 ± 64.1 cm3, larger than the modified RTOG 2009 CTV reference volume (386.1 cm3). The intersection common volume between the modified reference RTOG 2009 and the 23 nodal CTVs was estimated at 83.9%, whereas the overflow volume was 23.4%, mainly located at the level of the presacral and the upper limit of the L4/L5 interspace. The mean Dice coefficient was 0.79 ± 0.02, whereas the mean Hausdorff distance was 27 ± 4.4 mm. Conclusions In salvage radiation therapy treatment of oligorecurrent nodal prostate cancer, variations in elective lymph node volume delineation were mainly observed in the presacral and common iliac areas. Routine implementation and diffusion of available contouring guidelines together with a constant evaluation and evidence-based updating are expected to further decrease the existing variability in pelvic node contouring.
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Affiliation(s)
- Orane Lorton
- Department of Radiology, Geneva University Hospital, Geneva, Switzerland
| | - Vérane Achard
- Department of Radiation Oncology, Fribourg Cantonal Hospital, Fribourg, Switzerland
- Department of Radiation Oncology, Geneva University Hospital, Geneva, Switzerland
- Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | | | - Maud Jaccard
- Department of Radiation Oncology, Geneva University Hospital, Geneva, Switzerland
| | - Frederik Vanhoutte
- Department of Radiation Oncology, Ghent University Hospital, Ghent, Belgium
| | - Giovanna Dipasquale
- Department of Radiation Oncology, Geneva University Hospital, Geneva, Switzerland
| | - Piet Ost
- Department of Radiation Oncology, Ghent University Hospital, Ghent, Belgium
- Iridium Network, Radiation Oncology, Antwerp, Belgium
| | - Thomas Zilli
- Department of Radiation Oncology, Geneva University Hospital, Geneva, Switzerland
- Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Department of Radiation Oncology, Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland
- Facoltà di Scienze Biomediche, Università della Svizzera Italiana, Lugano, Switzerland
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24
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Murray J, De Meerleer G. How High Should We Go for Para-aortic Lymph Node Radiation Therapy? Int J Radiat Oncol Biol Phys 2023; 117:641-643. [PMID: 37739609 DOI: 10.1016/j.ijrobp.2023.06.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 06/21/2023] [Accepted: 06/23/2023] [Indexed: 09/24/2023]
Affiliation(s)
- Julia Murray
- Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Division of Radiotherapy and Imaging, Institute of Cancer Research, Sutton, United Kingdom.
| | - Gert De Meerleer
- Department of Radiotherapy, University Hospitals Leuven, Leuven, Belgium
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25
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Surasi DS, Eiber M, Maurer T, Preston MA, Helfand BT, Josephson D, Tewari AK, Somford DM, Rais-Bahrami S, Koontz BF, Bostrom PJ, Chau A, Davis P, Schuster DM, Chapin BF. Diagnostic Performance and Safety of Positron Emission Tomography with 18F-rhPSMA-7.3 in Patients with Newly Diagnosed Unfavourable Intermediate- to Very-high-risk Prostate Cancer: Results from a Phase 3, Prospective, Multicentre Study (LIGHTHOUSE). Eur Urol 2023; 84:361-370. [PMID: 37414702 DOI: 10.1016/j.eururo.2023.06.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/20/2023] [Accepted: 06/20/2023] [Indexed: 07/08/2023]
Abstract
BACKGROUND Radiohybrid (rh) 18F-rhPSMA-7.3 is a novel high-affinity prostate-specific membrane antigen (PSMA)-targeting radiopharmaceutical for prostate cancer (PCa) imaging. OBJECTIVE To evaluate the diagnostic performance and safety of 18F-rhPSMA-7.3 in newly diagnosed PCa patients planned for prostatectomy. DESIGN, SETTING, AND PARTICIPANTS Data on 18F-rhPSMA-7.3 were reported from the phase 3 prospective, multicentre LIGHTHOUSE study (NCT04186819). OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS Patients underwent positron emission tomography/computed tomography (PET/CT) 50-70 min after an injection of 296 MBq 18F-rhPSMA-7.3. Images were interpreted locally and by three blinded independent readers. The coprimary endpoints were patient-level sensitivity and specificity for the detection of pelvic lymph node (PLN) metastases, validated using histopathology at PLN dissection. Prespecified statistical thresholds (lower bounds of 95% confidence interval [CI]) were set at 22.5% for sensitivity and 82.5% for specificity. RESULTS AND LIMITATIONS Of 372 patients screened, 352 had evaluable 18F-rhPSMA-7.3-PET/CT and 296 (99 [33%] with unfavourable intermediate-risk [UIR] and 197 [67%] with high-/very-high-risk [VHR] PCa) subsequently underwent surgery. As per the independent reads, 23-37 (7.8-13%) patients had 18F-rhPSMA-7.3-positive PLN. Seventy (24%) patients had one or more positive PLNs on histopathology. The sensitivity for PLN detection was 30% (95% CI, 19.6-42.1%) for reader 1, 27% (95% CI, 17.2-39.1%) for reader 2, and 23% (95% CI, 13.7-34.4%) for reader 3, not meeting the prespecified threshold. Specificity was 93% (95% CI, 88.8-95.9%), 94% (95% CI, 89.8-96.6%), and 97% (95% CI, 93.7-98.7%), respectively, exceeding the threshold for all readers. Specificity was high (≥92%) across both risk stratifications. Sensitivity was higher among high-risk/VHR (24-33%) than among UIR (16-21%) patients. Extrapelvic (M1) lesions were reported for 56-98/352 (16-28%) patients who underwent 18F-rhPSMA-7.3-PET/CT irrespective of surgery. Verification of these (predominantly by conventional imaging) gave a verified detection rate of 9.9-14% (positive predictive value, 51-63%). No serious adverse events were observed. CONCLUSIONS Across all risk stratifications, 18F-rhPSMA-7.3-PET/CT had high specificity, meeting the specificity endpoint. The sensitivity endpoint was not met, although higher sensitivity was noted among high-risk/VHR than among UIR patients. Overall, 18F-rhPSMA-7.3-PET/CT was well tolerated, and identified N1 and M1 disease prior to surgery in newly diagnosed PCa patients. PATIENT SUMMARY In order to select the most appropriate treatment for patients with prostate cancer, it is critical to diagnose the disease burden accurately at initial diagnosis. In this study, we investigated a new diagnostic imaging agent in a large population of men with primary prostate cancer. We found it to have an excellent safety profile and to provide clinically useful information regarding the presence of disease beyond the prostate.
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Affiliation(s)
- Devaki Shilpa Surasi
- Department of Nuclear Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Matthias Eiber
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Tobias Maurer
- Martini-Klinik, Hamburg, Germany; Department of Urology, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | | | - David Josephson
- Tower Urology, Los Angeles, CA, USA; Cedars Sinai Medical Center, Los Angeles, CA, USA
| | | | - Diederik M Somford
- Department of Urology, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands; Prosper Prostate Cancer Clinics, Nijmegen/Eindhoven, The Netherlands
| | | | | | - Peter J Bostrom
- Turku University Central Hospital, Turku, Finland; University of Turku, Turku, Finland
| | | | - Phillip Davis
- Blue Earth Diagnostics Inc, Monroe Township, NJ, USA
| | - David M Schuster
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Brian F Chapin
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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26
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Elakshar S, Tolba M, Tisseverasinghe S, Pruneau L, Di Lalla V, Bahoric B, Niazi T. Salvage Whole-Pelvic Radiation and Long-Term Androgen-Deprivation Therapy in the Management of High-Risk Prostate Cancer: Long-Term Update of the McGill 0913 Study. Curr Oncol 2023; 30:7252-7262. [PMID: 37623007 PMCID: PMC10453184 DOI: 10.3390/curroncol30080526] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/26/2023] Open
Abstract
PURPOSE To report the long-term outcomes of the McGill 0913 study and the potential benefits of combining prostate-bed radiotherapy (PBRT), pelvic-lymph-node radiotherapy (PLNRT), and long term ADT (LT-ADT). MATERIALS AND METHODS From 2010 to 2016, 46 high-risk prostate cancer patients who experienced biochemical recurrence (BCR) after radical prostatectomy (RP) were enrolled in this single-arm phase II clinical trial. The patients were eligible if they had a Gleason score > 8, locally advanced disease (≥pT3), a preoperative PSA of >20 ng/mL, or positive lymph nodes (LN). The patients were treated with a combination of 24 months of ADT, PBRT, and PLNRT. The primary outcome was biochemical progression-free survival (bPFS) and the predefined secondary endpoints included distant-metastasis-free survival (DMFS), overall survival (OS), and toxicity. In this update, we also report the median follow-up of 8.8 years and 10 years OS. RESULTS At a median follow-up of 8.8 years, 43 patients were eligible for analysis. The median pre-salvage PSA was 0.30 μg/L. Half (51%) of the patients (n = 22) had positive margins, 40% (n = 17) had Gleason scores > 8, 63% (n = 27) had extracapsular extension, 42% (n = 18) had seminal vesicle invasion, and 19% (n = 8) had LN involvement. The 10-year bPFS was 68.3 %. The 10-year DMFS was 72.9%. The 10-year OS was 97%. There were two non-cancer-related deaths. The first patient died of congestive heart failure while the other died of an unknown cause. No new toxicity was observed after the initial report. CONCLUSIONS Our study demonstrates that treatment escalation with PBRT, PLNRT, and LT-ADT improves long term outcomes. In view of the recently published SPPORT study, we conclude that this novel approach of treatment intensification in high-risk post-prostatectomy patients is safe and effective, and that it should be offered as the standard of care.
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Affiliation(s)
- Sara Elakshar
- Department of Radiation Oncology, Jewish General Hospital, McGill University, Montreal, QC H3T 1E2, Canada; (S.E.); (M.T.); (L.P.); (V.D.L.); (B.B.)
- Department of Clinical Oncology, Tanta University Hospitals, Tanta University, Tanta 6632110, Egypt
| | - Marwan Tolba
- Department of Radiation Oncology, Jewish General Hospital, McGill University, Montreal, QC H3T 1E2, Canada; (S.E.); (M.T.); (L.P.); (V.D.L.); (B.B.)
| | - Steven Tisseverasinghe
- Department of Radiation Oncology, Gatineau Hospital, McGill University, Gatineau, QC J8P 7H2, Canada;
| | - Laurie Pruneau
- Department of Radiation Oncology, Jewish General Hospital, McGill University, Montreal, QC H3T 1E2, Canada; (S.E.); (M.T.); (L.P.); (V.D.L.); (B.B.)
| | - Vanessa Di Lalla
- Department of Radiation Oncology, Jewish General Hospital, McGill University, Montreal, QC H3T 1E2, Canada; (S.E.); (M.T.); (L.P.); (V.D.L.); (B.B.)
| | - Boris Bahoric
- Department of Radiation Oncology, Jewish General Hospital, McGill University, Montreal, QC H3T 1E2, Canada; (S.E.); (M.T.); (L.P.); (V.D.L.); (B.B.)
| | - Tamim Niazi
- Department of Radiation Oncology, Jewish General Hospital, McGill University, Montreal, QC H3T 1E2, Canada; (S.E.); (M.T.); (L.P.); (V.D.L.); (B.B.)
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27
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Ah-Thiane L, Rousseau C, Aumont M, Cailleteau A, Doré M, Mervoyer A, Vaugier L, Supiot S. The Sentinel Lymph Node in Treatment Planning: A Narrative Review of Lymph-Flow-Guided Radiotherapy. Cancers (Basel) 2023; 15:2736. [PMID: 37345071 DOI: 10.3390/cancers15102736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 06/23/2023] Open
Abstract
The sentinel lymph node technique is minimally invasive and used routinely by surgeons, reducing the need for morbid extensive lymph node dissections, which is a significant advantage for cancer staging and treatment decisions. The sentinel lymph node could also help radiation oncologists to identify tumor drainage for each of their patients, leading to a more personalized radiotherapy, instead of a probabilistic irradiation based on delineation atlases. The aim is both to avoid recurrence in unexpected areas and to limit the volume of irradiated healthy tissues. The aim of our study is to evaluate the impact of sentinel lymph node mapping for radiation oncologists. This concept, relying on sentinel lymph node mapping for treatment planning, is known as lymph-flow-guided radiotherapy. We present an up-to-date narrative literature review showing the potential applications of the sentinel lymph node technique for radiotherapy, as well as the limits that need to be addressed before its routine usage.
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Affiliation(s)
- Loic Ah-Thiane
- Department of Radiotherapy, ICO René Gauducheau, Boulevard Jacques Monod, 44800 St-Herblain, France
| | - Caroline Rousseau
- Department of Nuclear Medicine, ICO René Gauducheau, Boulevard Jacques Monod, 44800 St-Herblain, France
- CRCI2NA, UMR 1307 Inserm-UMR 6075 CNRS, Nantes University, 44000 Nantes, France
| | - Maud Aumont
- Department of Radiotherapy, ICO René Gauducheau, Boulevard Jacques Monod, 44800 St-Herblain, France
| | - Axel Cailleteau
- Department of Radiotherapy, ICO René Gauducheau, Boulevard Jacques Monod, 44800 St-Herblain, France
| | - Mélanie Doré
- Department of Radiotherapy, ICO René Gauducheau, Boulevard Jacques Monod, 44800 St-Herblain, France
| | - Augustin Mervoyer
- Department of Radiotherapy, ICO René Gauducheau, Boulevard Jacques Monod, 44800 St-Herblain, France
| | - Loig Vaugier
- Department of Radiotherapy, ICO René Gauducheau, Boulevard Jacques Monod, 44800 St-Herblain, France
| | - Stéphane Supiot
- Department of Radiotherapy, ICO René Gauducheau, Boulevard Jacques Monod, 44800 St-Herblain, France
- CRCI2NA, Inserm UMR 1232, CNRS ERL 6001, Nantes University, 44000 Nantes, France
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28
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Scharl S, Zamboglou C, Strouthos I, Farolfi A, Serani F, Lanzafame H, Giuseppe Morganti A, Trapp C, Koerber SA, Debus J, Peeken JC, Vogel MME, Vrachimis A, K B Spohn S, Ruf J, Grosu AL, Ceci F, Fendler WP, Bartenstein P, Kroeze SGC, Guckenberger M, Krafcsik M, Klopscheck C, Fanti S, Hruby G, Emmett L, Belka C, Stief C, Schmidt-Hegemann NS, Henkenberens C, Mayer B, Miksch J, Shelan M, Aebersold DM, Thamm R, Wiegel T. Salvage radiotherapy is effective in patients with PSMA-PET-negative biochemical recurrence- results of a retrospective study. Radiother Oncol 2023; 184:109678. [PMID: 37146766 DOI: 10.1016/j.radonc.2023.109678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 05/07/2023]
Abstract
BACKGROUND /Purpose: The present study aimed to assess whether SRT to the prostatic fossa should be initiated in a timely manner after detecting biochemical recurrence (BR) in patients with prostate cancer, when no correlate was identified with prostate-specific membrane antigen positron emission tomography (PSMA-PET). MATERIALS AND METHODS This retrospective, multicenter analysis included 1222 patients referred for PSMA-PET after a radical prostatectomy due to BR. Exclusion criteria were: pathological lymph node metastases, prostate-specific antigen (PSA) persistence, distant or lymph node metastases, nodal irradiation, and androgen deprivation therapy (ADT). This led to a cohort of 341 patients. Biochemical progression-free survival (BPFS) was the primary study endpoint. RESULTS The median follow-up was 28.0 months. The 3-year BPFS was 71.6% in PET-negative cases and 80.8% in locally PET-positive cases. This difference was significant in univariate (p=0.019), but not multivariate analyses (p=0.366, HR: 1.46, 95%CI: 0.64-3.32). The 3-year BPFS in PET-negative cases was significantly influenced by age (p=0.005), initial pT3/4 (p<0.001), pathology scores (ISUP) ≥3 (p=0.026), and doses to fossa >70 Gy (p=0.027) in univariate analyses. In multivariate analyses, only age (HR: 1.096, 95%CI: 1.023-1.175, p=0.009) and PSA-doubling time (HR: 0.339, 95%CI: 0.139-0.826, p=0.017) remained significant. CONCLUSION To our best knowledge, this study provided the largest SRT analysis in patients without ADT that were lymph node-negative on PSMA-PET. A multivariate analysis showed no significant difference in BPFS between locally PET-positive and PET-negative cases. These results supported the current EAU recommendation to initiate SRT in a timely manner after detecting BR in PET negative patients.
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Affiliation(s)
- Sophia Scharl
- Department of Radiation Oncology, University Hospital Ulm, Germany.
| | - Constantinos Zamboglou
- Department of Radiation Oncology, Medical Center -Faculty of Medicine, University of Freiburg, Germany; German Cancer Consortium (DKTK), Partner Site Freiburg, Germany; Berta-Ottenstein-Programme, Faculty of Medicine, University of Freiburg, Germany; German Oncology Center, University Hospital of the European University, Limassol, Cyprus
| | - Iosif Strouthos
- Department of Radiation Oncology, German Oncology Center, University Hospital of the European University, Limassol, Cyprus
| | - Andrea Farolfi
- Division of Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Francesca Serani
- Division of Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Helena Lanzafame
- Division of Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy; Department of Radiation Oncology, Royal North Shore Hospital - University of Sydney, Australia
| | | | - Christian Trapp
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
| | - Stefan A Koerber
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center, Heidelberg, Germany
| | - Jürgen Debus
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany; Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center, Heidelberg, Germany
| | - Jan C Peeken
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Germany; Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Zentrum, München, Germany; Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Germany
| | - Marco M E Vogel
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Germany; Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Zentrum, München, Germany; Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Germany
| | - Alexis Vrachimis
- Department of Nuclear Medicine, German Oncology Center, University Hospital of the European University, Limassol, Cyprus; C.A.R.I.C. Cancer Research & Innovation Center, Limassol, Cyprus
| | - Simon K B Spohn
- Department of Radiation Oncology, Medical Center -Faculty of Medicine, University of Freiburg, Germany; German Cancer Consortium (DKTK), Partner Site Freiburg, Germany; Berta-Ottenstein-Programme, Faculty of Medicine, University of Freiburg, Germany
| | - Juri Ruf
- German Cancer Consortium (DKTK), Partner Site Freiburg, Germany; Department of Nuclear Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Anca-Ligia Grosu
- Department of Radiation Oncology, Medical Center -Faculty of Medicine, University of Freiburg, Germany; German Cancer Consortium (DKTK), Partner Site Freiburg, Germany
| | - Francesco Ceci
- Division of Nuclear Medicine, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Wolfgang P Fendler
- Department of Nuclear Medicine, University Hospital, LMU Munich, Germany; Department of Nuclear Medicine, University Hospital Essen, Essen, Germany
| | - Peter Bartenstein
- Department of Radiation Oncology, University Hospital Zürich, University of Zurich, Switzerland
| | - Stephanie G C Kroeze
- Department of Radiation Oncology, University Hospital Ulm, Germany; Radiation Oncology Center KSA-KSB, Canton Hospital of Aarau, Aarau, Switzerland
| | | | - Manuel Krafcsik
- Department of Radiation Oncology, University Hospital Ulm, Germany
| | | | - Stefano Fanti
- Division of Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - George Hruby
- Department of Radiation Oncology, Royal North Shore Hospital - University of Sydney, Australia
| | - Louise Emmett
- Department of Theranostics and Nuclear medicine, St Vincent's Hospital Sydney Australia; St Vincent's Clinical School, University of New South Wales, Sydney Australia
| | - Claus Belka
- Department of Radiation Oncology, University Hospital, LMU Munich, Germany
| | - Christian Stief
- Department of Urology, University Hospital, LMU Munich, Germany
| | | | - Christoph Henkenberens
- Department of Radiotherapy and Special Oncology, Medical School Hannover, Hannover, Germany
| | - Benjamin Mayer
- Institute for Epidemiology and Medical Biometry, University Ulm, Ulm, Germany
| | - Jonathan Miksch
- Department of Nuclear Medicine, University Hospital Ulm, University Ulm, Ulm, Germany
| | - Mohamed Shelan
- Department of Radiation Oncology, Inselspital Bern, University of Bern, Switzerland
| | - Daniel M Aebersold
- Department of Radiation Oncology, Inselspital Bern, University of Bern, Switzerland
| | - Reinhard Thamm
- Department of Radiation Oncology, University Hospital Ulm, Germany
| | - Thomas Wiegel
- Department of Radiation Oncology, University Hospital Ulm, Germany
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Sujenthiran A, Parry MG, Dodkins J, Nossiter J, Morris M, Berry B, Nathan A, Cathcart P, Clarke NW, Payne H, van der Meulen J, Aggarwal A. Treatment-related toxicity using prostate bed versus prostate bed and pelvic lymph node radiation therapy following radical prostatectomy: A national population-based study. Clin Transl Radiat Oncol 2023; 40:100622. [PMID: 37152844 PMCID: PMC10159812 DOI: 10.1016/j.ctro.2023.100622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 03/08/2023] [Accepted: 03/25/2023] [Indexed: 05/09/2023] Open
Abstract
Purpose There is debate about the effectiveness and toxicity of pelvic lymph node (PLN) irradiation in addition to prostate bed radiotherapy when used to treat disease recurrence following radical prostatectomy. We compared toxicity from radiation therapy (RT) to the prostate bed and pelvic lymph nodes (PBPLN-RT) with prostatebed only radiation therapy (PBO-RT) following radical prostatectomy. Methods and Materials Patients with prostate cancer who underwent post-prostatectomy RT between 2010 and 2016 were identified by using the National Prostate Cancer Audit (NPCA) database. Follow-up data was available up to December 31, 2018. Validated outcome measures, based on a framework of procedural and diagnostic codes, were used to capture ≥Grade 2 gastrointestinal (GI) and genitourinary (GU) toxicity. An adjusted competing-risks regression analysis estimated subdistribution hazard ratios (sHR). A sHR > 1 indicated a higher incidence of toxicity with PBPLN-RT than with PBO-RT. Results 5-year cumulative incidences in the PBO-RT (n = 5,087) and PBPLNRT (n = 593) groups was 18.2% and 15.9% for GI toxicity, respectively. For GU toxicity it was 19.1% and 20.7%, respectively. There was no evidence of difference in GI or GU toxicity after adjustment between PBO-RT and PBPLN-RT (GI: adjusted sHR, 0.90, 95% CI, 0.67-1.19; P = 0.45); (GU: adjusted sHR, 1.19, 95% CI, 0.99-1.44; P = 0.09). Conclusions This national population-based study found that including PLNs in the radiation field following radical prostatectomy is not associated with a significant increase in rates of ≥Grade 2 GI or GU toxicity at 5 years.
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Affiliation(s)
- Arunan Sujenthiran
- Clinical Effectiveness Unit, Royal College of Surgeons of England, UK
- Flatiron Health, UK
| | - Matthew G. Parry
- Clinical Effectiveness Unit, Royal College of Surgeons of England, UK
- Department of Health Services Research & Policy, LHSTM, UK
| | - Joanna Dodkins
- Clinical Effectiveness Unit, Royal College of Surgeons of England, UK
- Department of Health Services Research & Policy, LHSTM, UK
- Corresponding authors at: Clinical Effectiveness Unit, Royal College of Surgeons of England, 35-43 Lincoln’s Inn Fields, London WC2A 3PE, England, UK.
| | - Julie Nossiter
- Department of Health Services Research & Policy, LHSTM, UK
| | - Melanie Morris
- Clinical Effectiveness Unit, Royal College of Surgeons of England, UK
- Department of Health Services Research & Policy, LHSTM, UK
| | - Brendan Berry
- Clinical Effectiveness Unit, Royal College of Surgeons of England, UK
- Department of Health Services Research & Policy, LHSTM, UK
| | - Arjun Nathan
- Clinical Effectiveness Unit, Royal College of Surgeons of England, UK
| | - Paul Cathcart
- Department of Urology, Guy’s & St Thomas’ NHS Foundation Trust, UK
| | - Noel W. Clarke
- Department of Urology, The Christie & Salford Royal NHS Foundation Trusts, UK
| | - Heather Payne
- Department of Oncology, University College London Hospitals, London, UK
| | | | - Ajay Aggarwal
- Department of Health Services Research & Policy, LHSTM, UK
- Department of Radiotherapy, Guy’s & St Thomas’ NHS Foundation Trust, UK
- Department of Cancer Epidemiology, Population & Global Health, KCL, UK
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Choo R, Hillman DW, Mitchell C, Daniels T, Vargas C, Rwigema JC, Corbin K, Keole S, Vora S, Merrell K, Stish B, Pisansky T, Davis BJ, Amundson A, Wong W. Late Toxicity of Moderately Hypofractionated Intensity-Modulated Proton Therapy Treating the Prostate and Pelvic Lymph Nodes for High-Risk Prostate Cancer. Int J Radiat Oncol Biol Phys 2023; 115:1085-1094. [PMID: 36427645 DOI: 10.1016/j.ijrobp.2022.11.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/19/2022] [Accepted: 11/11/2022] [Indexed: 11/23/2022]
Abstract
PURPOSE To evaluate late gastrointestinal (GI) and genitourinary (GU) toxicity of moderately hypofractionated intensity modulated proton therapy (IMPT) targeting the prostate and pelvic lymph nodes. METHODS AND MATERIALS A target accrual of 56 patients with high-risk or unfavorable intermediate risk prostate cancer were enrolled into a prospective study (ClinicalTrials.gov: NCT02874014) of moderately hypofractionated IMPT. IMPT with pencil beam scanning was used to deliver 6750 and 4500 cGy relative biological effectiveness in 25 daily fractions simultaneously to the prostate and pelvic lymph nodes, respectively. All received androgen deprivation therapy. Late GI and GU toxicity was prospectively assessed using Common Terminology Criteria for Adverse Events version 4.0, at baseline, weekly during radiation therapy, 3-month postradiation therapy, and then every 6 months. Actuarial rates of late GI and GU toxicity were estimated using Kaplan-Meier method. RESULTS Median age was 75.5 years. Fifty-four patients were available for late toxicity evaluation. Median follow-up was 43.9 months (range, 16-66). The actuarial rate of late grade ≥2 GI toxicity at both 2 and 3 years was 7.4% (95% confidence interval [CI], 0.2%-14.2%). The actuarial rate of late grade 3 GI toxicity at both 2 and 3 years was 1.9% (95% CI, 0%-5.4%). One patient experienced grade 3 GI toxicity with proctitis. The actuarial rate of late grade ≥2 GU toxicity was 20.5% (95% CI, 8.9%-30.6%) at 2 years, and 29.2 % (95% CI, 15.5%-40.7%) at 3 years. None had grade 3 GU toxicity. The presence of baseline GU symptoms was associated with a higher likelihood of experiencing late grade 2 GU toxicity. CONCLUSIONS A moderately hypofractionated IMPT targeting the prostate and regional pelvic lymph nodes was generally well tolerated. Patients with pre-existing GU symptoms had a higher rate of late grade 2 GU toxicity. A phase 3 study is needed to assess any therapeutic gain of IMPT, in comparison with photon-based radiation therapy.
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Affiliation(s)
- Richard Choo
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota.
| | - David W Hillman
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - Cecilia Mitchell
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - Thomas Daniels
- Department of Radiation Oncology, Mayo Clinic, Scottsdale, Arizona
| | - Carlos Vargas
- Department of Radiation Oncology, New York University Langone Hospital, Brooklyn, New York
| | - Jean Claude Rwigema
- Department of Radiation Oncology, New York University Langone Hospital, Brooklyn, New York
| | - Kimberly Corbin
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Sameer Keole
- Department of Radiation Oncology, New York University Langone Hospital, Brooklyn, New York
| | - Sujay Vora
- Department of Radiation Oncology, New York University Langone Hospital, Brooklyn, New York
| | - Kenneth Merrell
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Bradley Stish
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Thomas Pisansky
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Brian J Davis
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Adam Amundson
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - William Wong
- Department of Radiation Oncology, New York University Langone Hospital, Brooklyn, New York
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Metz R, Rauscher A, Vaugier L, Supiot S, Drouet F, Campion L, Rousseau C. Comparison of Hormone-Sensitive Oligorecurrent Prostate Cancer Patients Based on Routine Use of Choline and/or PSMA PET/CT to Guide Metastasis-Directed Therapy. Cancers (Basel) 2023; 15:cancers15061898. [PMID: 36980784 PMCID: PMC10047404 DOI: 10.3390/cancers15061898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND In hormone-sensitive oligorecurrent prostate cancer (PC), the literature showed [68Ga]Ga-PSMA (PSMA) and [18F]F-choline (FCH) PET/CT can successfully guide metastasis-directed therapies (MDT). This observational retrospective study aimed to explore, in routine use, the impact of FCH or PSMA PET/CT in guiding MDT for hormone-sensitive oligometastatic PC at different recurrences. METHODS In 2017-2020, patients initially treated with radical prostatectomy but, in biochemical recurrence (with PSA ≤ 2 ng/mL), diagnosed as oligometastatic based on FCH or PSMA PET/CT, were identified. MDT was stereotactic body radiotherapy (SBRT), elective nodal or prostate bed radiotherapy ± boost and ± androgen deprivation therapy (ADT). The primary endpoint was biochemical relapse-free survival (BR-FS), defined as a PSA increase ≥ 0.2 ng/mL above the nadir and increasing over two successive samples and the secondaries were ADT-free survival (ADT-FS). RESULTS 123 patients (70 PSMA and 53 FCH) were included. The median follow-up was 42.2 months. The median BR-FS was 24.7 months in the PSMA group versus 13.0 months in the FCH group (p = 0.008). Similarly, ADT-FS (p = 0.001) was longer in patients in the PSMA group. In multivariate analysis, a short PSA doubling time before imaging (p = 0.005) and MDT with SBRT (p = 0.001) were poor prognostic factors for BR-FS. CONCLUSIONS Routine use of FCH or PSMA PET/CT in hormone-sensitive PC showed an advantage for using PSMA PET/CT to guide MDT in terms of BR-FS and ADT-FS in patients with low PSA value. Prospective studies are needed to confirm these hypotheses.
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Affiliation(s)
- Raphaël Metz
- Nuclear Medicine Department, Institut de Cancérologie de l'Ouest, Boulevard J. Monod, F-44800 St-Herblain, France
| | - Aurore Rauscher
- Nuclear Medicine Department, Institut de Cancérologie de l'Ouest, Boulevard J. Monod, F-44800 St-Herblain, France
| | - Loïg Vaugier
- Radiation Oncology Department, Institut de Cancérologie de l'Ouest, Boulevard J. Monod, F-44800 St-Herblain, France
| | - Stéphane Supiot
- Radiation Oncology Department, Institut de Cancérologie de l'Ouest, Boulevard J. Monod, F-44800 St-Herblain, France
- Laboratoire US2B, Unité en Sciences Biologiques et Biotechnologies, UMR CNRS 6286, UFR SCIENCES ET TECHNIQUES, 2, Rue de la Houssinière, F-44322 Nantes, France
| | - Franck Drouet
- Radiation Oncology Department, Clinique Mutualiste de l'Estuaire, F-44600 Saint-Nazaire, France
| | - Loic Campion
- Biostatistics Department, Institut de Cancérologie de l'Ouest, Boulevard J. Monod, F-44800 St-Herblain, France
- Nantes Université, Univ Angers, INSERM, CNRS, CRCI2NA, F-44000 Nantes, France
| | - Caroline Rousseau
- Nuclear Medicine Department, Institut de Cancérologie de l'Ouest, Boulevard J. Monod, F-44800 St-Herblain, France
- Nantes Université, Univ Angers, INSERM, CNRS, CRCI2NA, F-44000 Nantes, France
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Padayachee J, Chaudhary S, Shim B, So J, Lim R, Raman S. Utilizing clinical, pathological and radiological information to guide postoperative radiotherapy in prostate cancer. Expert Rev Anticancer Ther 2023; 23:293-305. [PMID: 36795862 DOI: 10.1080/14737140.2023.2181795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
INTRODUCTION A detectable and rising PSA following radical prostatectomy is indicative of recurrent prostate cancer. Salvage radiotherapy (SRT) with/without androgen deprivation therapy represents the main treatment option for these patients and has been historically associated with a biochemical control rate of ~70%. To determine the optimal timing, diagnostic workup, radiotherapy dosefractionation, treatment volume, and use of systemic therapy, several informative studies have been conducted in the last decade. AREAS COVERED This review examines the recent evidence to guide radiotherapy decision making in the SRT setting. Key topics include adjuvant vs salvage RT, utilization of molecular imaging and genomic classifiers, length of androgen deprivation therapy, inclusion of elective pelvic volume, and emerging role for hypofractionation. EXPERT OPINION Recently reported trials, conducted in an era prior to the routine use of molecular imaging and genomic classifiers, have been pivotal in establishing the current standard of care for SRT in prostate cancer. However, decisions about radiation treatment and systemic therapy may be tailored based on available prognostic and predictive biomarkers. Data from contemporary clinical trials are awaited to define and establish individualized, biomarker-driven approaches for SRT.
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Affiliation(s)
- Jerusha Padayachee
- Department of Radiation Oncology, Auckland City Hospital, Auckland, New Zealand
| | - Simone Chaudhary
- Princess Margaret Hospital Cancer Centre, Radiation Medicine Program, Toronto, ON, Canada
| | - Brian Shim
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Jonathan So
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Remy Lim
- Mercy PET/CT Epsom, Auckland, New Zealand.,Department of Radiology, Auckland City Hospital, Auckland, New Zealand
| | - Srinivas Raman
- Princess Margaret Hospital Cancer Centre, Radiation Medicine Program, Toronto, ON, Canada
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Repka MC, Carrasquilla M, Paydar I, Wu B, Lei S, Suy S, Collins SP, Kole TP. Dosimetric predictors of acute bowel toxicity after Stereotactic Body Radiotherapy (SBRT) in the definitive treatment of localized prostate cancer. Acta Oncol 2023; 62:174-179. [PMID: 36826994 DOI: 10.1080/0284186x.2023.2180661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
INTRODUCTION SBRT is an increasingly popular treatment for localized prostate cancer, though considerable variation in technical approach is common and optimal dose constraints are uncertain. In this study, we sought to identify dosimetric and patient-related predictors of acute rectal toxicity. METHODS Patients included in this study were treated with prostate SBRT on a prospective institutional protocol. Physician-graded toxicity and patient-reported outcomes were captured at one week, one month, and three months following SBRT. DVH data were extracted and converted into relative volume differential DVHs for NTCP modeling. Patient- and disease-related covariates along with NTCP model predictions were independently tested for significant association with physician-graded toxicity or a decline in bowel-related QoL. A multivariate model was constructed using forward selection, and significant parameter cutoff values were obtained with Fischer's exact test to group patients by risk of developing physician-graded toxicity or detriments in patient-reported QoL. RESULTS One hundred and three patients treated for localized prostate cancer with SBRT were included in our analysis. 52% of patients experienced a clinically significant decline in bowel-related QOL within 1 week of completion of treatment, while only 27.5% of patients developed grade 2+ physician-graded rectal toxicity. Sequential feature selection multivariate logistic regression identified rectal V22.5 Gy (p = 0.001) and D19% (p = 0.001) as independent predictors of clinically significant toxicity, while rectal V20Gy (p = 0.004) and D25.3% (p = 0.007) were independently correlated with physician-graded toxicity. Global multivariate step-wise logistic regression identified only D19% (p = 0.001) and V20Gy (p = 0.004) as independent predictors of acute bowel bother or physician-graded rectal toxicity respectively. CONCLUSIONS Moderate doses to large rectal volumes, D19% and V20Gy, were associated with an increased incidence of a clinically significant decrease in patient-reported bowel QOL and physician-scored grade 2+ rectal toxicity, respectively. These dosimetric parameters may help practitioners mitigate acute toxicity in patients treated with prostate SBRT.
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Affiliation(s)
- Michael C Repka
- Department of Radiation Oncology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Michael Carrasquilla
- Department of Radiation Medicine, MedStar Georgetown University Hospital, Washington, DC, USA
| | | | - Binbin Wu
- Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Siyuan Lei
- Department of Radiation Medicine, MedStar Georgetown University Hospital, Washington, DC, USA
| | - Simeng Suy
- Department of Radiation Medicine, MedStar Georgetown University Hospital, Washington, DC, USA
| | - Sean P Collins
- Department of Radiation Medicine, MedStar Georgetown University Hospital, Washington, DC, USA
| | - Thomas P Kole
- Department of Radiation Oncology, Valley Mount Sinai Comprehensive Cancer Care, Paramus, NJ, USA
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Prostate-specific Membrane Antigen-radioguided Surgery Facilitates Pelvic Lymph Node Dissection During Radical Prostatectomy for the Treatment of Locally Advanced Prostate Cancer with Regional Lymph Node Metastases. Eur Urol Oncol 2023; 6:95-98. [PMID: 36604297 DOI: 10.1016/j.euo.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 11/16/2022] [Accepted: 12/19/2022] [Indexed: 01/07/2023]
Abstract
Lymph node metastases (LNMs) are common in intermediate- to high-risk prostate cancer (PC) and may be missed during extended pelvic lymph node dissection (ePLND). Here we report on the use of prostate-specific membrane antigen (PSMA)-radioguided surgery (RGS) during open radical prostatectomy (RP) with ePLND to resect locoregional LNMs identified on preoperative PSMA positron emission tomography (PET). Preoperative PSMA PET showed 78 LNMs in 35 patients undergoing RP with ePLND and RGS between January 2018 and June 2020. In 14 patients (40%), LNMs were located outside the ePLND template. RGS achieved resection of PSMA-positive LNMs in 33/35 patients (94%). On univariable analysis, lower metastatic burden with up to two PSMA-positive LNMs on preoperative PET was associated with better postoperative outcomes. Limitations include the retrospective analysis and the small sample size. RGS facilitates resection of PSMA-positive LNs in patients treated with RP. Our data indicate a favorable treatment outcome in patients with low metastatic LN burden on preoperative PSMA PET. PATIENT SUMMARY: We investigated the use of radioactive guidance to remove lymph nodes affected by prostate cancer during surgical removal of the prostate. This approach can help to identify cancerous lymph nodes that might otherwise be missed and could lead to better survival outcomes.
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Variability of radiotherapy volume delineation: PSMA PET/MRI and MRI based clinical target volume and lymph node target volume for high-risk prostate cancer. Cancer Imaging 2023; 23:1. [PMID: 36600283 DOI: 10.1186/s40644-022-00518-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 12/25/2022] [Indexed: 01/06/2023] Open
Abstract
PURPOSE A comparative retrospective study to assess the impact of PSMA Ligand PET/MRI ([68 Ga]-Ga-PSMA-11 and [18F]-F-PSMA-1007 PET/MRI) as a new method of target delineation compared to conventional imaging on whole-pelvis radiotherapy for high-risk prostate cancer (PCa). PATIENTS AND METHODS Forty-nine patients with primary high-risk PCa completed the whole-pelvis radiotherapy plan based on PSMA PET/MRI and MRI. The primary endpoint compared the size and overlap of clinical target volume (CTV) and nodal gross tumour volume (GTVn) based on PSMA PET/MRI and MRI. The diagnostic performance of two methods for pelvic lymph node metastasis (PLNM) was evaluated. RESULTS In the radiotherapy planning for high-risk PCa patients, there was a significant correlation between MRI-CTV and PET/MRI-CTV (P = 0.005), as well as between MRI-GTVn and PET/MRI-GTVn (P < 0.001). There are non-significant differences in the CTV and GTVn based on MRI and PET/MRI images (P = 0.660, P = 0.650, respectively). The conformity index (CI), lesion coverage factor (LCF) and Dice similarity coefficient (DSC) of CTVs were 0.999, 0.953 and 0.954. The CI, LCF and DSC of GTVns were 0.927, 0.284, and 0.32. Based on pathological lymph node analysis of 463 lymph nodes from 37 patients, the sensitivity, specificity of PET/MRI in the diagnosis of PLNM were 77.78% and 99.76%, respectively, which were higher than those of MRI (P = 0.011). Eight high-risk PCa patients who finished PSMA PET/MRI changed their N or M stage. CONCLUSION The CTV delineated based on PET/MRI and MRI differ little. The GTVn delineated based on PET/MRI encompasses metastatic pelvic lymph nodes more accurately than MRI and avoids covering pelvic lymph nodes without metastasis. We emphasize the utility of PET/MRI fusion images in GTVn delineation in whole pelvic radiotherapy for PCa. The use of PSMA PET/MRI aids in the realization of more individual and precise radiotherapy for PCa.
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Confirming and Refining Our Existing Postoperative Treatment Strategies Through the Use of Novel Prostate-Specific Positron Emission Tomography (PET) Imaging. Int J Radiat Oncol Biol Phys 2023; 115:118-119. [PMID: 36526378 DOI: 10.1016/j.ijrobp.2022.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/04/2022] [Accepted: 08/05/2022] [Indexed: 12/15/2022]
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Multidisciplinary Management and Radiotherapy Recommendations for Clinically and Pathologically Node-positive Bladder Cancer. Semin Radiat Oncol 2023; 33:35-50. [PMID: 36517192 DOI: 10.1016/j.semradonc.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
There are limited data regarding the optimal management of patients with pelvic node-positive, but non-metastatic, bladder cancer. Increasing data demonstrate that this is a distinct clinical entity with outcomes bridging between bladder-confined muscle-invasive bladder cancer and metastatic advanced bladder cancer. Guidelines and staging systems have formalized the need to incorporate the unique considerations of management of pelvic node-positive bladder cancer. However, there remains an absence of a definite standard of care. Treatment options include systemic therapy alone, neoadjuvant chemotherapy followed by radical cystectomy, or bladder-preserving trimodality therapy. Furthermore, ongoing studies aim to determine the benefit of incorporating immunotherapy into these treatment paradigms. In this review article, we will discuss the key considerations for management of patients with pelvic node-positive bladder cancer.
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Poon DMC, Yang B, Geng H, Wong OL, Chiu ST, Cheung KY, Yu SK, Chiu G, Yuan J. Analysis of online plan adaptation for 1.5T magnetic resonance-guided stereotactic body radiotherapy (MRgSBRT) of prostate cancer. J Cancer Res Clin Oncol 2023; 149:841-850. [PMID: 35199189 PMCID: PMC8866042 DOI: 10.1007/s00432-022-03950-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/06/2022] [Indexed: 12/11/2022]
Abstract
PURPOSE To analyze and characterize the online plan adaptation of 1.5T magnetic resonance-guided stereotactic body radiotherapy (MRgSBRT) of prostate cancer (PC). METHODS PC patients (n = 107) who received adaptive 1.5 Tesla MRgSBRT were included. Online plan adaptation was implemented by either the adapt-to-position (ATP) or adapt-to-shape (ATS) methods. Patients were assigned to the ATS group if they underwent ≥ 1 ATS fraction (n = 51); the remainder were assigned to the ATP group (n = 56). The online plan adaptation records of 535 (107 × 5) fractions were retrospectively reviewed. Rationales for ATS decision-making were determined and analyzed using predefined criteria. Statistics of ATS fractions were summarized. Associations of patient characteristics and clinical factors with ATS utilization were investigated. RESULTS There were 87 (16.3%) ATS fractions and 448 ATP fractions (83.7%). The numbers of ATS adoptions in fractions 1-5 were 29 (29/107, 27.1%), 18 (16.8%), 15 (14.0%), 16 (15.0%), and 9 (8.4%), respectively, with significant differences in adoption frequency between fractions (p = 0.007). Other baseline patient characteristics and clinical factors were not significantly associated with ATS classification (all p > 0.05). Underlying criteria for the determination of ATS implementation comprised anatomical changes (77 fractions in 50 patients) and discrete multiple targets (15 fractions in 3 patients). No ATS utilization was determined using dosimetric or online quality assurance criteria. CONCLUSIONS This study contributes to facilitating the establishment of a standardized protocol for online MR-guided adaptive radiotherapy in PC.
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Affiliation(s)
- Darren M. C. Poon
- grid.414329.90000 0004 1764 7097Comprehensive Oncology Centre, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
| | - Bin Yang
- grid.414329.90000 0004 1764 7097Medical Physics Department, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
| | - Hui Geng
- grid.414329.90000 0004 1764 7097Medical Physics Department, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
| | - Oi Lei Wong
- grid.414329.90000 0004 1764 7097Research Department, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
| | - Sin Ting Chiu
- grid.414329.90000 0004 1764 7097Department of Radiotherapy, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
| | - Kin Yin Cheung
- grid.414329.90000 0004 1764 7097Medical Physics Department, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
| | - Siu Ki Yu
- grid.414329.90000 0004 1764 7097Medical Physics Department, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
| | - George Chiu
- grid.414329.90000 0004 1764 7097Department of Radiotherapy, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
| | - Jing Yuan
- grid.414329.90000 0004 1764 7097Research Department, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong, Hong Kong SAR China
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Nabian N, Ghalehtaki R, Couñago F. Necessity of Pelvic Lymph Node Irradiation in Patients with Recurrent Prostate Cancer after Radical Prostatectomy in the PSMA PET/CT Era: A Narrative Review. Biomedicines 2022; 11:biomedicines11010038. [PMID: 36672547 PMCID: PMC9855373 DOI: 10.3390/biomedicines11010038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/16/2022] [Accepted: 11/23/2022] [Indexed: 12/28/2022] Open
Abstract
The main prostate cancer (PCa) treatments include surgery or radiotherapy (with or without ADT). However, none of the suggested treatments eliminates the risk of lymph node metastases. Conventional imaging methods, including MRI and CT scanning, are not sensitive enough for the diagnosis of lymph node metastases; however, the novel imaging method, PSMA PET/CT scanning, has provided valuable information about the pelvic LN involvement in patients with recurrent PCa (RPCa) after radical prostatectomy. The high sensitivity and negative predictive value enable accurate N staging in PCa patients. In this narrative review, we summarize the evidence on the treatment and extent of radiation in prostate-only or whole-pelvis radiation in patients with positive and negative LN involvement on PSMA PET/CT scans.
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Affiliation(s)
- Naeim Nabian
- Radiation Oncology Research Center, Cancer Research Institute, Tehran University of Medical Sciences, Tehran P.O. Box 1419733141, Iran
- Department of Radiation Oncology, Cancer Institute, Tehran University of Medical Sciences, Tehran P.O. Box 1419733141, Iran
| | - Reza Ghalehtaki
- Radiation Oncology Research Center, Cancer Research Institute, Tehran University of Medical Sciences, Tehran P.O. Box 1419733141, Iran
- Department of Radiation Oncology, Cancer Institute, Tehran University of Medical Sciences, Tehran P.O. Box 1419733141, Iran
- Correspondence:
| | - Felipe Couñago
- Department of Radiation Oncology, San Francisco de Asís and La Milagrosa Hospitals, GenesisCare, 28010 Madrid, Spain
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Management of Patients with Recurrent and Metachronous Oligometastatic Prostate Cancer in the Era of PSMA PET. Cancers (Basel) 2022; 14:cancers14246194. [PMID: 36551678 PMCID: PMC9777467 DOI: 10.3390/cancers14246194] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Prostate-specific membrane antigen (PSMA) positron emission tomography (PET) scans have higher sensitivity and specificity for detecting lymph nodes or metastatic disease relative to conventional imaging in prostate cancer staging. Since its FDA approval and incorporation into treatment guidelines, the use of PSMA PET has increased in patients undergoing initial staging, those with recurrence after initial definitive treatment, and patients with metastatic disease. Although the early detection of metastatic lesions is changing disease management, it is unclear whether this impact on management translates into clinical benefit. This review will summarize evidence pertaining to the change in patient management due to PSMA PET use and will discuss the implications of PSMA PET on treatment decisions in prostate cancer, particularly in the settings of biochemical recurrence and metachronous oligometastatic disease.
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Vogel MME, Düsberg M, Stöhrer L, Dewes S, Sage EK, Borm KJ, Gschwend JE, Eiber M, Combs SE, Schiller K. Prostate-specific Membrane Antigen Positron Emission Tomography/Computed Tomography-based Lymph Node Atlas for Salvage Radiotherapy in Patients with Recurrent Prostate Cancer: A Validation of the New NRG Oncology 2020 guideline. Eur Urol Oncol 2022; 5:668-676. [PMID: 36280446 DOI: 10.1016/j.euo.2022.09.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 09/07/2022] [Accepted: 09/30/2022] [Indexed: 01/26/2023]
Abstract
BACKGROUND Approximately 20-40% of patients with prostate cancer (PC) who undergo radical prostatectomy (RP) experience relapse, with the majority of these cases developing pelvic lymph node (LN) metastases. Taking new data from the prostate-specific membrane antigen (PSMA) positron emission tomography (PET) era into account, the Radiation Therapy Oncology Group (RTOG) 2009 contouring guideline for the pelvic LNs from 2009 was updated by the NRG Oncology group in 2020 (NRG 2020). OBJECTIVE To evaluate and validate the updated NRG 2020 guideline with our established LN atlas. DESIGN, SETTING, AND PARTICIPANTS We screened 1653 PSMA PET/computed tomography (CT) data sets for patients with biochemical relapse who underwent a PET scan between November 2012 and November 2017. After screening, we developed an LN atlas using data from 233 patients. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS We evaluated LN overlap (OL) with the RTOG 2009 and NRG 2020 contouring guidelines. OL was defined as within (>90%), partly within (10-90%), or outside (<10%). RESULTS AND LIMITATIONS In comparison to the RTOG 2009 guideline, 403 (52%), 134 (17%), and 241 (31%) of the LNs were not, were partly, or were fully covered within the overall group, respectively. By contrast, using the NRG 2020 guideline, 302 (39%), 190 (24%), and 286 (37%) of the LNs were not, were partly, or were fully covered, respectively (p < 0.001). Limitations include the retrospective design with missing data and no histopathological confirmation of the PET results. CONCLUSIONS The updated NRG 2020 contouring guideline improves coverage of the pelvic LNs in patients undergoing salvage radiation therapy. However, PET/CT should be considered whenever possible to ensure coverage of untypical LN spread. PATIENT SUMMARY We compared the 2009 and 2020 guidelines on the radiation area for the pelvis for patients with recurrent prostate cancer that has spread to lymph nodes. The newer guideline provides better coverage of pelvic lymph nodes than the older one and is useful in planning radiation therapy. However, a scan of the pelvis using the newest technique should be considered for individual patients to ensure coverage of untypical lymph nodes.
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Affiliation(s)
- Marco M E Vogel
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany.
| | - Mathias Düsberg
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Lucia Stöhrer
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Sabrina Dewes
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Eva K Sage
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Kai J Borm
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Jürgen E Gschwend
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Matthias Eiber
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
| | - Stephanie E Combs
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany; Institute for Radiation Medicine, Department of Radiation Sciences, Helmholtz Zentrum München, Neuherberg, Germany; Deutsches Konsortium für Translationale Krebsforschung, Munich Partner Site, Munich, Germany
| | - Kilian Schiller
- Department of Radiation Oncology, Klinikum rechts der Isar, Technical University of Munich (TUM), Munich, Germany
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Zilli T, Achard V, Dal Pra A, Schmidt-Hegemann N, Jereczek-Fossa BA, Lancia A, Ingrosso G, Alongi F, Aluwini S, Arcangeli S, Blanchard P, Conde Moreno A, Couñago F, Créhange G, Dirix P, Gomez Iturriaga A, Guckenberger M, Pasquier D, Sargos P, Scorsetti M, Supiot S, Tree AC, Zapatero A, Le Guevelou J, Ost P, Belka C. Recommendations for radiation therapy in oligometastatic prostate cancer: An ESTRO-ACROP Delphi consensus. Radiother Oncol 2022; 176:199-207. [PMID: 36228761 DOI: 10.1016/j.radonc.2022.10.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 10/07/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND PURPOSE Oligometastatic prostate cancer is a new and emerging treatment field with only few prospective randomized studies published so far. Despite the lack of strong level I evidence, metastasis-directed therapies (MDT) are widely used in clinical practice, mainly based on retrospective and small phase 2 studies and with a large difference across centers. Pending results of ongoing prospective randomized trials, there is a clear need for more consistent treatment indications and radiotherapy practices. MATERIAL AND METHODS A European Society for Radiotherapy and Oncology (ESTRO) Guidelines Committee consisting of radiation oncologists' experts in prostate cancer was asked to answer a dedicated questionnaire, including 41 questions on the main controversial issues with regard to oligometastatic prostate cancer. RESULTS The panel achieved consensus on patient selection and routine use of prostate-specific membrane antigen positron emission tomography (PSMA PET) imaging as preferred staging and restaging imaging. MDT strategies are recommended in the de novo oligometastatic, oligorecurrent and oligoprogressive disease setting for nodal, bone and visceral metastases. Radiation therapy doses, volumes and techniques were discussed and commented. CONCLUSION These recommendations have the purpose of providing standardization and consensus to optimize the radiotherapy treatment of oligometastatic prostate cancer until mature results of randomized trials are available.
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Affiliation(s)
- Thomas Zilli
- Department of Radiation Oncology, Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland; Department of Radiation Oncology, Geneva University Hospital, Geneva, Switzerland; Faculty of Medicine, Geneva University, Geneva, Switzerland.
| | - Vérane Achard
- Department of Radiation Oncology, Geneva University Hospital, Geneva, Switzerland; Faculty of Medicine, Geneva University, Geneva, Switzerland
| | - Alan Dal Pra
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL, United States
| | | | - Barbara Alicja Jereczek-Fossa
- Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy; Division of Radiotherapy, IEO European Institute of Oncology, IRCCS, Milan, Italy
| | - Andrea Lancia
- Department of Radiation Oncology, Policlinico San Matteo Pavia Fondazione IRCCS, Pavia, Italy
| | - Gianluca Ingrosso
- Department of Radiation Oncology, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Filippo Alongi
- Advanced Radiation Oncology Department, IRCCS Sacro Cuore Don Calabria Hospital, Cancer Care Center, Negrar di Valpolicella, Italy; University of Brescia, Brescia, Italy
| | - Shafak Aluwini
- Department of Radiation Oncology, University Medical Center Groningen, Groningen, the Netherlands
| | - Stefano Arcangeli
- Department of Radiation Oncology, School of Medicine and Surgery, University of Milan Bicocca, Milan, Italy
| | - Pierre Blanchard
- Université Paris Saclay, Villejuif, France; Inserm U1018 Oncostat, Department of Radiation Oncology, Gustave Roussy, Villejuif, France
| | - Antonio Conde Moreno
- Radiation Oncology Department, Hospital Universitario y Politécnico La Fe, Valencia, CEU Cardenal Herrera University, Castellón, Spain
| | - Felipe Couñago
- Department of Radiation Oncology, Hospital Universitario Quirónsalud Madrid, Madrid, Spain; Department of Radiation Oncology, Hospital La Luz, Madrid, Spain; Medicine Department, School of Biomedical Sciences, Universidad Europea, Villaviciosa de Odón, Madrid, Spain
| | - Gilles Créhange
- Department of Radiation Oncology, Institut Curie, Paris, France
| | - Piet Dirix
- Department of Radiation-Oncology, Iridium Network, Antwerp, Belgium
| | - Alfonso Gomez Iturriaga
- Biocruces Health Research Institute, Cruces University Hospital, Basque Country University (UPV/EHU), Barakaldo, Bizkaia, Spain
| | - Matthias Guckenberger
- Department of Radiation Oncology, University Hospital Zürich, University of Zürich, Zürich, Switzerland
| | - David Pasquier
- Academic Department of Radiation Oncology, Centre Oscar Lambret, Lille, France; CRIStAL UMR CNRS 9189, Lille University, Lille, France
| | - Paul Sargos
- Department of Radiotherapy, Institut Bergonié, Bordeaux, France
| | - Marta Scorsetti
- Radiotherapy and Radiosurgery Department, IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Stéphane Supiot
- Department of Radiation Oncology, Institut de Cancérologie de l'Ouest René Gauducheau, Saint-Herblain, France
| | - Alison C Tree
- Department of Radiotherapy, Royal Marsden NHS Foundation Trust and Institute of Cancer Research, London, United Kingdom
| | - Almudena Zapatero
- Department of Radiation Oncology, Health Research Institute, University Hospital La Princesa, Madrid, Spain
| | - Jennifer Le Guevelou
- Department of Radiation Oncology, Geneva University Hospital, Geneva, Switzerland; Faculty of Medicine, Geneva University, Geneva, Switzerland
| | - Piet Ost
- Department of Human Structure and Repair, Ghent University, Ghent, Belgium; Department of Radiation Oncology, Iridium Network, GZA ziekenhuizen, Wilrijk, Belgium
| | - Claus Belka
- Department of Radiation Oncology, LMU University Hospital Munich, Munich, Germany
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Murray J, Cruickshank C, Bird T, Bell P, Braun J, Chuter D, Ferreira MR, Griffin C, Hassan S, Hujairi N, Melcher A, Miles E, Naismith O, Panades M, Philipps L, Reid A, Rekowski J, Sankey P, Staffurth J, Syndikus I, Tree A, Wilkins A, Hall E. PEARLS - A multicentre phase II/III trial of extended field radiotherapy for androgen sensitive prostate cancer patients with PSMA-avid pelvic and/or para-aortic lymph nodes at presentation. Clin Transl Radiat Oncol 2022; 37:130-136. [PMID: 36238579 PMCID: PMC9550847 DOI: 10.1016/j.ctro.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 09/18/2022] [Indexed: 11/24/2022] Open
Abstract
PEARLS is a multi-stage randomised controlled trial for prostate cancer patients with pelvic and/or para-aortic PSMA-avid lymph node disease at presentation. The aim of the trial is to determine whether extending the radiotherapy field to cover the para-aortic lymph nodes (up to L1/L2 vertebral interspace) can improve outcomes for this patient group.
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Affiliation(s)
- Julia Murray
- The Royal Marsden NHS Foundation Trust, London, UK
- The Institute of Cancer Research, London, UK
| | | | - Thomas Bird
- University Hospitals Bristol & Weston NHS Foundation Trust, Bristol, UK
| | | | - John Braun
- RMH Radiotherapy Focus Group & RMH Biomedical Research Centre Consumer Group, Sutton, UK
| | - Dave Chuter
- NCRI Consumer Forum, London, UK
- NCRI Living With & Beyond Cancer (Acute and Toxicities Workstream), London, UK
| | | | | | | | | | - Alan Melcher
- The Royal Marsden NHS Foundation Trust, London, UK
- The Institute of Cancer Research, London, UK
| | - Elizabeth Miles
- Radiotherapy Trials QA Group (RTTQA), Mount Vernon Hospital, Northwood, UK
| | - Olivia Naismith
- Radiotherapy Trials QA Group (RTTQA), Royal Marsden NHS Foundation Trust, London, UK
| | | | - Lara Philipps
- The Royal Marsden NHS Foundation Trust, London, UK
- The Institute of Cancer Research, London, UK
| | - Alison Reid
- The Royal Marsden NHS Foundation Trust, London, UK
| | | | - Pete Sankey
- University Hospitals Plymouth NHS Trust, Plymouth, UK
| | - John Staffurth
- Velindre University NHS Trust and Cardiff University, Cardiff, UK
| | | | - Alison Tree
- The Royal Marsden NHS Foundation Trust, London, UK
- The Institute of Cancer Research, London, UK
| | - Anna Wilkins
- The Royal Marsden NHS Foundation Trust, London, UK
- The Institute of Cancer Research, London, UK
| | - Emma Hall
- The Institute of Cancer Research, London, UK
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Telarovic I, Yong CSM, Guckenberger M, Unkelbach J, Pruschy M. Radiation-induced lymphopenia does not impact treatment efficacy in a mouse tumor model. Neoplasia 2022; 31:100812. [PMID: 35667149 PMCID: PMC9168138 DOI: 10.1016/j.neo.2022.100812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 05/18/2022] [Accepted: 05/23/2022] [Indexed: 12/03/2022]
Abstract
Radiation-induced lymphopenia is a common occurrence in radiation oncology and an established negative prognostic factor, however the mechanisms underlying the relationship between lymphopenia and inferior survival remain elusive. The relevance of lymphocyte co-irradiation as critical normal tissue component at risk is an emerging topic of high clinical relevance, even more so in the context of potentially synergistic radiotherapy-immunotherapy combinations. The impact of the radiotherapy treatment volume on the lymphocytes of healthy and tumor-bearing mice was investigated in a novel mouse model of radiation-induced lymphopenia. Using an image-guided small-animal radiotherapy treatment platform, translationally relevant tumor-oriented volumes of irradiation with an anatomically defined increasing amount of normal tissue were irradiated, with a focus on the circulating blood and lymph nodes. In healthy mice, the influence of irradiation with increasing radiotherapy treatment volumes was quantified on the level of circulating blood cells and in the spleen. A significant decrease in the lymphocytes was observed in response to irradiation, including the minimally irradiated putative tumor area. The extent of lymphopenia correlated with the increasing volumes of irradiation. In tumor-bearing mice, differential radiotherapy treatment volumes did not influence the overall therapeutic response to radiotherapy alone. Intriguingly, an improved treatment efficacy in mice treated with draining-lymph node co-irradiation was observed in combination with an immune checkpoint inhibitor. Taken together, our study reveals compelling data on the importance of radiotherapy treatment volume in the context of lymphocytes as critical components of normal tissue co-irradiation and highlights emerging challenges at the interface of radiotherapy and immunotherapy.
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Affiliation(s)
- Irma Telarovic
- Laboratory for Applied Radiobiology, Dept. Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Carmen S M Yong
- Laboratory for Applied Radiobiology, Dept. Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland; Dept. Immunology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Matthias Guckenberger
- Dept. Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Jan Unkelbach
- Dept. Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Martin Pruschy
- Laboratory for Applied Radiobiology, Dept. Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
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Chopade P, Maitre P, David S, Panigrahi G, Singh P, Phurailatpam R, Murthy V. Common iliac node positive prostate cancer treated with curative radiotherapy: N1 or M1a? Int J Radiat Oncol Biol Phys 2022; 114:711-717. [PMID: 35870708 DOI: 10.1016/j.ijrobp.2022.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/06/2022] [Accepted: 07/13/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE Common iliac (CI) nodes are staged as (oligo)metastatic M1a for prostate cancer. It is unclear if outcomes of pelvic node-positive (cN1) differ from CI node-positive (CI-M1a) prostate cancer after curative treatment. Present study compares outcomes in these patients treated with radical whole pelvic radiotherapy and long-term ADT. MATERIALS AND METHODS Patients with node positive adenocarcinoma prostate were identified, either CI-M1a or cN1, from a prospectively maintained database. Over 75% of these patients were staged with Ga68PSMA-PETCT at diagnosis. All patients received long-term ADT and moderately or extremely hypofractionated radiotherapy to the prostate and pelvis including the CI region. At biochemical failure (BCF), restaging was done with Ga68PSMA-PETCT to establish the patterns of failure. CI-M1a cohort was classified as proximal or distal CI nodal location and studied for outcomes. RESULTS Of the 130 patients analyzed, 87 had cN1 and 43 had CI-M1a stage. Median duration of ADT before RT was 7 months and total duration was atleast 24 months. Majority (65%) had Gleason grade group IV-V while 75% had ≥T3 disease. After a median FU of 61 months, BCF in the 2 groups were similar, cN1, 21/87 (24.1%); CI-M1a, 11/43 (25.6%), p=0.86. At BCF, restaging Ga68-PSMA-PET-CT located distant metastases in 20 (63%) of the 32 patients (57% in cN1, and 73% in CI-M1a, p=0.47). Five-year biochemical failure-free survival (cN1; 77.4% and CI-M1a; 70.4%, p=0.43), distant metastasis-free survival (cN1; 86.9% and CI-M1a; 79.4%, p=0.23) and overall survival (cN1 92.6% and CI-M1a 90.1%, p=0.80) were similar in the two groups. Outcomes within CI-M1a were similar for proximal versus distal CI nodal location, 5-year BFFS 73.6% vs 58.6% (p=0.81). CONCLUSION Oligometastatic CI-M1a and cN1 prostate cancer patients showed similar outcomes when treated with curative whole pelvic radiotherapy and long-term ADT. The treatment for these 'oligometastatic' patients should be prospectively evaluated and optimized accordingly.
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Affiliation(s)
- Pradnya Chopade
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Homi Bhabha National Institute, Parel, Mumbai, Maharashtra, India
| | - Priyamvada Maitre
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Homi Bhabha National Institute, Parel, Mumbai, Maharashtra, India
| | - Sam David
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Homi Bhabha National Institute, Parel, Mumbai, Maharashtra, India
| | - Gitanjali Panigrahi
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Homi Bhabha National Institute, Parel, Mumbai, Maharashtra, India
| | - Pallavi Singh
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Homi Bhabha National Institute, Parel, Mumbai, Maharashtra, India
| | - Reena Phurailatpam
- Department of Medical Physics, Tata Memorial Hospital, Tata Memorial Centre, Homi Bhabha National Institute, Parel, Mumbai, Maharashtra, India
| | - Vedang Murthy
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Homi Bhabha National Institute, Parel, Mumbai, Maharashtra, India.
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Poon DMC, Yuan J, Yang B, Wong OL, Chiu ST, Chiu G, Cheung KY, Yu SK, Yung RWH. A Prospective Study of Stereotactic Body Radiotherapy (SBRT) with Concomitant Whole-Pelvic Radiotherapy (WPRT) for High-Risk Localized Prostate Cancer Patients Using 1.5 Tesla Magnetic Resonance Guidance: The Preliminary Clinical Outcome. Cancers (Basel) 2022; 14:cancers14143484. [PMID: 35884553 PMCID: PMC9321843 DOI: 10.3390/cancers14143484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 12/10/2022] Open
Abstract
Background: Conventionally fractionated whole-pelvic nodal radiotherapy (WPRT) improves clinical outcome compared to prostate-only RT in high-risk prostate cancer (HR-PC). MR-guided stereotactic body radiotherapy (MRgSBRT) with concomitant WPRT represents a novel radiotherapy (RT) paradigm for HR-PC, potentially improving online image guidance and clinical outcomes. This study aims to report the preliminary clinical experiences and treatment outcome of 1.5 Tesla adaptive MRgSBRT with concomitant WPRT in HR-PC patients. Materials and methods: Forty-two consecutive HR-PC patients (72.5 ± 6.8 years) were prospectively enrolled, treated by online adaptive MRgSBRT (8 Gy(prostate)/5 Gy(WPRT) × 5 fractions) combined with androgen deprivation therapy (ADT) and followed up (median: 251 days, range: 20−609 days). Clinical outcomes were measured by gastrointestinal (GI) and genitourinary (GU) toxicities according to the Common Terminology Criteria for Adverse Events (CTCAE) Scale v. 5.0, patient-reported quality of life (QoL) with EPIC (Expanded Prostate Cancer Index Composite) questionnaire, and prostate-specific antigen (PSA) responses. Results: All MRgSBRT fractions achieved planning objectives and dose specifications of the targets and organs at risk, and they were successfully delivered. The maximum cumulative acute GI/GU grade 1 and 2 toxicity rates were 19.0%/81.0% and 2.4%/7.1%, respectively. The subacute (>30 days) GI/GU grade 1 and 2 toxicity rates were 21.4%/64.3% and 2.4%/2.4%, respectively. No grade 3 toxicities were reported. QoL showed insignificant changes in urinary, bowel, sexual, and hormonal domain scores during the follow-up period. All patients had early post-MRgSBRT biochemical responses, while biochemical recurrence (PSA nadir + 2 ng/mL) occurred in one patient at month 18. Conclusions: To our knowledge, this is the first prospective study that showed the clinical outcomes of MRgSBRT with concomitant WPRT in HR-PC patients. The early results suggested favorable treatment-related toxicities and encouraging patient-reported QoLs, but long-term follow-up is needed to confirm our early results.
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Affiliation(s)
- Darren M C Poon
- Comprehensive Oncology Centre, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Jing Yuan
- Research Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Bin Yang
- Medical Physics Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Oi-Lei Wong
- Research Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Sin-Ting Chiu
- Department of Radiotherapy, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - George Chiu
- Department of Radiotherapy, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Kin-Yin Cheung
- Medical Physics Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Siu-Ki Yu
- Medical Physics Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Raymond W H Yung
- Research Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
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Correa RJM, Loblaw A. Stereotactic Body Radiotherapy: Hitting Harder, Faster, and Smarter in High-Risk Prostate Cancer. Front Oncol 2022; 12:889132. [PMID: 35875062 PMCID: PMC9301671 DOI: 10.3389/fonc.2022.889132] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/31/2022] [Indexed: 11/30/2022] Open
Abstract
Stereotactic body radiotherapy (SBRT) is a technologically sophisticated form of radiotherapy that holds significant potential to effectively treat high-risk prostate cancer (HRPC). Prostate SBRT has been the subject of intense investigation in the context of low- and intermediate-risk disease, but less so for HRPC. However, emerging data are demonstrating its potential to safely and efficiently delivery curative doses of radiotherapy, both to the prostate and elective lymph nodes. SBRT theoretically hits harder through radiobiological dose escalation facilitated by ultra-hypofractionation (UHRT), faster with only five treatment fractions, and smarter by using targeted, focal dose escalation to maximally ablate the dominant intraprostatic lesion (while maximally protecting normal tissues). To achieve this, advanced imaging modalities like magnetic resonance imaging and prostate specific membrane antigen positron emmission tomography (PSMA-PET) are leveraged in combination with cutting-edge radiotherapy planning and delivery technology. In this focused narrative review, we discuss key evidence and upcoming clinical trials evaluating SBRT for HRPC with a focus on dose escalation, elective nodal irradiation, and focal boost.
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Affiliation(s)
- Rohann J. M. Correa
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
- Division of Radiation Oncology, Department of Oncology, Western University and London Health Sciences Centre, London, Canada
| | - Andrew Loblaw
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
- Department of Health Policy, Measurement and Evaluation, University of Toronto, Toronto, Canada
- *Correspondence: Andrew Loblaw,
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48
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Verghote F, Sargos P, Christodouleas JP, Murthy V, Baumann BC, Dirix P, Berghen C, Paelinck L, Vercauteren T, Fonteyne V. International Consensus Guidelines for Adjuvant Radiation Therapy for Bladder Cancer After Radical Cystectomy: Update From an IBIS Workgroup. Pract Radiat Oncol 2022; 12:524-532. [PMID: 35691550 DOI: 10.1016/j.prro.2022.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 05/26/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE In 2016, international consensus clinical target volume (CTV) guidelines for adjuvant radiation treatment (ART) after radical cystectomy (RC) in muscle-invasive bladder cancer patients with high risk for locoregional failure (LRF) were published. A subsequent external validation study recommended several CTV optimizations (CTV-OPT). This study aimed to update international consensus guidelines based on new clinical experiences. METHODS AND MATERIALS Phase 1 (delineation interobserver variability): 4 observers delineated the CTV of 9 patients post-RC, as in clinical practice. Interobserver agreement in contouring was evaluated using volume- and kappa-statistics. Phase 2 (pattern of failure analysis): Among a prospective cohort of 72 patients treated with ART, 11 developed LRF (10 available for review). LRFs were mapped in predefined pelvic subsites (i.e. common, external and internal iliac, obturator and presacral node regions and cystectomy bed) and their distance to CTV-OPT was measured. The actual delivered dose at each relapse site was calculated. Phase 3 (review CTV): Based on the results of phase 1 and 2, 5 senior radiation-oncologists (XXXX) reviewed the published CTV borders and provided an update when indicated. RESULTS Phase 1: The mean overall kappa-value was 0.66 (range: 0.60-0.70), indicating substantial overall agreement per Landis-Koch criteria. Specific kappa-values per area indicated for the common iliac and obturator node regions only slight and moderate variability, respectively. Phase 2: 13 out of 16 LRFs centers were not included in the CTV-OPT. 10 LRF sites received a median dose <45Gy, of which 6 were located in the cystectomy bed that was not included in the CTV because of negative RC margins. Phase 3: Key recommendations by the panel were to include the entire common iliac node region and the cystectomy bed regardless of surgical margin status and re-affirmed to not crop the CTV out of bowel. CONCLUSION International consensus guidelines were updated.
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Affiliation(s)
- Flor Verghote
- Department of Radiotherapy-Oncology, Ghent University Hospital, Ghent, Belgium.; Department of Human Structure and Repair, Ghent University, Ghent, Belgium..
| | - Paul Sargos
- Department of Radiotherapy, Institut Bergonié, Bordeaux, France
| | - John P Christodouleas
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Vedang Murthy
- Department of Radiation Oncology, ACTREC, Tata Memorial Centre, HBNI, Mumbai, India
| | - Brian C Baumann
- Department of Radiation Oncology, Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - Piet Dirix
- Department of Radiation-Oncology, Iridium Network, Antwerp, Belgium
| | - Charlien Berghen
- Department of Radiation-Oncology, University Hospitals Leuven, Leuven, Belgium
| | - Leen Paelinck
- Department of Radiotherapy-Oncology, Ghent University Hospital, Ghent, Belgium
| | - Tom Vercauteren
- Department of Radiotherapy-Oncology, Ghent University Hospital, Ghent, Belgium
| | - Valérie Fonteyne
- Department of Radiotherapy-Oncology, Ghent University Hospital, Ghent, Belgium.; Department of Human Structure and Repair, Ghent University, Ghent, Belgium
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Spohn SK, Birkenmaier V, Ruf J, Mix M, Sigle A, Haehl E, Adebahr S, Sprave T, Gkika E, Rühle A, Nicolay NH, Kirste S, Grosu AL, Zamboglou C. Risk Factors for Biochemical Recurrence After PSMA-PET-Guided Definitive Radiotherapy in Patients With De Novo Lymph Node-Positive Prostate Cancer. Front Oncol 2022; 12:898774. [PMID: 35747822 PMCID: PMC9209705 DOI: 10.3389/fonc.2022.898774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/02/2022] [Indexed: 11/16/2022] Open
Abstract
Introduction The National Comprehensive Cancer Network recommends external beam radiotherapy (EBRT) combined with androgen deprivation therapy (ADT) as the preferred treatment option for newly diagnosed node-positive (cN1) prostate cancer (PCa) patients. However, implementation of positron emission tomography targeting prostate-specific membrane antigen (PSMA-PET) in the staging of primary PCa patients has a significant impact on RT treatment concepts. This study aims to evaluate outcomes and their respective risk factors on patients with PSMA-PET-based cN1 and/or cM1a PCa receiving primary RT and ADT. Methods Forty-eight patients with cN0 and/or cM1a PCa staged by [18F]PSMA-1007-PET (n = 19) or [68Ga]PSMA-11-PET (n = 29) were retrospectively included. All patients received EBRT to the pelvis ± boost to positive nodes, followed by boost to the prostate. The impact of different PET-derived characteristics such as maximum standard uptake value (SUVmax) and number of PET-positive lymph nodes on biochemical recurrence-free survival (BRFS) (Phoenix criteria) and metastasis-free survival (MFS) was determined using Kaplan–Meier and Cox proportional hazard regression analyses. Results Median follow-up was 24 months. Median initial serum prostate-specific antigen was 20.2 ng/ml (IQR 10.2–54.2). Most patients had cT stage ≥ 3 (63%) and ISUP grade ≥ 3 (85%). Median dose to the prostate, elective nodes, and PET-positive nodes was 75 Gy, 45 Gy, and 55 Gy, respectively. Ninety percent of patients received ADT with a median duration of 9 months (IQR 6–18). In univariate analysis, cM1a stage (p = 0.03), number of >2 pelvic nodes (p = 0.01), number of >1 abdominal node (p = 0.02), and SUVmax values ≥ median (8.1 g/ml for 68Ga-PSMA-11 and 7.9 g/ml for 18F-PSMA-1007) extracted from lymph nodes were significantly associated with unfavorable BRFS, but classical clinicopathological features were not. Number of >2 pelvic nodes (n = 0.03), number of >1 abdominal node (p = 0.03), and SUVmax values ≥ median extracted from lymph nodes were associated with unfavorable MFS. In multivariate analysis, number of >2 pelvic lymph nodes was significantly associated with unfavorable BRFS (HR 5.2, p = 0.01) and SUVmax values ≥ median extracted from lymph nodes had unfavorable MFS (HR 6.3, p = 0.02). Conclusion More than 2 PET-positive pelvic lymph nodes are associated with unfavorable BRFS, and high SUVmax values are associated with unfavorable MFS. Thus, the number of PET-positive lymph nodes and the SUVmax value might be relevant prognosticators to identify patients with favorable outcomes.
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Affiliation(s)
- Simon K.B. Spohn
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
- Berta-Ottenstein-Programme, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- *Correspondence: Simon K.B. Spohn,
| | - Viktoria Birkenmaier
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Juri Ruf
- Department of Nuclear Medicine, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Michael Mix
- Department of Nuclear Medicine, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - August Sigle
- Department of Urology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Erik Haehl
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
| | - Sonja Adebahr
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
| | - Tanja Sprave
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
| | - Eleni Gkika
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
| | - Alexander Rühle
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
| | - Nils H. Nicolay
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
| | - Simon Kirste
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
| | - Anca L. Grosu
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
| | - Constantinos Zamboglou
- Department of Radiation Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Freiburg, Germany
- Berta-Ottenstein-Programme, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Oncology Center, European University Cyprus, Limassol, Cyprus
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50
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Andruska N, Fischer-Valuck BW, Waters M, Diaz EJ, Agabalogun T, Kim EH, Smith ZL, Brenneman R, Gay HA, Andriole GL, Michalski JM, Baumann BC. Survival Outcomes in Men with Unfavorable Intermediate-Risk and High-Risk Prostate Cancer Treated with Prostate-Only versus Whole Pelvic Radiation Therapy. J Urol 2022; 207:1227-1235. [PMID: 35085038 PMCID: PMC9169570 DOI: 10.1097/ju.0000000000002455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE Men with unfavorable intermediate-risk (UIR-PCa) or high-risk prostate cancer (HR-PCa) are often treated with definitive external beam radiotherapy (EBRT) plus androgen deprivation therapy. Treatment is frequently intensified by electively treating the pelvic lymph nodes (LNs) with whole pelvis radiotherapy (WPRT), but practice patterns and the benefits of WPRT are not well defined. We hypothesized that men treated with WPRT would have improved overall survival (OS) relative to men treated with prostate-only radiotherapy. MATERIALS AND METHODS National Cancer Database records of men diagnosed between 2008-2015 with UIR-PCa or HR-PCa and treated with prostate EBRT±androgen deprivation therapy (72-86.4 Gy) with (15,175) or without (13,549) WPRT were reviewed. Risk of LN involvement was calculated using the Memorial Sloan Kettering Cancer Center nomogram. Measured confounders were balanced with inverse probability of treatment weighting and OS hazard ratios (HRs) were generated using multivariable Cox regression. RESULTS Of the men, 53% received WPRT. Every 1% increase in risk of LN involvement correlated with a 1% increase in risk of death (p <0.001). WPRT trended toward improved OS in all men with UIR-PCa and HR-PCa (HR: 0.95 [95% CI: 0.90-1.006], p=0.055). WPRT correlated with improved OS in men with Gleason 9 and 10 disease (HR: 0.87 [0.78-0.98], p=0.02) or risk of LN involvement ≥10% (HR: 0.93 [0.87-0.99], p=0.03). CONCLUSIONS Men with higher LN risk scores and Gleason grade benefited from WPRT. These results complement the recent POP-RT randomized trial in mostly positron emission tomography/computerized tomography-staged patients, demonstrating that a more heterogeneous population of men staged without functional imaging benefits from WPRT.
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Affiliation(s)
- Neal Andruska
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
| | | | - Michael Waters
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
| | - Elizabeth Juarez Diaz
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO
| | - Temitope Agabalogun
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO
| | - Eric H. Kim
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
- Division of Urology, Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Zachary L Smith
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
- Division of Urology, Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Randall Brenneman
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
| | - Hiram A. Gay
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
| | - Gerald L. Andriole
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
- Division of Urology, Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Jeff M. Michalski
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
| | - Brian C. Baumann
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO
- Siteman Cancer Center, Barnes Jewish Hospital and Washington University School of Medicine, St. Louis, MO
- Department of Radiation Oncology, University of Pennsylvania School of Medicine, Philadelphia, PA
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