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Latorzeff I, Camps-Maléa A, Supiot S, de Crevoisier R, Farcy-Jacquet MP, Hannoun-Lévi JM, Riou O, Pommier P, Artignan X, Chapet O, Créhange G, Marchesi V, Pasquier D, Sargos P. Indication and perspectives of radiation therapy in the setting of de-novo metastatic prostate cancer. Cancer Radiother 2024; 28:49-55. [PMID: 37827959 DOI: 10.1016/j.canrad.2023.05.004] [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: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 10/14/2023]
Abstract
Prostate cancer is the most common cancer and the third leading cause of cancer mortality in men. Each year, approximately 10% of prostate cancers are diagnosed metastatic at initial presentation. The standard treatment option for de-novo metastatic prostate cancer is androgen deprivation therapy with novel hormonal agent or with chemotherapy. Recently, PEACE-1 trial highlighted the benefit of triplet therapy resulting in the combination of androgen deprivation therapy combined with docetaxel and abiraterone. Radiotherapy can be proposed in a curative intent or to treat local symptomatic disease. Nowadays, radiotherapy of the primary disease is only recommended for de novo low-burden/low-volume metastatic prostate cancer, as defined in the CHAARTED criteria. However, studies on stereotactic radiotherapy on oligometastases have shown that this therapeutic approach is feasible and well tolerated. Prospective research currently focuses on the benefit of intensification by combining treatment of the metastatic sites and the primary all together. The contribution of metabolic imaging to better define the target volumes and specify the oligometastatic character allows a better selection of patients. This article aims to define indications of radiotherapy and perspectives of this therapeutic option for de-novo metastatic prostate cancer.
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Affiliation(s)
- I Latorzeff
- Department of Radiation Oncology, clinique Pasteur, Toulouse, France.
| | - A Camps-Maléa
- Department of Radiation Oncology, hôpital Bretonneau, CHU de Tours, Tours, France
| | - S Supiot
- Department of Radiation Oncology, institut de cancérologie de l'Ouest centre René-Gauducheau, Saint-Herblain, France; CNRS, Nantes, France; Université de Nantes, Nantes, France
| | - R de Crevoisier
- Department of Radiation Oncology, centre Eugène-Marquis, Rennes, France
| | - M-P Farcy-Jacquet
- Fédération universitaire d'oncologie radiothérapie, institut de cancérologie du Gard, CHU de Nîmes, Nîmes, France
| | - J-M Hannoun-Lévi
- Department of Radiation Oncology, centre Antoine-Lacassagne, Nice, France
| | - O Riou
- Department of Radiation Oncology, institut du cancer de Montpellier, Montpellier, France; Fédération universitaire d'oncologie radiothérapie de Méditerranée Occitanie, université de Montpellier, Montpellier, France; U1194, Inserm, Montpellier, France; IRCM, Montpellier, France
| | - P Pommier
- Department of Radiation Oncology, institut de cancérologie de l'Ouest, Angers, France
| | - X Artignan
- Department of Radiation Oncology, centre hospitalier privé Saint-Grégoire, Rennes, France
| | - O Chapet
- Department of Radiation Oncology, centre hospitalier Lyon Sud, Pierre-Bénite, France
| | - G Créhange
- Department of Radiation Oncology, institut Curie, Saint-Cloud, France
| | - V Marchesi
- Department of Medical Physics, centre Alexis-Vautrin, Vandœuvre-lès-Nancy, France
| | - D Pasquier
- Academic Department of Radiation Oncology, centre Oscar-Lambret, Lille, France; UMR 9189 - CRIStAL, université de Lille, CNRS, école Centrale Lille, 59000 Lille, France
| | - P Sargos
- Department of Radiotherapy, institut Bergonié, Bordeaux, France
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Kwon DH, Shakhnazaryan N, Shui D, Hong JC, Mohamad O, de Kouchkovsky I, Borno HT, Bose R, Chou J, Desai A, Fong L, Friedlander TW, Koshkin VS, Aggarwal RR, Feng FY, Hope TA, Small EJ. Serial stereotactic body radiation therapy for oligometastatic prostate cancer detected by novel PET-based radiotracers. Urol Oncol 2023; 41:145.e7-145.e15. [PMID: 36435709 DOI: 10.1016/j.urolonc.2022.10.025] [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: 09/15/2022] [Revised: 10/21/2022] [Accepted: 10/28/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Radiopharmaceuticals, including Ga-68-prostate specific membrane antigen (PSMA)-11 and F-18-Fluciclovine, are increasingly used to inform therapies for prostate cancer (CaP). Stereotactic body radiation therapy (SBRT) to PET-detected oligometastatic CaP has been shown to improve progression free survival (PFS) and delay androgen deprivation therapy (ADT) compared to observation. For men who subsequently develop oligorecurrent CaP, outcomes following second SBRT are unknown. METHODS A retrospective cohort study was conducted. Eligibility criteria included patients with oligometastatic (1-5 lesions) CaP detected on PSMA or Fluciclovine PET who underwent 2 consecutive SBRT courses to tracer-avid sites. Data on stage, tracer type, concurrent systemic therapy, and prostate-specific antigen (PSA) responses for first SBRT (SBRT1) and second SBRT (SBRT2) were collected. Outcomes included PSA decline ≥50% (PSA50), PFS after SBRT2, and ADT initiation or intensification-free survival after SBRT2. Factors potentially associated with PSA50 after SBRT2 was evaluated with multivariable logistic regression. Factors potentially associated with PFS and ADT initiation/intensification-free survival after SBRT2 were evaluated with separate multivariable Cox proportional-hazards models. RESULTS Twenty-five patients were identified. At SBRT2, oligorecurrence was detected on PSMA and Fluciclovine PET in 17 (68%) and 8 (32%) patients, respectively. Fifteen (60%) patients had castration-sensitive disease and 10 (40%) had castration-resistant disease. After SBRT2, 16 (64%) achieved a PSA50 response, median PFS was 11.0mo, and median ADT initiation/intensification-free survival was 23.2mo. On multivariable analysis, maximum percent change in PSA after SBRT1 (OR 0.94, 95%CI 0.88-0.99, P = 0.046) and concurrent change in systemic therapy (OR 21.61, 95%CI 1.12-417.9, P = 0.042) were associated with PSA50 responses after SBRT2. PSA50 response after SBRT1 was associated with improved PFS (HR 0.36, 95%CI 0.00-0.42, P = 0.008) and ADT initiation/intensification-free survival (HR 0.07, 95%CI 0.01-0.68, P = 0.021) after SBRT2. From SBRT1 to last follow-up (median 48 months), 7 (28%) patients remained ADT-free. CONCLUSIONS Serial SBRT for oligometastatic CaP detected on PSMA or Fluciclovine PET is feasible and can achieve PSA declines, with or without systemic therapy. Degree of biochemical response to first SBRT warrants further study as a potential predictor of PSA response, PFS, and ADT initiation/intensification-free survival following a subsequent SBRT course. This preliminary evidence provides rationale for larger, prospective studies of this strategy.
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Affiliation(s)
- Daniel H Kwon
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA.
| | - Nonna Shakhnazaryan
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - David Shui
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Julian C Hong
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA; Department of Radiation Oncology, University of California, San Francisco, CA; Bakar Computational Health Sciences Institute, University of California, San Francisco, CA
| | - Osama Mohamad
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA; Department of Radiation Oncology, University of California, San Francisco, CA; Department of Urology, University of California, San Francisco, CA
| | - Ivan de Kouchkovsky
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Hala T Borno
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Rohit Bose
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Jonathan Chou
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Arpita Desai
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Lawrence Fong
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Terence W Friedlander
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Vadim S Koshkin
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Rahul R Aggarwal
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
| | - Felix Y Feng
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA; Department of Radiation Oncology, University of California, San Francisco, CA
| | - Thomas A Hope
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA; Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA
| | - Eric J Small
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, CA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA
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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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Muacevic A, Adler JR, Nittala MR, Velazquez AE, Huddleston BL, Rugnath NA, Adari N, Yajurvedi AK, Komanduri A, Yang CC, Duggar WN, Berlin WP, Duszak R, Vijayakumar V. Changing Role of PET/CT in Cancer Care With a Focus on Radiotherapy. Cureus 2022; 14:e32840. [PMID: 36694538 PMCID: PMC9867792 DOI: 10.7759/cureus.32840] [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] [Accepted: 12/22/2022] [Indexed: 12/24/2022] Open
Abstract
Positron emission tomography (PET) integrated with computed tomography (CT) has brought revolutionary changes in improving cancer care (CC) for patients. These include improved detection of previously unrecognizable disease, ability to identify oligometastatic status enabling more aggressive treatment strategies when the disease burden is lower, its use in better defining treatment targets in radiotherapy (RT), ability to monitor treatment responses early and thus improve the ability for early interventions of non-responding tumors, and as a prognosticating tool as well as outcome predicting tool. PET/CT has enabled the emergence of new concepts such as radiobiotherapy (RBT), radioimmunotherapy, theranostics, and pharmaco-radiotherapy. This is a rapidly evolving field, and this primer is to help summarize the current status and to give an impetus to developing new ideas, clinical trials, and CC outcome improvements.
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5
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Chen J, Qi L, Tang Y, Tang G, Gan Y, Cai Y. Current role of prostate-specific membrane antigen-based imaging and radioligand therapy in castration-resistant prostate cancer. Front Cell Dev Biol 2022; 10:958180. [PMID: 36036001 PMCID: PMC9411749 DOI: 10.3389/fcell.2022.958180] [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: 05/31/2022] [Accepted: 07/11/2022] [Indexed: 11/29/2022] Open
Abstract
Castration-resistant prostate cancer (CRPC) is a therapy-resistant and lethal form of prostate cancer as well as a therapeutic challenge. Prostate-specific membrane antigen (PSMA) has been proved as a promising molecular target for optimizing the theranostics for CRPC patients. When combined with PSMA radiotracers, novel molecular imaging techniques such as positron emission tomography (PET) can provide more accurate and expedient identification of metastases when compared with conventional imaging techniques. Based on the PSMA-based PET scans, the accurate visualization of local and disseminative lesions may help in metastasis-directed therapy. Moreover, the combination of 68Ga-labeled PSMA-based PET imaging and radiotherapy using PSMA radioligand therapy (RLT) becomes a novel treatment option for CRPC patients. The existing studies have demonstrated this therapeutic strategy as an effective and well-tolerated therapy among CRPC patients. PSMA-based PET imaging can accurately detect CRPC lesions and describe their molecular features with quantitative parameters, which can be used to select the best choice of treatments, monitor the response, and predict the outcome of RLT. This review discussed the current and potential role of PSMA‐based imaging and RLT in the diagnosis, treatment, and prediction of prognosis of CRPC.
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Affiliation(s)
- Jiaxian Chen
- Department of Urology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Lin Qi
- Department of Urology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Yongxiang Tang
- Department of PET Center, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Guyu Tang
- Department of Urology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Yu Gan
- Department of Urology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- *Correspondence: Yu Gan, ; Yi Cai,
| | - Yi Cai
- Department of Urology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- *Correspondence: Yu Gan, ; Yi Cai,
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Baboudjian M, Gauthé M, Barret E, Brureau L, Rocchi P, Créhange G, Dariane C, Fiard G, Fromont G, Beauval JB, Mathieu R, Renard-Penna R, Roubaud G, Ruffion A, Sargos P, Rouprêt M, Ploussard G. How PET-CT is Changing the Management of Non-metastatic Castration-resistant Prostate Cancer?: Comment la TEP-TDM Peut Modifier la Prise en Charge du Cancer de la Prostate Non Métastatique Résistant à la Castration ? Prog Urol 2022; 32:6S43-6S53. [PMID: 36719646 DOI: 10.1016/s1166-7087(22)00174-9] [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: 02/03/2023]
Abstract
INTRODUCTION The aim of this narrative review conducted by the Prostate Cancer Committee of the French Association of Urology (CC-AFU) was to provide an update on the current evidence for the impact of PET/CT in the management of men with non-metastatic castration-resistant prostate cancer (nmCRPC). MATERIAL AND METHODS This review is based on data available in the literature on PET/CT imaging for staging nmCRPC patients. A PubMed search and narrative review of the data were performed in March 2022. Only articles in French or English were considered. RESULTS Current guidelines recommend bone scan and CT scan as standard imaging modalities for staging and follow-up of patients with nmCRPC. Nearly one-third of asymptomatic patients with presumed nmCRPC ultimately have metastatic disease on conventional imaging. Increasing reports have shown that conventional imaging has limited accuracy in detecting metastatic disease in nmCRPC patients, leading to the development of next-generation imaging techniques. In a retrospective study, 18F-choline PET/CT detected distant metastases in 27/58 high-risk nmCRPC patients with prior negative conventional imaging. The implementation of radiolabeled ligands of the prostate-specific membrane antigen (PSMA) PET/CT in staging strategy has resulted in metastasis detection in 45% to 98% of patients with presumptive nmCRPC on conventional imaging. Such an early diagnosis of metastatic CRPC may allow patients to be referred for metastasis-directed therapies (i.e. stereotactic body radiotherapy), aimed at prolonging the efficacy of systemic therapies and improving clinical outcomes. However, current data are not strong enough to recommend this strategy, which must be properly evaluated in clinical trials. Indeed, the use of molecular imaging may lead to inappropriate undertreatment if the second-generation androgen receptor inhibitors (darolutamide, enzalutamide, apalutamide), which prolong life, are not used in the subgroup of patients with high PSA velocity (PSA doubling time <10 months). CONCLUSION Implementation of PSMA-PET/CT in the staging strategy would result in a migration of disease stage to extra-pelvic, M1 disease in at least half of presumed nmCRPC patients. The unprecedented accuracy of PSMA-PET/CT may pave the way for a more personalized treatment strategy. However, no data yet support this strategy for all nmCRPC patients as no oncologic benefit of early detection of M1 disease or MDT has been demonstrated. © 2022 Elsevier Masson SAS. All rights reserved.
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Affiliation(s)
- M Baboudjian
- Department of Urology, APHM, North Academic Hospital, Marseille, France; Marseille Cancerology Research Center-Inserm UMR 1068, Aix-Marseille Université U105-CNRS UMR 7258, CERIMED Bât.10A - 27 Boulevard Jean Moulin - 13005 Marseille, France; Department of Urology, Fundació Puigvert, Autonoma University of Barcelona, Barcelona, Spain.
| | - M Gauthé
- Department of Nuclear Medicine, Scintep - Institut Daniel Hollard, Grenoble, France
| | - E Barret
- Department of Urology, Institut Mutualiste Montsouris, Paris, France
| | - L Brureau
- Department of Urology, CHU de Pointe-à-Pitre, University of Antilles, University of Rennes, Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, F-97110 Pointe-à-Pitre, France
| | - P Rocchi
- Marseille Cancerology Research Center-Inserm UMR 1068, Aix-Marseille Université U105-CNRS UMR 7258, CERIMED Bât.10A - 27 Boulevard Jean Moulin - 13005 Marseille, France
| | - G Créhange
- Department of Radiotherapy, Institut Curie, Paris, France
| | - C Dariane
- Department of Urology, Hôpital européen Georges-Pompidou, APHP, Paris - Paris University - U1151 Inserm-INEM, Necker, Paris, France
| | - G Fiard
- Department of Urology, Grenoble Alpes University Hospital, Université Grenoble Alpes, CNRS, Grenoble INP, TIMC-IMAG, Grenoble, France
| | - G Fromont
- Department of Pathology, CHRU Tours, Tours, France
| | - J-B Beauval
- Department of Urology, La Croix du Sud Hôpital, Quint Fonsegrives, France
| | - R Mathieu
- Department of Urology, CHU Rennes, Rennes, France
| | - R Renard-Penna
- Sorbonne University, AP-HP, Radiology, Pitie-Salpetriere Hospital, F-75013 Paris, France
| | - G Roubaud
- Department of Medical Oncology, Institut Bergonié, 33000 Bordeaux, France
| | - A Ruffion
- Service d'urologie Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France; Equipe 2 - Centre d'Innovation en cancérologie de Lyon (EA 3738 CICLY) - Faculté de médecine Lyon Sud - Université Lyon 1
| | - P Sargos
- Department of Radiotherapy, Institut Bergonié, 33000 Bordeaux, France
| | - M Rouprêt
- Sorbonne University, GRC 5 Predictive Onco-Uro, AP-HP, Urology, Pitie-Salpetriere Hospital, F-75013 Paris, France
| | - G Ploussard
- Department of Urology, La Croix du Sud Hôpital, Quint Fonsegrives, France; Department of Urology, Institut Universitaire du Cancer Toulouse Oncopole, Toulouse, France On behalf of the Prostate Cancer Committee of the Association Française d'Urologie (CC-AFU)
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7
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Rogowski P, Trapp C, von Bestenbostel R, Konnerth D, Marschner S, Schmidt Hegemann NS, Belka C, Li M. Radiotherapy in oligometastatic prostate cancer-a pattern of care survey among members of the German Society for Radiation Oncology (DEGRO). Strahlenther Onkol 2022; 198:727-734. [PMID: 35364690 PMCID: PMC9300519 DOI: 10.1007/s00066-022-01925-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 03/02/2022] [Indexed: 11/30/2022]
Abstract
Purpose Due to improved imaging, oligometastatic prostate cancer (OMPC) is diagnosed more frequently. Growing evidence shows that patients with a limited number of metastases benefit from primary-directed radiotherapy (PDT) as well as from metastasis-directed radiotherapy (MDT). This survey investigates the current treatment practice for OMPC among German-speaking radiation oncologists. Methods Members of the German Society for Radiation Oncology (Deutsche Gesellschaft für Radioonkologie [DEGRO]) were surveyed regarding their current treatment practice via an anonymous online questionnaire sent by email. The survey included six general items and 14 specific items regarding treatment characteristics. Questionnaires with at least 50% of questions completed were considered for further analysis. Results A total of 204 responses were received (15% response rate), 167 were considered for further analysis. Most respondents stated to be specialized in treating prostate cancer patients and to treat 10–30 patients with OMPC per annum; 97% considered PSMA-PET/CT necessary to define oligometastatic disease. Opinions differed regarding the use of systemic therapies: 63% of the respondents aimed to defer systemic therapy using radiotherapy in OMPC, whereas 37% considered systemic therapy necessary. In the setting of synchronous OMPC, 97% recommended PDT with or without a combination of MDT and/or systemic therapy. For metachronous nodal or bone oligometastatic recurrence, 98 and 99%, respectively, would opt for MDT. The majority would combine MDT with systemic therapy in patients with metachronous oligorecurrence. Respondents recommended normofractionation, hypofractionation, and SBRT for lymph node metastases in 49, 27, and 24%, respectively. No consensus existed regarding the field size for MDT of lymph node metastases. Most respondents preferred > 5 fractions for treatment of bone metastases. Conclusion Local radiotherapy for PDT and MDT is routinely used among respondents of this survey, representing 12% of all German-speaking radiation oncologists. The timing of systemic therapy, fractionation schedules, and field sizes are handled differently and remain an area of active investigation.
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Affiliation(s)
- Paul Rogowski
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Christian Trapp
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Rieke von Bestenbostel
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Dinah Konnerth
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sebastian Marschner
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | | | - Claus Belka
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.,German Cancer Consortium (DKTK), Munich, Germany
| | - Minglun Li
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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Alongi P, Laudicella R, Lanzafame H, Farolfi A, Mapelli P, Picchio M, Burger IA, Iagaru A, Minutoli F, Evangelista L. PSMA and Choline PET for the Assessment of Response to Therapy and Survival Outcomes in Prostate Cancer Patients: A Systematic Review from the Literature. Cancers (Basel) 2022; 14:cancers14071770. [PMID: 35406542 PMCID: PMC8997431 DOI: 10.3390/cancers14071770] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 02/05/2023] Open
Abstract
Simple Summary Radiolabeled choline and PSMA PET have been largely tested in the initial staging of prostate cancer and for biochemical recurrence. Moreover, diverse data are now available about their role in the evaluation of response to local and systematic therapies, and their predictive impact on the prognosis, before and after therapy. Therefore, in the present systematic review, we aimed to describe the available data, to summarize the current evidence in these settings of disease. Abstract The aims of this systematic review were to (1) assess the utility of PSMA-PET and choline-PET in the assessment of response to systemic and local therapy, and to (2) determine the value of both tracers for the prediction of response to therapy and survival outcomes in prostate cancer. We performed a systematic literature search in PubMed/Scopus/Google Scholar/Cochrane/EMBASE databases (between January 2010 and October 2021) accordingly. The quality of the included studies was evaluated following the “Quality Assessment of Prognostic Accuracy Studies” tool (QUAPAS-2). We selected 40 articles: 23 articles discussed the use of PET imaging with [68Ga]PSMA-11 (16 articles/1123 patients) or [11C]/[18F]Choline (7 articles/356 patients) for the prediction of response to radiotherapy (RT) and survival outcomes. Seven articles (three with [68Ga]PSMA-11, three with [11C]Choline, one with [18F]Choline) assessed the role of PET imaging in the evaluation of response to docetaxel (as neoadjuvant therapy in one study, as first-line therapy in five studies, and as a palliative regimen in one study). Seven papers with radiolabeled [18F]Choline PET/CT (n = 121 patients) and three with [68Ga]PSMA-11 PET (n = 87 patients) were selected before and after enzalutamide/abiraterone acetate. Finally, [18F]Choline and [68Ga]PSMA-11 PET/CT as gatekeepers for the treatment of metastatic prostate cancer with Radium-223 were assessed in three papers. In conclusion, in patients undergoing RT, radiolabeled choline and [68Ga]PSMA-11 have an important prognostic role. In the case of systemic therapies, the role of such new-generation imaging techniques is still controversial without sufficient data, thus requiring additional in this scenario.
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Affiliation(s)
- Pierpaolo Alongi
- Nuclear Medicine Unit, A.R.N.A.S. Ospedale Civico Di Cristina Benfratelli, 90127 Palermo, Italy;
| | - Riccardo Laudicella
- Nuclear Medicine Unit, Fondazione Istituto G.Giglio, 90015 Cefalù, Italy;
- Nuclear Medicine Unit, Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, University of Messina, 98122 Messina, Italy;
- Department of Nuclear Medicine, University Hospital Zürich, University of Zurich, 8091 Zurich, Switzerland;
| | - Helena Lanzafame
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany;
| | - Andrea Farolfi
- Division of Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, University of Bologna, 40138 Bologna, Italy;
| | - Paola Mapelli
- Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, 20132 Milan, Italy; (P.M.); (M.P.)
| | - Maria Picchio
- Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, 20132 Milan, Italy; (P.M.); (M.P.)
| | - Irene A. Burger
- Department of Nuclear Medicine, University Hospital Zürich, University of Zurich, 8091 Zurich, Switzerland;
- Department of Nuclear Medicine, Kantonsspital Baden, 5404 Baden, Switzerland
| | - Andrei Iagaru
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, CA 94035, USA;
| | - Fabio Minutoli
- Nuclear Medicine Unit, Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, University of Messina, 98122 Messina, Italy;
| | - Laura Evangelista
- Nuclear Medicine Unit, Department of Medicine, University of Padua, 35128 Padova, Italy
- Correspondence: ; Tel.: +39-0498211310
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9
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Steuber T, Maurer T, Miller K. [Metachronous oligometastatic prostate cancer-the more the better or only local treatment?]. Urologe A 2021; 60:1534-1545. [PMID: 34734294 DOI: 10.1007/s00120-021-01701-7] [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] [Accepted: 10/07/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Prostate cancer metastases may occur at diagnosis (de novo) or metachronous after treatment for localized disease. OBJECTIVE To describe location, prognosis, and individual treatment concepts for metachronous oligometastatic prostate cancer. MATERIALS AND METHODS Analysis of current treatment guidelines and literature for hormone sensitive, metachronous metastatic prostate cancer. RESULTS Modern imaging modalities lead to earlier diagnosis of metachronous oligometastatic prostate cancer, which offers the opportunity to develop metastasis-directed treatment concepts. Oligometastatic recurrence may occur in locoregional lymph nodes (N1) or as distant disease (M1). N1 disease is predominantly treated by salvage lymph node dissection or radiation. Distant metastasis may be radiated in order to delay systemic treatment. The combination of androgen deprivation and novel androgen receptor-targeted drugs such as apalutamide or enzalutamide are associated with a significant survival benefit compared to castration alone in bone or visceral oligometastatic metachronous disease. CONCLUSION Metachronous oligometastatic prostate cancer is heterogeneous with slow progression compared to men with high volume metastasis. Individual treatment concepts may decrease risk of progression and, thus, delay time to medical treatment. Multimodal approaches are currently being evaluated in clinical trials.
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Affiliation(s)
- T Steuber
- Martini-Klinik, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, Gebäude Ost 46, 20246, Hamburg, Deutschland.
| | - T Maurer
- Martini-Klinik, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, Gebäude Ost 46, 20246, Hamburg, Deutschland
| | - K Miller
- Klinik für Urologie, Universitätsklinikum Charite Berlin, Berlin, Deutschland
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10
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Werensteijn-Honingh AM, Wevers AFJ, Peters M, Kroon PS, Intven M, Eppinga WSC, Jürgenliemk-Schulz IM. Progression-free survival in patients with 68Ga-PSMA-PET-directed SBRT for lymph node oligometastases. Acta Oncol 2021; 60:1342-1351. [PMID: 34323648 DOI: 10.1080/0284186x.2021.1955970] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Prostate cancer oligometastatic disease can be treated using stereotactic body radiotherapy (SBRT) in order to postpone start of systemic treatments such as androgen deprivation therapy (ADT). 68Ga-PSMA-PET/CT imaging allows for diagnosis of oligometastases at lower PSA values. We analysed a cohort of patients with prostate cancer lymph node oligometastases detected on PSMA-PET/CT. MATERIALS AND METHODS Ninety patients with metachronous oligometastatic prostate cancer received SBRT for 1-3 lymph node metastases diagnosed on 68Ga-PSMA-PET/CT. The primary end point was progression free survival (PFS), with disease progression defined as occurrence of either target lesion progression, new metastatic lesion or biochemical progression. Secondary outcomes were biochemical PFS (BPFS), ADT-free survival (ADT-FS), toxicity and quality of life (QoL). Baseline patient characteristics were tested for association with PFS and a preliminary risk score was created. RESULTS Median follow-up was 21 months (interquartile range 10-31 months). Median PFS and BPFS were 16 and 21 months, respectively. Median ADT-FS was not reached (73% (95%-CI 62-86%) at 24 months). In multivariable analysis, younger age, higher PSA prior to SBRT and extrapelvic location were associated with shorter PFS. Grade 1 fatigue was the most predominant acute toxicity (34%). Highest grade toxicity was grade 2 for acute and late events. QoL analysis showed mild, transient increase in fatigue at 1-4 weeks after SBRT. CONCLUSION A median PFS of 16 months was attained after SBRT for patients with PSMA-PET positive oligometastatic lymph nodes from prostate cancer. Higher pre-SBRT PSA, younger age and extrapelvic location were found to be predictors of shorter PFS.
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Affiliation(s)
| | - Anne F. J. Wevers
- Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Max Peters
- Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Petra S. Kroon
- Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Martijn Intven
- Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Wietse S. C. Eppinga
- Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands
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Abstract
The use of PET imaging agents in oncology, cardiovascular disease, and neurodegenerative disease shows the power of this technique in evaluating the molecular and biological characteristics of numerous diseases. These agents provide crucial information for designing therapeutic strategies for individual patients. Novel PET tracers are in continual development and many have potential use in clinical and research settings. This article discusses the potential applications of tracers in diagnostics, the biological characteristics of diseases, the ability to provide prognostic indicators, and using this information to guide treatment strategies including monitoring treatment efficacy in real time to improve outcomes and survival.
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12
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Rogowski P, Trapp C, von Bestenbostel R, Schmidt-Hegemann NS, Shi R, Ilhan H, Kretschmer A, Stief C, Ganswindt U, Belka C, Li M. Outcomes of metastasis-directed therapy of bone oligometastatic prostate cancer. Radiat Oncol 2021; 16:125. [PMID: 34193194 PMCID: PMC8247211 DOI: 10.1186/s13014-021-01849-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/24/2021] [Indexed: 12/28/2022] Open
Abstract
Background The aim of this work was to investigate the outcome of metastasis-directed radiotherapy (MDT) in prostate cancer patients with bone metastases following current ESTRO/EORTC subclassifications for oligometastatic disease. Methods Clinical data of 80 consecutive oligometastatic patients with 115 bone lesions receiving MDT between 2011 and 2019 were retrospectively evaluated. Hormone-sensitive (77.5%) and castrate-resistant (22.5%) patients were included. MDT was delivered with conventional fractionated or stereotactic body radiotherapy (SBRT) techniques. Kaplan–Meier method, log rank test, as well as Cox regression were used to calculate local control (LC) and biochemical and clinical progression-free survival (bPFS/cPFS). Results At the time of MDT 31% of patients had de-novo synchronous oligometastatic disease, 46% had de-novo metachronous oligorecurrence after primary treatment and 23% had either de-novo oligoprogressive disease, repeat oligometastatic disease or induced oligometastatic disease. The median BED3 was 93.3 Gy (range 75.8–95.3 Gy). Concomitant ADT was administered in 69% of patients. After a median follow-up of 23 months the median bPFS and cPFS were 16.5 and 21.5 months, respectively. The 2-year LC rate was 98.3%. In multivariate analysis, age ≤ 70 (HR = 2.60, 95% CI 1.20–5.62, p = 0.015) and concomitant ADT (HR = 0.26, 95% CI 0.12–0.58, p = 0.001) significantly correlated with cPFS. Category of oligometastatic disease and hormone-sensitivity were predictive for cPFS in univariate analysis. Of 45 patients with biochemical relapse, nineteen patients (42.2%) had repeat oligometastatic disease. Fourteen patients (31%) underwent a second course of MDT. No patients experienced grade ≥ 3 toxicities. Conclusions MDT is safe and offers high local control rates in bone oligometastases of prostate cancer. At 2 years after treatment, more than 2 out of 5 patients are progression-free. Trial registration Retrospectively registered.
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Affiliation(s)
- Paul Rogowski
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Christian Trapp
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Rieke von Bestenbostel
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | | | - Run Shi
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Harun Ilhan
- Department of Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
| | | | - Christian Stief
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Ute Ganswindt
- Department of Therapeutic Radiology and Oncology, Innsbruck Medical University, Anichstr. 35, 6020, Innsbruck, Austria
| | - Claus Belka
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.,German Cancer Consortium (DKTK), Munich, Germany
| | - Minglun Li
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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13
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Ahmed ME, Phillips RM, Sharma V, Davis BJ, Karnes RJ. Oligometastatic prostatic cancer recurrence: role of salvage lymph node dissection (sLND) and radiation therapy-stereotactic body radiation therapy (RT-SBRT). Curr Opin Urol 2021; 31:199-205. [PMID: 33742974 DOI: 10.1097/mou.0000000000000865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Metastases directed therapy (MDT) is an increasingly utilized modality in patients with oligometastatic prostate cancer (OMPC) recurrence. The purpose of our review is to discuss the recent literature on the safety and oncologic outcomes of this treatment approach. RECENT FINDINGS Metastases directed therapy, in particular, stereotactic body radiation therapy (SBRT) and salvage lymph node dissection (sLND), has shown promising efficacy in patients with OMPC. Many case series report favorable outcomes with MDT as compared to hormonal deprivation therapy alone or surveillance. Of the few case series investigating the use of MDT as part of a multimodality approach in castrate-resistant OMPC, more favorable outcomes in comparison to the use of systemic treatment alone are reported. SUMMARY With the recent advances in imaging techniques, particularly molecular imaging, management of OMPC has progressed rapidly in the last few years. The feasibility and benefits of MDT in OMPC have been demonstrated in prospective and retrospective series. Further prospective studies investigating the role of MDT to define optimal patient subgroups and management strategies are warranted.
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Affiliation(s)
| | - Ryan M Phillips
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Brian J Davis
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA
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14
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Jadvar H. Competitive Advantage of PSMA Theranostics in Prostate Cancer. Radiology 2021; 299:261-263. [PMID: 33788590 PMCID: PMC8103912 DOI: 10.1148/radiol.2021210348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 12/14/2022]
Affiliation(s)
- Hossein Jadvar
- From the Division of Nuclear Medicine, Department of Radiology, Keck School of Medicine, University of Southern California, 2250 Alcazar St, CSC 102, Los Angeles, CA 90033
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15
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Rogowski P, Roach M, Schmidt-Hegemann NS, Trapp C, von Bestenbostel R, Shi R, Buchner A, Stief C, Belka C, Li M. Radiotherapy of oligometastatic prostate cancer: a systematic review. Radiat Oncol 2021; 16:50. [PMID: 33750437 PMCID: PMC7941976 DOI: 10.1186/s13014-021-01776-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 02/24/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Due to improved imaging sensitivity, the term "oligometastatic" prostate cancer disease is diagnosed more often, leading to an increasing interest in metastasis-directed therapy (MDT). There are two types of radiation based MDT applied when treating oligometastatic disease: (1) stereotactic body radiation therapy (SBRT) generally used for bone metastases; or (2) SBRT for isolated nodal oligometastases combined with prophylactic elective nodal radiotherapy. This review aims to summarize current evidence data, which may shed light on the optimal management of this heterogeneous group of patients. METHODS A systematic review of the Medline database through PubMed was performed according to PRISMA guidelines. All relevant studies published up to November 2020 were identified and screened. Fifty-six titles were included. Besides outcome parameters, different prognostic and predictive factors were assessed, including site of metastases, time between primary treatment and MDT, use of systemic therapies, hormone sensitivity, as well as pattern of recurrence. FINDINGS Evidence consists largely of retrospective case series and no consistent precise definition of oligometastasis exists, however, most investigators seem to acknowledge the need to distinguish between patients presenting with what is frequently called "synchronous" versus "metachronous" oligometastatic disease. Available data on radiotherapy as MDT demonstrate high local control rates and a small but relevant proportion of patients without progressive disease after 2 years. This holds true for both hormone sensitive and castration resistant prostate cancer diseases. The use of 68Ga-PSMA PET/CT for staging increased dramatically. Radiation doses and field sizes varied considerably among the studies. The search for relevant prognostic and predictive factors is ongoing. CONCLUSIONS To our best knowledge this review on oligometastatic prostate cancer included the largest number of original articles. It demonstrates the therapeutic potential and challenges of MDT for oligometastatic prostate cancer. Prospective studies are under way and will provide further high-level evidence.
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Affiliation(s)
- Paul Rogowski
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Mack Roach
- Department of Radiation Oncology, UCSF Helen Diller Family Comprehensive Cancer Center, 1600 Divisadero Street, Suite H 1031, San Francisco, CA 94143-1708 USA
| | | | - Christian Trapp
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Rieke von Bestenbostel
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Run Shi
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Alexander Buchner
- Department of Urology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Christian Stief
- Department of Urology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Claus Belka
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
- German Cancer Consortium (DKTK), Munich, Germany
| | - Minglun Li
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany
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16
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Weber M, Hadaschik B, Ferdinandus J, Rahbar K, Bögemann M, Herrmann K, Fendler WP, Kesch C. Prostate-specific Membrane Antigen-based Imaging of Castration-resistant Prostate Cancer. Eur Urol Focus 2021; 7:279-287. [PMID: 33483289 DOI: 10.1016/j.euf.2021.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/10/2020] [Accepted: 01/06/2021] [Indexed: 12/13/2022]
Abstract
CONTEXT Positron emission tomography (PET) targeting prostate-specific membrane antigen (PSMA) has unprecedented accuracy for localization of initial or recurrent prostate cancer (PC). There is now growing evidence regarding the value of PSMA-PET in patients with advanced PC. OBJECTIVE To review the value of PSMA-PET/computed tomography (CT) in the context of castration-resistant PC (CRPC). EVIDENCE ACQUISITION A search of the PubMed database using the terms "PSMA PET castration resistant prostate cancer" (years 2011-2020) was performed. Reviews, case reports/series, non-English articles, preclinical studies, access-restricted studies, and studies on PSMA radioligand therapy without further analysis of PSMA-PET parameters were subsequently excluded. EVIDENCE SYNTHESIS Compared to conventional imaging, PSMA-PET better identifies the true extent of CRPC, especially nonmetastatic CRPC. The clinical benefit of this stage migration is still unclear and needs to be evaluated in further studies. High accuracy of PSMA-PET holds promise for better, PET-guided metastasis-directed treatment in patients with oligometastatic CRPC. PSMA-PET is an essential eligibility criterion for [177Lu]-PSMA theranostic applications. Preliminary evidence indicates the value of PSMA-PET for the assessment of treatment responses. CONCLUSIONS Among other applications, PSMA-PET offers more precise staging for nonmetastatic CRPC. In particular, target localization for metastasis-directed therapy and target expression assessment for PSMA radioligand therapy also hold promise. Potential translation of this diagnostic tool into an oncologic benefit needs to be defined in future trials. PATIENT SUMMARY This review describes how prostate-specific membrane antigen positron emission tomography (PSMA-PET), a new sensitive imaging tool for prostate cancer, might help to guide clinicians in making treatment decisions for advanced prostate cancer.
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Affiliation(s)
- Manuel Weber
- Department of Nuclear Medicine, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Essen, Germany; West German Cancer Center.
| | - Boris Hadaschik
- West German Cancer Center; Department of Urology, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Essen, Germany
| | - Justin Ferdinandus
- Department of Nuclear Medicine, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Essen, Germany; West German Cancer Center
| | - Kambiz Rahbar
- West German Cancer Center; Department of Nuclear Medicine, University Hospital Münster, Münster, Germany
| | - Martin Bögemann
- West German Cancer Center; Department of Urology, University Hospital Münster, Münster, Germany
| | - Ken Herrmann
- Department of Nuclear Medicine, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Essen, Germany; West German Cancer Center
| | - Wolfgang P Fendler
- Department of Nuclear Medicine, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Essen, Germany; West German Cancer Center
| | - Claudia Kesch
- West German Cancer Center; Department of Urology, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Essen, Germany
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