1
|
Dell'Oro M, Huff DT, Lokre O, Kendrick J, Munian Govindan R, Ong JSL, Ebert MA, Perk TG, Francis RJ. Assessing the Heterogeneity of Response of [ 68Ga] Ga-PSMA-11 PET/CT Lesions in Patients With Biochemical Recurrence of Prostate Cancer. Clin Genitourin Cancer 2024; 22:102155. [PMID: 39096564 DOI: 10.1016/j.clgc.2024.102155] [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: 03/26/2024] [Revised: 07/02/2024] [Accepted: 07/03/2024] [Indexed: 08/05/2024]
Abstract
INTRODUCTION Treatment of men with metastatic prostate cancer can be difficult due to the heterogeneity of response of lesions. [68Ga]Ga-PSMA-11 (PSMA) PET/CT assists with monitoring and directing clinical intervention; however, the impact of response heterogeneity has yet to be related to outcome measures. The aim of this study was to assess the impact of quantitative imaging information on the value of PSMA PET/CT to assess patient outcomes in response evaluation. PATIENTS AND METHODS Baseline and follow-up (6 months) PSMA PET/CT of 162 men with oligometastatic PC treated with standard clinical care were acquired between 2015 and 2016 for analysis. An augmentative software medical device was used to track lesions between scans and quantify lesion change to categorize them as either new, increasing, stable, decreasing, or disappeared. Quantitative imaging features describing the size, intensity, extent, change, and heterogeneity of change (based on percent change in SUVtotal) among lesions were extracted and evaluated for association with overall survival (OS) using Cox regression models. Model performance was evaluated using the c-index. RESULTS Forty-one (25%) of subjects demonstrated heterogeneous response at follow-up, defined as having at least 1 new or increasing lesion and at least 1 decreasing or disappeared lesion. Subjects with heterogeneous response demonstrated significantly shorter OS than subjects without (median OS = 76.6 months vs. median OS not reached, P < .05, c-index = 0.61). In univariate analyses, SUVtotal at follow-up was most strongly associated with OS (HR = 1.29 [1.19, 1.40], P < .001, c-index = 0.73). Multivariable models applied using heterogeneity of change features demonstrated higher performance (c-index = 0.79) than models without (c-index = 0.71-0.76, P < .05). CONCLUSION Augmentative software tools enhance the evaluation change on serial PSMA PET scans and can facilitate lesional evaluation between timepoints. This study demonstrates that a heterogeneous response at a lesional level may impact adversely on patient outcomes and supports further investigation to evaluate the role of imaging to guide individualized patient management to improve clinical outcomes.
Collapse
Affiliation(s)
- Mikaela Dell'Oro
- Australian Centre for Quantitative Imaging, School of Medicine, The University of Western Australia, Perth, Australia.
| | | | | | - Jake Kendrick
- School of Physics, Mathematics and Computing, The University of Western Australia, Perth, Australia; Centre for Advanced Technologies in Cancer Research, Perth, Australia
| | | | - Jeremy S L Ong
- Department of Nuclear Medicine, Fiona Stanley Hospital, Murdoch, Australia
| | - Martin A Ebert
- Australian Centre for Quantitative Imaging, School of Medicine, The University of Western Australia, Perth, Australia; School of Physics, Mathematics and Computing, The University of Western Australia, Perth, Australia; Centre for Advanced Technologies in Cancer Research, Perth, Australia; Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Australia
| | | | - Roslyn J Francis
- Australian Centre for Quantitative Imaging, School of Medicine, The University of Western Australia, Perth, Australia; Department of Nuclear Medicine, Sir Charles Gairdner Hospital, Nedlands, Australia
| |
Collapse
|
2
|
Calvo OF, Iglesias JM, Casas EAJ, Molina-Díaz A, Herranz UA, Nebra JC, García-Bernardo L, Martínez-Breijo S, Lázaro-Quintela M, Muñiz-García G, Vázquez-Estevez S. Recommendations from the Galician Oncological Society and the Galician Society of Nuclear Medicine for the use of 177Lu-PSMA-617 radioligand-therapy in prostate cancer. Clin Transl Oncol 2024:10.1007/s12094-024-03662-7. [PMID: 39266875 DOI: 10.1007/s12094-024-03662-7] [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: 05/02/2024] [Accepted: 08/07/2024] [Indexed: 09/14/2024]
Abstract
Theragnostic is a type of precision medicine that uses molecules linked to radioactive isotopes for the diagnosis and treatment of diseases. In recent years, it has gained significant importance to treat neuroendocrine tumors and is currently being used in prostate cancer. Various radiopharmaceuticals have emerged for diagnosing and detecting lesions showing prostate-specific membrane antigen (PSMA) positivity on the Positron emission tomography/computed tomography scan, being the most widely used labeled with [68Ga] and [18F]. Its use as therapy in prostate cancer (PC) has been assessed in the VISION, TheraP, and PSMAfore clinical trials conducted with the radioligand [177Lu]Lu-PSMA-617, demonstrating significant antitumor activity. The aim of this article is to present practical recommendations, based on current available scientific evidence and on a multidisciplinary consensus, for the diagnosis and treatment with [177Lu]Lu-PSMA-617 in patients with PC.
Collapse
Affiliation(s)
- Ovidio Fernández Calvo
- Department of Medical Oncology, Complexo Hospitalario Universitario de Ourense, Ourense, Spain.
| | - José Muñoz Iglesias
- Department of Nuclear Medicine (SERGAS), University Hospital of Vigo, Meixoeiro Hospital, Vigo, Spain
| | | | - Aura Molina-Díaz
- Department of Medical Oncology, Complexo Hospitalario Universitario de A Coruña, A Coruña, Spain
| | - Urbano Anido Herranz
- Department of Medical Oncology, Complexo Hospitalario Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - Javier Casas Nebra
- Uro-Oncology Unit, Complexo Hospitalario Universitario de A Coruña, A Coruña, Spain
| | - Lucía García-Bernardo
- Department of Nuclear Medicine, Complexo Hospitalario Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - Sara Martínez-Breijo
- Department of Urology, Complexo Hospitalario Universitario de A Coruña, A Coruña, Spain
| | - Martín Lázaro-Quintela
- Department of Medical Oncology, University Hospital of Vigo, Meixoeiro Hospital, Vigo, Spain
| | - Gloria Muñiz-García
- Department of Nuclear Medicine, Complexo Hospitalario Universitario de Ourense, Ourense, Spain
| | - Sergio Vázquez-Estevez
- Department of Medical Oncology, Hospital Universitario Lucus Augusti de Lugo, Lugo, Spain
| |
Collapse
|
3
|
Campbell RA, Wood A, Schwen Z, Ward R, Weight C, Purysko AS. MRI and active surveillance: thoughts from across the pond. Eur Radiol 2024:10.1007/s00330-024-10866-6. [PMID: 39266769 DOI: 10.1007/s00330-024-10866-6] [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: 02/21/2024] [Revised: 04/29/2024] [Accepted: 05/25/2024] [Indexed: 09/14/2024]
Abstract
In the United States (US), urological guidelines recommend active surveillance (AS) for patients with low-risk prostate cancer (PCa) and endorse it as an option for those with favorable intermediate-risk PCa with a > 10-year life expectancy. Multiparametric magnetic resonance imaging (mpMRI) is being increasingly used in the screening, monitoring, and staging of PCa and involves the combination of T2-weighted, diffusion-weighted, and dynamic contrast-enhanced T1-weighted imaging. The American Urological Association (AUA) guidelines provide recommendations about the use of mpMRI in the confirmatory setting for AS patients but do not discuss the timing of follow-up mpMRI in AS. The National Comprehensive Cancer Network (NCCN) discourages using it more frequently than every 12 months. Finally, guidelines state that mpMRI can be used to augment risk stratification but should not replace periodic surveillance biopsy. In this review, we discuss the current literature regarding the use of mpMRI for patients with AS, with a particular focus on the approach in the US. Although AS shows a benefit to the addition of mpMRI to diagnostic, confirmatory, and follow-up biopsy, there is no strong evidence to suggest that mpMRI can safely replace biopsy for most patients and thus it must be incorporated into a multimodal approach. CLINICAL RELEVANCE STATEMENT: According to the US guidelines, regular follow-ups are important for men with prostate cancer on active surveillance, and prostate MRI is a valuable tool that should be utilized, in combination with PSA kinetics and biopsies, for monitoring prostate cancer. KEY POINTS: According to the US guidelines, the addition of MRI improves the detection of clinically significant prostate cancer. Timing interval imaging of patients on active surveillance remains unclear and has not been specifically addressed. MRI should trigger further work-ups, but not replace periodic follow-up biopsies, in men on active surveillance.
Collapse
Affiliation(s)
- Rebecca A Campbell
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Andrew Wood
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Zeyad Schwen
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Ryan Ward
- Abdominal Imaging Section, Diagnostics Institute, Cleveland, OH, USA
| | - Christopher Weight
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Andrei S Purysko
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA.
- Abdominal Imaging Section, Diagnostics Institute, Cleveland, OH, USA.
| |
Collapse
|
4
|
Adeleke S. High-performing, Accessible, and Affordable Imaging in Metastatic Prostate Cancer: Is Whole-body Magnetic Resonance Imaging the Answer? Eur Urol 2024; 86:275-277. [PMID: 38871521 DOI: 10.1016/j.eururo.2024.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/19/2024] [Accepted: 05/28/2024] [Indexed: 06/15/2024]
Affiliation(s)
- Sola Adeleke
- School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK.
| |
Collapse
|
5
|
Zhang X, Ma Z. Head-to-head comparison of PSMA PET/CT and mpMRI for detecting biochemical recurrence of prostate cancer: A systematic review and meta-analysis. Curr Urol 2024; 18:177-184. [PMID: 39219632 PMCID: PMC11337997 DOI: 10.1097/cu9.0000000000000242] [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: 07/21/2023] [Accepted: 12/06/2023] [Indexed: 09/04/2024] Open
Abstract
Objectives This study aimed to evaluate the performance of prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA PET/CT) in comparison to multiparametric magnetic resonance imaging (mpMRI) for detecting biochemical recurrence of prostate cancer (PCa). Materials and methods We conducted a comprehensive search for articles published in PubMed, Web of Science, Embase, and the Cochrane Library, spanning the inception of the database until October 26, 2022, which included head-to-head comparisons of PSMA PET/CT and mpMRI for assessing the biochemical recurrence of PCa. Results A total of 5 studies including 228 patients were analyzed. The overall positivity rates of PSMA PET/CT and mpMRI for detecting biochemical recurrence of PCa after final treatment were 0.68 (95% confidence interval [CI], 0.52-0.89) and 0.56 (95% CI, 0.36-0.88), respectively. The positivity rates of PSMA PET/CT and mpMRI for detecting local recurrence, lymph node metastasis, and bone metastases were 0.37 (95% CI, 0.30-0.47) and 0.38 (95% CI, 0.22-0.67), 0.44 (95% CI, 0.35-0.56) and 0.25 (95% CI, 0.17-0.35), and 0.19 (95% CI, 0.11-0.31) and 0.12 (95% CI, 0.05-0.25), respectively. Compared with mpMRI, PSMA PET/CT exhibited a higher positivity rate for detecting biochemical recurrence and lymph node metastases, and no significant difference in the positivity rate of local recurrence was observed between these 2 imaging modalities. Conclusions Compared with mpMRI, PSMA PET/CT appears to have a higher positivity rate for detecting biochemical recurrence of PCa. Although both imaging methods showed similar positivity rates of detecting local recurrence, PSMA PET/CT outperformed PSMA PET/CT in detecting lymph node involvement and overall recurrence.
Collapse
Affiliation(s)
| | - Zhe Ma
- Department of Ultrasound, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| |
Collapse
|
6
|
Hameed MY, Gul M, Chaudhry A, Muzaffar H, Sheikh M, Chee W, Ayyash S, Ayyash J, Al-Hindi M, Shahare H, Chaudhry A. From Oncogenesis to Theranostics: The Transformative Role of PSMA in Prostate Cancer. Cancers (Basel) 2024; 16:3039. [PMID: 39272896 PMCID: PMC11394180 DOI: 10.3390/cancers16173039] [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: 06/25/2024] [Revised: 08/24/2024] [Accepted: 08/27/2024] [Indexed: 09/15/2024] Open
Abstract
Prostate cancer, a leading cause of cancer-related mortality among men, is characterized by complex genetic and epigenetic alterations, dysregulation of oncogenic pathways, and a dynamic tumor microenvironment. Advances in molecular diagnostics and targeted therapies have significantly transformed the management of this disease. Prostate-specific membrane antigen (PSMA) has emerged as a critical biomarker, enhancing the precision of prostate cancer diagnosis and treatment. Theranostics, which integrates PSMA-targeted imaging with radioligand therapies, has shown remarkable efficacy in detecting and treating advanced prostate cancer. By leveraging the dual capabilities of PSMA-based diagnostics and therapeutic agents, theranostics offers a personalized approach that improves patient outcomes. This comprehensive review explores the latest developments in PSMA-targeted theranostics and their impact on the future of prostate cancer management, highlighting key clinical trials and emerging therapeutic strategies.
Collapse
Affiliation(s)
- Muhammad Y Hameed
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72223, USA
| | - Maryam Gul
- Crescent Theranostics, Anaheim, CA 982902, USA
| | | | | | | | - Winson Chee
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72223, USA
| | - Sondos Ayyash
- Department of Medical Oncology, University Health Network (UHN), Toronto, ON M5G 2C1, Canada
| | - Jenna Ayyash
- Department of Biology, University of Toronto, Toronto, ON M5S 1A1, Canada
| | - Mohannad Al-Hindi
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72223, USA
| | - Humam Shahare
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72223, USA
| | | |
Collapse
|
7
|
Sheikh GT, Trapp C, Schmidt-Hegemann NS, Buchner A, Stief CG, Unterrainer M, Kunz WG, Cyran CC, Grawe F, Delker A, Zacherl MJ, Holzgreve A, Unterrainer LM, Brendel M, Belka C, Li M, Rogowski P. PSMA-PET/CT response after metastasis-directed radiotherapy of bone oligometastases in prostate cancer. EJNMMI REPORTS 2024; 8:25. [PMID: 39155339 PMCID: PMC11330950 DOI: 10.1186/s41824-024-00212-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 05/14/2024] [Indexed: 08/20/2024]
Abstract
OBJECTIVE Bone metastases are very common in advanced prostate cancer and can sensitively be detected utilizing PSMA-PET/CT. Therefore, our goal was to evaluate the suitability of PSMA-PET/CT-guided metastasis-directed external beam radiotherapy (MDT) as treatment option for patients with biochemical recurrence and oligometastatic bone lesions. MATERIALS & METHODS We retrospectively examined 32 prostate cancer patients with biochemical recurrence and PSMA-positive oligometastatic disease limited to the bone (n = 1-3). A total of 49 bone lesions were treated with MDT. All patients received a post-radiotherapy PSMA-PET/CT-Scan. Changes in SUVmax, PSMA-positive tumor volume per lesion and PSA, as well as the correlation between the PET/CT-interval and SUVmax response were calculated. RESULTS MDT lead to a SUVmax decrease in 46/49 (94%) of the lesions. The median relative decline of SUVmax was 60.4%, respectively. Based on PSMA-positive lesion volume with a SUV cut-off of 4, 46/49 (94%) of lesions showed complete response, two (4%) partial response and one lesion (2%) was stable on PSMA-PET/CT after MDT. Most of the treated patients (56.3%) showed an initial PSA decline at three months and a PSA nadir of median 0.14 ng/ml after a median time of 3.6 months after MDT. The median relative PSA change at three months after MDT was 3.9%. CONCLUSION MDT is a very effective treatment modality for prostate cancer bone oligometastases and lesion response to MDT can be assessed using the (semi-)quantitative parameters SUVmax and PSMA-positive lesion volume with established SUV cut-offs.
Collapse
Affiliation(s)
- Gabriel T Sheikh
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
| | - Christian Trapp
- Department of Radiation Oncology, LMU University Hospital, LMU Munich, Munich, Germany
| | | | - Alexander Buchner
- Department of Urology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Christian G Stief
- Department of Urology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Marcus Unterrainer
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Wolfgang G Kunz
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Freba Grawe
- German Cancer Research Center (DKFZ), Hector Cancer Institute at the University Medical Center Mannheim, Heidelberg, Germany
- Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Astrid Delker
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Mathias J Zacherl
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Adrien Holzgreve
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lena M Unterrainer
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, UCLA, Los Angeles, USA
| | - Matthias Brendel
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Claus Belka
- Department of Radiation Oncology, LMU University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Minglun Li
- Department of Radiation Oncology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Paul Rogowski
- Department of Radiation Oncology, LMU University Hospital, LMU Munich, Munich, Germany
| |
Collapse
|
8
|
Naik M, Khan SR, Lewington V, Challapalli A, Eccles A, Barwick TD. Imaging and therapy in prostate cancer using prostate specific membrane antigen radioligands. Br J Radiol 2024; 97:1391-1404. [PMID: 38733571 PMCID: PMC11256943 DOI: 10.1093/bjr/tqae092] [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: 09/12/2023] [Revised: 04/29/2024] [Accepted: 05/03/2024] [Indexed: 05/13/2024] Open
Abstract
Prostate specific membrane antigen (PSMA) directed PET imaging has rapidly transformed prostate cancer workup over the past decade and paved the way for a theranostic approach using 177Lu-labelled PSMA radioligand therapy (RLT). This review gives an overview of the underlying principles behind PSMA as a target; the current use of PSMA PET in prostate cancer imaging and benefits compared to conventional imaging; and therapeutic applications including optimisation of patient selection. It also explores the evidence base of PSMA PET for other indications not in routine clinical use and the future of PSMA-directed RLT.
Collapse
Affiliation(s)
- Mitesh Naik
- Imaging Department, Imperial College Healthcare NHS Trust, London W6 8RF, United Kingdom
| | - Sairah R Khan
- Imaging Department, Imperial College Healthcare NHS Trust, London W6 8RF, United Kingdom
| | - Valerie Lewington
- Division of Biomedical Engineering and Imaging Sciences, Kings College London, London WC2R 2LS, United Kingdom
| | - Amarnath Challapalli
- Department of Clinical Oncology, Bristol Cancer Institute, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol BS2 8ED, United Kingdom
| | - Amy Eccles
- Imaging Department, Imperial College Healthcare NHS Trust, London W6 8RF, United Kingdom
| | - Tara D Barwick
- Imaging Department, Imperial College Healthcare NHS Trust, London W6 8RF, United Kingdom
- Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London W12 0HS, United Kingdom
| |
Collapse
|
9
|
Berrens AC, Scheltema M, Maurer T, Hermann K, Hamdy FC, Knipper S, Dell'Oglio P, Mazzone E, de Barros HA, Sorger JM, van Oosterom MN, Stricker PD, van Leeuwen PJ, Rietbergen DDD, Valdes Olmos RA, Vidal-Sicart S, Carroll PR, Buckle T, van der Poel HG, van Leeuwen FWB. Delphi consensus project on prostate-specific membrane antigen (PSMA)-targeted surgery-outcomes from an international multidisciplinary panel. Eur J Nucl Med Mol Imaging 2024; 51:2893-2902. [PMID: 38012448 DOI: 10.1007/s00259-023-06524-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 11/14/2023] [Indexed: 11/29/2023]
Abstract
PURPOSE Prostate-specific membrane antigen (PSMA) is increasingly considered as a molecular target to achieve precision surgery for prostate cancer. A Delphi consensus was conducted to explore expert views in this emerging field and to identify knowledge and evidence gaps as well as unmet research needs that may help change practice and improve oncological outcomes for patients. METHODS One hundred and five statements (scored by a 9-point Likert scale) were distributed through SurveyMonkey®. Following evaluation, a consecutive second round was performed to evaluate consensus (16 statements; 89% response rate). Consensus was defined using the disagreement index, assessed by the research and development project/University of California, Los Angeles appropriateness method. RESULTS Eighty-six panel participants (72.1% clinician, 8.1% industry, 15.1% scientists, and 4.7% other) participated, most with a urological background (57.0%), followed by nuclear medicine (22.1%). Consensus was obtained on the following: (1) The diagnostic PSMA-ligand PET/CT should ideally be taken < 1 month before surgery, 1-3 months is acceptable; (2) a 16-20-h interval between injection of the tracer and surgery seems to be preferred; (3) PSMA targeting is most valuable for identification of nodal metastases; (4) gamma, fluorescence, and hybrid imaging are the preferred guidance technologies; and (5) randomized controlled clinical trials are required to define oncological value. Regarding surgical margin assessment, the view on the value of PSMA-targeted surgery was neutral or inconclusive. A high rate of "cannot answer" responses indicates further study is necessary to address knowledge gaps (e.g., Cerenkov or beta-emissions). CONCLUSIONS This Delphi consensus provides guidance for clinicians and researchers that implement or develop PSMA-targeted surgery technologies. Ultimately, however, the consensus should be backed by randomized clinical trial data before it may be implemented within the guidelines.
Collapse
Affiliation(s)
- Anne-Claire Berrens
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands.
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
| | - Matthijs Scheltema
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Department of Urology, Amsterdam University Medical Center, Location VUmc, Amsterdam, The Netherlands
| | - Tobias Maurer
- Martini-Klinik Prostate Cancer Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Urology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ken Hermann
- Department of Nuclear Medicine, University of Duisburg-Essen, German Cancer Consortium (DKTK)-University Hospital Essen, Essen, Germany
- National Center for Tumor Diseases (NCT), NCT West, Heidelberg, Germany
| | - Freddie C Hamdy
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Sophie Knipper
- Department of Urology, Vivantes Klinikum Am Urban, Berlin, Germany
| | - Paolo Dell'Oglio
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Urology, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Elio Mazzone
- Unit of Urology/Division of Oncology, Gianfranco Soldera Prostate Cancer Laboratory, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Hilda A de Barros
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | | | - Matthias N van Oosterom
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Philip D Stricker
- Department of Urology, St Vincents Hospital Sydney, Sydney, Australia
- St Vincents Prostate Cancer Research Center Sydney, Sydney, Australia
- Garvan Institute Sydney, Sydney, Australia
| | - Pim J van Leeuwen
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Daphne D D Rietbergen
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Nuclear Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Renato A Valdes Olmos
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Sergi Vidal-Sicart
- Department of Nuclear Medicine, Hospital Clínic Barcelona, Barcelona, Spain
| | - Peter R Carroll
- Department of Urology, University of California, San Francisco, CA, USA
| | - Tessa Buckle
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Henk G van der Poel
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Department of Urology, Amsterdam University Medical Center, Location VUmc, Amsterdam, The Netherlands
| | - Fijs W B van Leeuwen
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| |
Collapse
|
10
|
Cruz-Montijano M, Amo-Salas M, Cassinello-Espinosa J, García-Carbonero I, Villa-Guzman JC, Garcia-Vicente AM. Predictive and Prognostic 18F-Fluorocholine PET/CT Radiomics Nomogram in Patients with Castration-Resistant Prostate Cancer with Bone Metastases Treated with 223Ra. Cancers (Basel) 2024; 16:2695. [PMID: 39123422 PMCID: PMC11312125 DOI: 10.3390/cancers16152695] [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: 07/03/2024] [Revised: 07/25/2024] [Accepted: 07/27/2024] [Indexed: 08/12/2024] Open
Abstract
PURPOSE We aimed to develop a nomogram able to predict treatment failure, skeletal events, and overall survival (OS) in patients with castration-resistant prostate cancer with bone metastases (CRPC-BM) treated with Radium-223 dichloride (223Ra). PATIENTS AND METHODS Patients from the Castilla-La Mancha Spanish region were prospectively included in the ChoPET-Rad multicenter study from January 2015 to December 2022. Patients underwent baseline, interim, and end-of-treatment bone scintigraphy (BS) and 18F-Fluorocholine PET/CT (FCH PET/CT) scans, obtaining multiple imaging radiomics as well as clinical and biochemical variables during follow-up and studying their association with the previously defined end-points. Survival analysis was performed using the Kaplan-Meier method and Cox regression. Multivariate logistic and Cox regression models were calculated, and these models were depicted by means of nomograms. RESULTS Median progression-free survival (PFS) and OS were 4 and 14 months (mo), respectively. The variables that showed independent and significant association with therapeutic failure were baseline alkaline phosphatase (AP) levels (p = 0.022) and the characteristics of BM on the CT portion of PET/CT (p = 0.017). In the case of OS, the significant variables were therapeutic failure (p = 0.038), the number of lines received after 223Ra (p < 0.001), average SUVmax (p = 0.002), bone marrow infiltration in FCH PET/CT (p = 0.006), and interim FCH PET/CT response (p = 0.048). Final nomograms included these variables, showing good discrimination among the 100 patients included in our study. In the study of skeletal events, only OS showed a significant association in the multivariate analysis, resulting in an inconsistent nomogram design. CONCLUSIONS FCH PET/CT appears to be a good tool for evaluating patients eligible for treatment with 223Ra, as well as for their follow-up. Thus, findings derived from it, such as the morphological characteristics of BM in the CT, bone marrow infiltration, or the response to 223Ra in the interim study, have proven to be solid and useful variables in the creation of nomograms for predicting therapeutic failure and OS.
Collapse
Affiliation(s)
| | - Mariano Amo-Salas
- Mathematics Department, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain;
| | | | | | | | | |
Collapse
|
11
|
Sitharthan D, Kang S, Treacy PJ, Bird J, Alexander K, Karunaratne S, Leslie S, Chan L, Steffens D, Thanigasalam R. The Sensitivity and Specificity of Multiparametric Magnetic Resonance Imaging and Prostate-Specific Membrane Antigen Positron Emission Tomography/Computed Tomography for Predicting Seminal Vesicle Invasion in Clinically Significant Prostate Cancer: A Multicenter Retrospective Study. J Clin Med 2024; 13:4424. [PMID: 39124692 PMCID: PMC11312943 DOI: 10.3390/jcm13154424] [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: 06/09/2024] [Revised: 07/22/2024] [Accepted: 07/26/2024] [Indexed: 08/12/2024] Open
Abstract
Background/Objectives: The presence of seminal vesicle invasion (SVI) in prostate cancer (PCa) is associated with poorer postoperative outcomes. This study evaluates the predictive value of magnetic resonance imaging (MRI) and prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA PET/CT) for SVI in PCa. Methods: This cohort study included consecutive robotic prostatectomy patients for PCa at three Australian tertiary referral centres between April 2016 and September 2022. MRI and PSMA PET/CT results, clinicopathological variables, including age, BMI, prostate-specific antigen (PSA), PSA density, DRE, Biopsy Gleason score, Positive biopsy cores, PIRADS v2.1 score, MRI volume and MRI lesion size were extracted. The sensitivity, specificity, and accuracy of MRI and PSMA PET/CT for predicting SVI were compared with the histopathological results by receiver operating characteristic (ROC) analysis. Subgroup univariate and multivariate analysis was performed. Results: Of the 528 patients identified, 86 had SVI on final pathology. MRI had a low sensitivity of 0.162 (95% CI: 0.088-0.261) and a high specificity of 0.963 (95% CI: 0.940-0.979). The PSMA PET/CT had a low sensitivity of 0.439 (95% CI: 0.294-0591) and a high specificity of 0.933 (95% CI: 0.849-0.969). When MRI and PSMA PET/CT were used in combination, the sensitivity and specificity improved to 0.514 (95%CI: 0.356-0.670) and 0.880 (95% CI: 0.813-0.931). The multivariate regression showed a higher biopsy Gleason score (p = 0.033), higher PSA (p < 0.001), older age (p = 0.001), and right base lesions (p = 0.003) to be predictors of SVI. Conclusions: MRI and PSMA PET/CT independently underpredicted SVI. The sensitivity and AUC improved when they were used in combination. Multiple clinicopathological factors were associated with SVI on multivariate regression and predictive models incorporating this information may improve oncological outcomes.
Collapse
Affiliation(s)
- Darshan Sitharthan
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- RPA Institute of Academic Surgery (IAS), Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
- Department of Urology, Royal Prince Alfred Hospital (RPAH), Sydney, NSW 2050, Australia
| | - Song Kang
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW 2050, Australia
| | - Patrick-Julien Treacy
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- RPA Institute of Academic Surgery (IAS), Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
| | - Jacob Bird
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- RPA Institute of Academic Surgery (IAS), Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW 2050, Australia
| | - Kate Alexander
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- RPA Institute of Academic Surgery (IAS), Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW 2050, Australia
| | - Sascha Karunaratne
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- RPA Institute of Academic Surgery (IAS), Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW 2050, Australia
| | - Scott Leslie
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- RPA Institute of Academic Surgery (IAS), Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
- Department of Urology, Royal Prince Alfred Hospital (RPAH), Sydney, NSW 2050, Australia
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW 2050, Australia
| | - Lewis Chan
- Department of Urology, Concord Repatriation General Hospital (CRGH), Sydney, NSW 2139, Australia
| | - Daniel Steffens
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- RPA Institute of Academic Surgery (IAS), Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW 2050, Australia
| | - Ruban Thanigasalam
- Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Missenden Road, Sydney, NSW 2050, Australia
- RPA Institute of Academic Surgery (IAS), Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
- Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, NSW 2050, Australia
- Department of Urology, Concord Repatriation General Hospital (CRGH), Sydney, NSW 2139, Australia
| |
Collapse
|
12
|
Liu S, Shang W, Song J, Li Q, Wang L. Integration of photomagnetic bimodal imaging to monitor an autogenous exosome loaded platform: unveiling strong targeted retention effects for guiding the photothermal and magnetothermal therapy in a mouse prostate cancer model. J Nanobiotechnology 2024; 22:421. [PMID: 39014370 PMCID: PMC11253357 DOI: 10.1186/s12951-024-02704-0] [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: 10/11/2023] [Accepted: 07/05/2024] [Indexed: 07/18/2024] Open
Abstract
BACKGROUND Prostate cancer (PCa) is the most prevalent cancer among males, emphasizing the critical need for precise diagnosis and treatment to enhance patient prognosis. Recent studies have extensively utilized urine exosomes from patients with cancer for targeted delivery. This study aimed to employ highly sensitive magnetic particle imaging (MPI) and fluorescence molecular imaging (FMI) to monitor the targeted delivery of an exosome-loaded platform at the tumour site, offering insights into a potential combined photothermal and magnetic thermal therapy regime for PCa. RESULTS MPI and FMI were utilized to monitor the in vivo retention performance of exosomes in a prostate tumour mouse model. The exosome-loaded platform exhibited robust homologous targeting ability during imaging (SPIONs@EXO-Dye:66·48%±3·85%; Dye-SPIONs: 34·57%±7·55%, **P<0·01), as verified by in vitro imaging and in vitro tissue Prussian blue staining. CONCLUSIONS The experimental data underscore the feasibility of using MPI for in vivo PCa imaging. Furthermore, the exosome-loaded platform may contribute to the precise diagnosis and treatment of PCa.
Collapse
Affiliation(s)
- Songlu Liu
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - Wenting Shang
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, Beijing, 100190, China
| | - Jian Song
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Qiubai Li
- Department of Radiology, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Liang Wang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
| |
Collapse
|
13
|
Sutera P, Deek MP, Deek RA, Guler OC, Hurmuz P, Reyhan M, Rowe S, Radwan N, Dipasquale S, Hrinivich WT, Lowe K, Ren L, Saraiya B, Ennis R, Hathout L, Mayer T, Deweese TL, Song DY, Kiess A, Oymak E, Pienta K, Feng F, Pomper M, Ozyigit G, Tran PT, Onal C, Phillips RM. Prostate-Specific Membrane Antigen PET Response Associates with Metastasis-Free Survival After Stereotactic Ablative Radiation in Oligometastatic Prostate Cancer. Adv Radiat Oncol 2024; 9:101507. [PMID: 38799104 PMCID: PMC11127093 DOI: 10.1016/j.adro.2024.101507] [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: 11/20/2023] [Accepted: 03/28/2024] [Indexed: 05/29/2024] Open
Abstract
Purpose Emerging data suggest that metastasis-directed therapy (MDT) improves outcomes in patients with oligometastatic castration-sensitive prostate cancer (omCSPC). Prostate-specific membrane antigen positron emission tomography (PSMA-PET) can detect occult metastatic disease, and PSMA response has been proposed as a biomarker for treatment response. Herein, we identify and validate a PSMA-PET biomarker for metastasis-free survival (MFS) following MDT in omCSPC. Methods and Materials We performed an international multi-institutional retrospective study of patients with omCSPC, defined as ≤3 lesions, treated with metastasis-directed stereotactic ablative radiation who underwent PSMA-PET/computed tomography (CT) before and after (median, 6.2 months; range, 2.4-10.9 months) treatment. Pre- and post-MDT PSMA-PET/CT maximum standardized uptake value (SUVmax) was measured for all lesions, and PSMA response was defined as the percent change in SUVmax of the least responsive lesion. PSMA response was both evaluated as a continuous variable and dichotomized into PSMA responders, with a complete/partial response (at least a 30% reduction in SUVmax), and PSMA nonresponders, with stable/progressive disease (less than a 30% reduction in SUVmax). PSMA response was correlated with conventional imaging-defined metastasis-free survival (MFS) via Kaplan-Meier and Cox regression analysis. Results A total of 131 patients with 261 treated metastases were included in the analysis, with a median follow-up of 29 months (IQR, 18.5-41.3 months). After stereotactic ablative radiation, 70.2% of patients were classified as PSMA responders. Multivariable analysis demonstrated that PSMA response as a continuous variable was associated with a significantly worse MFS (hazard ratio = 1.003; 95% CI, 1.001-1.006; P = .016). Patients classified as PSMA responders were found to have a significantly improved median MFS of 39.9 versus 12 months (P = .001) compared with PSMA nonresponders. Our study is limited as it is a retrospective review of a heterogenous population. Conclusions After stereotactic ablative radiation, PSMA-PET response appears to be a radiographic biomarker that correlates with MFS in omCSPC. This approach holds promise for guiding clinical management of omCSPC and should be validated in a prospective setting.
Collapse
Affiliation(s)
- Philip Sutera
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Matthew P. Deek
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey
| | - Rebecca A. Deek
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ozan Cem Guler
- Department of Radiation Oncology, Faculty of Medicine, Baskent University, Adana Dr Turgut Noyan Research and Treatment Center, Adana, Turkey
| | - Pervin Hurmuz
- Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Mehmet Reyhan
- Department of Nuclear Medicine, Faculty of Medicine, Baskent University, Adana Dr Turgut Noyan Research and Treatment Center, Adana, Turkey
| | - Steven Rowe
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Noura Radwan
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Shirl Dipasquale
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - William T. Hrinivich
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Kathryn Lowe
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Lei Ren
- Department of Radiation Oncology, University of Maryland, Baltimore, Maryland
| | - Biren Saraiya
- Division of Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
| | - Ronald Ennis
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey
| | - Lara Hathout
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey
| | - Tina Mayer
- Division of Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
| | - Theodore L. Deweese
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Johns Hopkins University School of Medicine, Baltimore, Maryland
- James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Daniel Y. Song
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Johns Hopkins University School of Medicine, Baltimore, Maryland
- James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ana Kiess
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ezgi Oymak
- Division of Radiation Oncology, Iskenderun Gelisim Hospital, Hatay, Turkey
| | - Kenneth Pienta
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Johns Hopkins University School of Medicine, Baltimore, Maryland
- James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Felix Feng
- Department of Radiation Oncology, University of California San Francisco, San Francisco, California
| | - Martin Pomper
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Johns Hopkins University School of Medicine, Baltimore, Maryland
- James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Gokhan Ozyigit
- Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Phuoc T. Tran
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Radiation Oncology, University of Maryland, Baltimore, Maryland
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Johns Hopkins University School of Medicine, Baltimore, Maryland
- James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Cem Onal
- Department of Radiation Oncology, Faculty of Medicine, Baskent University, Adana Dr Turgut Noyan Research and Treatment Center, Adana, Turkey
- Department of Radiation Oncology, Faculty of Medicine, Baskent University, Ankara, Turkey
| | - Ryan M. Phillips
- Department of Radiation Oncology, The Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
14
|
Ndlovu H, Mokoala KMG, Lawal I, Emmett L, Sathekge MM. Prostate-specific Membrane Antigen: Alpha-labeled Radiopharmaceuticals. PET Clin 2024; 19:371-388. [PMID: 38658230 DOI: 10.1016/j.cpet.2024.03.003] [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] [Indexed: 04/26/2024]
Abstract
Novel prostate-specific membrane antigen (PSMA) ligands labeled with α-emitting radionuclides are sparking a growing interest in prostate cancer treatment. These targeted alpha therapies (TATs) have attractive physical properties that deem them effective in progressive metastatic castrate-resistant prostate cancer (mCRPC). Among the PSMA TAT radiopharmaceuticals, [225Ac]Ac-PSMA has been used extensively on a compassionate basis and is currently undergoing phase I trials. Notably, TAT has the potential to improve quality of life and has favorable antitumor activity and outcomes in multiple scenarios other than in mCRPC. In addition, resistance mechanisms to TAT may be amenable to combination therapies.
Collapse
Affiliation(s)
- Honest Ndlovu
- Nuclear Medicine Research Infrastructure (NuMeRI), Steve Biko Academic Hospital, Pretoria, South Africa; Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Pretoria, South Africa
| | - Kgomotso M G Mokoala
- Nuclear Medicine Research Infrastructure (NuMeRI), Steve Biko Academic Hospital, Pretoria, South Africa; Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Pretoria, South Africa
| | - Ismaheel Lawal
- Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Pretoria, South Africa; Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Louise Emmett
- Theranostics and Nuclear Medicine, St Vincent's Hospital Sydney, Australia
| | - Mike M Sathekge
- Nuclear Medicine Research Infrastructure (NuMeRI), Steve Biko Academic Hospital, Pretoria, South Africa; Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Pretoria, South Africa.
| |
Collapse
|
15
|
Song H, Leonio MI, Ferri V, Duan H, Aparici CM, Davidzon G, Franc BL, Moradi F, Shah J, Bergstrom CP, Fan AC, Shah S, Khaki AR, Srinivas S, Iagaru A. Same-day post-therapy imaging with a new generation whole-body digital SPECT/CT in assessing treatment response to [ 177Lu]Lu-PSMA-617 in metastatic castration-resistant prostate cancer. Eur J Nucl Med Mol Imaging 2024; 51:2784-2793. [PMID: 38635050 DOI: 10.1007/s00259-024-06718-6] [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: 01/21/2024] [Accepted: 04/15/2024] [Indexed: 04/19/2024]
Abstract
PURPOSE Lutetium-177 [177Lu]Lu-PSMA-617 radioligand therapy (RLT) represents a significant advancement for metastatic castration-resistant prostate cancer (mCRPC), demonstrating improvements in radiographic progression free survival (rPFS) and overall survival (OS) with a low rate of associated side effects. Currently, most post-therapy SPECT/CT is conducted at 24 h after infusion. This study examines the clinical utility of a next-generation multi-detector Cadmium-Zinc-Telluride (CZT) SPECT/CT system (StarGuide) in same-day post-infusion assessment and early treatment response to [177Lu]Lu-PSMA-617. METHODS In this retrospective study, 68 men with progressive mCRPC treated with [177Lu]Lu-PSMA-617 at our center from June 2022 to June 2023 were evaluated. Digital whole-body SPECT/CT imaging was performed after [177Lu]Lu-PSMA-617infusion (mean ± SD: 1.8 ± 0.6 h, range 1.1-4.9 h). Quantitative analysis of [177Lu]Lu-PSMA-617 positive lesions was performed in patients who underwent at least 2 post-therapy SPECT/CT, using liver parenchyma uptake as reference. Metrics including [177Lu]Lu-PSMA-617 positive total tumor volume (Lu-TTV), SUVmax and SUVmean were calculated. These quantitative metrics on post-infusion SPECT/CT images after cycles 1, 2 and 3 were correlated with overall survival (OS), prostate specific antigen-progression free survival (PSA-PFS) as defined by prostate cancer working group 3 (PCWG3), and PSA decrease over 50% (PSA50) response rates. RESULTS 56 patients (means age 76.2 ± 8.1 years, range: 60-93) who underwent at least 2 post-therapy SPECT/CT were included in the image analysis. The whole-body SPECT/CT scans (~ 12 min per scan) were well tolerated, with 221 same-day scans performed (89%). At a median of 10-months follow-up, 33 (58.9%) patients achieved PSA50 after [177Lu]Lu-PSMA-617 treatment and median PSA-PFS was 5.0 months (range: 1.0-15 months) while median OS was not reached. Quantitative analysis of SPECT/CT images showed that 37 patients (66%) had > 30% reduction in Lu-TTV, associated with significantly improved overall survival (median not reached vs. 6 months, P = 0.008) and PSA-PFS (median 6 months vs. 1 months, P < 0.001). However, changes in SUVmax or SUVmean did not correlate with PSA-PFS or OS. CONCLUSION We successfully implemented same-day post-therapy SPECT/CT after [177Lu]Lu-PSMA-617 infusions. Quantitation of 1-2 h post-therapy SPECT/CT images is a promising method for assessing treatment response. However, the approach is currently limited by its suboptimal detection of small tumor lesions and the necessity of incorporating a third-cycle SPECT/CT to mitigate the effects of any potential treatment-related flare-up. Further investigation in a larger patient cohort and prospective validation is essential to confirm these findings and to explore the role of SPECT/CT as a potential adjunct to PSMA PET/CT in managing mCRPC.
Collapse
Affiliation(s)
- Hong Song
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Maria Isabel Leonio
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Valentina Ferri
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Heying Duan
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Carina Mari Aparici
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Guido Davidzon
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Benjamin L Franc
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Farshad Moradi
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Jagruti Shah
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Colin P Bergstrom
- Department of Medicine, Division of Oncology, Stanford University, Stanford, CA, 94305, USA
| | - Alice C Fan
- Department of Medicine, Division of Oncology, Stanford University, Stanford, CA, 94305, USA
| | - Sumit Shah
- Department of Medicine, Division of Oncology, Stanford University, Stanford, CA, 94305, USA
| | - Ali Raza Khaki
- Department of Medicine, Division of Oncology, Stanford University, Stanford, CA, 94305, USA
| | - Sandy Srinivas
- Department of Medicine, Division of Oncology, Stanford University, Stanford, CA, 94305, USA
| | - Andrei Iagaru
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA.
| |
Collapse
|
16
|
Swiha M, Gafita A, Nguyen A, Emmett L. Treatment Response Imaging in Prostate Cancer. PET Clin 2024; 19:417-430. [PMID: 38670877 DOI: 10.1016/j.cpet.2024.03.009] [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] [Indexed: 04/28/2024]
Abstract
Objective criteria for measuring treatment response in prostate cancer are critical to clinical research and practice. The Prostate Cancer Working Group 3 criteria are widely accepted relying only on conventional imaging for radiographic treatment response. Prostate-specific membrane antigen PET/computed tomography was proven to be superior to conventional imaging in initial diagnosis and biochemical recurrence of prostate cancer. Moreover, there is growing evidence of its role in treatment response assessment in prostate cancer. This study will review the different criteria for imaging treatment response on conventional and advanced molecular imaging for different therapies, and the future perspective in posttherapy imaging.
Collapse
Affiliation(s)
- Mina Swiha
- Department of Theranostics and Nuclear Medicine, St Vincent's Hospital, Sydney, Australia; Nuclear Medicine Division, Department of Medical Imaging, University of Western Ontario, London, Canada.
| | - Andrei Gafita
- Nuclear Medicine and Molecular Imaging Division, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medicine, Baltimore, USA
| | - Andrew Nguyen
- Department of Theranostics and Nuclear Medicine, St Vincent's Hospital, Sydney, Australia; St Vincent's Clinical School, University of New South Wales, 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; Garvan Institute of Medical Research, Sydney, Australia
| |
Collapse
|
17
|
Al-Ibraheem A, Abdlkadir AS, Sweedat DA, Maus S, Al-Rasheed U, Salah S, Khriesh F, Juaidi D, Abu Dayek D, Istatieh F, Anwar F, Asrawi A, Abufara A, Al-Rwashdeh M, Abu-Hijlih R, Sharaf B, Ghanem R, Abdel-Razeq H, Mansour A. From Despair to Hope: First Arabic Experience of 177Lu-PSMA and 161Tb-PSMA Therapy for Metastatic Castration-Resistant Prostate Cancer. Cancers (Basel) 2024; 16:1974. [PMID: 38893095 PMCID: PMC11171070 DOI: 10.3390/cancers16111974] [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: 04/23/2024] [Revised: 05/18/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
The objective of this retrospective study is to assess the effectiveness and safety of two beta-emitting prostate-specific membrane antigen (PSMA) radioligands, [177Lu]Lu and [161Tb]Tb, in heavily treated patients with metastatic castration-resistant prostate cancer (mCRPC). A total of 148 cycles of beta-emitting PSMA radioligand therapy were given to 53 patients at a specialized cancer care center in Amman, Jordan. This treatment was offered following the exhaustion of all prior treatment modalities. Approximately half of the cases (n = 26) demonstrated an initial partial response to PSMA radioligand therapy. Moreover, roughly one-fourth of the patients (n = 13) exhibited a sustained satisfactory biochemical response, which qualified them to receive a total of six PSMA radioligand therapy cycles and maintain continued follow-up for additional treatment cycles. This was reflected by an adequate prostate-specific antigen (PSA) decline and a concomitant partial response evident on [68Ga]Ga-PSMA positron emission tomography/computed tomography imaging. A minority of patients (n= 18; 34%) experienced side effects. Generally, these were low-grade and self-limiting toxicities. This study endorses previous research evidence about PSMA radioligand therapy's safety and efficacy. It also provides the first clinical insight from patients of Arab ethnicity. This should facilitate and promote further evidence, both regionally and internationally.
Collapse
Affiliation(s)
- Akram Al-Ibraheem
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Al-Jubeiha, Amman 11941, Jordan; (A.S.A.); (D.A.S.); (U.A.-R.); (D.J.); (D.A.D.); (F.I.)
- School of Medicine, University of Jordan, Al-Jubeiha, Amman 11942, Jordan
| | - Ahmed Saad Abdlkadir
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Al-Jubeiha, Amman 11941, Jordan; (A.S.A.); (D.A.S.); (U.A.-R.); (D.J.); (D.A.D.); (F.I.)
| | - Deya’ Aldeen Sweedat
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Al-Jubeiha, Amman 11941, Jordan; (A.S.A.); (D.A.S.); (U.A.-R.); (D.J.); (D.A.D.); (F.I.)
| | - Stephan Maus
- Department of Nuclear Medicine, Saarland University Medical Center, D-66421 Homburg, Germany;
| | - Ula Al-Rasheed
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Al-Jubeiha, Amman 11941, Jordan; (A.S.A.); (D.A.S.); (U.A.-R.); (D.J.); (D.A.D.); (F.I.)
| | - Samer Salah
- Department of Medicine, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (S.S.); (A.A.); (M.A.-R.); (B.S.); (H.A.-R.)
| | - Fadi Khriesh
- Department of Nuclear Medicine, Klinikum Fulda, Pacelliallee 4, 36039 Fulda, Germany;
| | - Diyaa Juaidi
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Al-Jubeiha, Amman 11941, Jordan; (A.S.A.); (D.A.S.); (U.A.-R.); (D.J.); (D.A.D.); (F.I.)
| | - Dina Abu Dayek
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Al-Jubeiha, Amman 11941, Jordan; (A.S.A.); (D.A.S.); (U.A.-R.); (D.J.); (D.A.D.); (F.I.)
| | - Feras Istatieh
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Al-Jubeiha, Amman 11941, Jordan; (A.S.A.); (D.A.S.); (U.A.-R.); (D.J.); (D.A.D.); (F.I.)
| | - Farah Anwar
- Department of Nuclear Medicine, Warith International Cancer Institute, Karbala 56001, Iraq;
| | - Aisha Asrawi
- Department of Nursing, King Hussein Cancer Center (KHCC), Amman 11941, Jordan;
| | - Alaa Abufara
- Department of Medicine, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (S.S.); (A.A.); (M.A.-R.); (B.S.); (H.A.-R.)
| | - Mohammad Al-Rwashdeh
- Department of Medicine, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (S.S.); (A.A.); (M.A.-R.); (B.S.); (H.A.-R.)
| | - Ramiz Abu-Hijlih
- Department of Radiation Oncology, King Hussein Cancer Center (KHCC), Amman 11941, Jordan;
| | - Baha’ Sharaf
- Department of Medicine, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (S.S.); (A.A.); (M.A.-R.); (B.S.); (H.A.-R.)
| | - Rami Ghanem
- Department of Surgery, King Hussein Cancer Center (KHCC), Amman 11941, Jordan;
| | - Hikmat Abdel-Razeq
- Department of Medicine, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (S.S.); (A.A.); (M.A.-R.); (B.S.); (H.A.-R.)
| | - Asem Mansour
- Department of Diagnostic Radiology, King Hussein Cancer Center (KHCC), Amman 11941, Jordan;
| |
Collapse
|
18
|
Ma KC, Mena E, Lindenberg L, Lay NS, Eclarinal P, Citrin DE, Pinto PA, Wood BJ, Dahut WL, Gulley JL, Madan RA, Choyke PL, Turkbey IB, Harmon SA. Deep learning-based whole-body PSMA PET/CT attenuation correction utilizing Pix-2-Pix GAN. Oncotarget 2024; 15:288-300. [PMID: 38712741 DOI: 10.18632/oncotarget.28583] [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] [Indexed: 05/08/2024] Open
Abstract
PURPOSE Sequential PET/CT studies oncology patients can undergo during their treatment follow-up course is limited by radiation dosage. We propose an artificial intelligence (AI) tool to produce attenuation-corrected PET (AC-PET) images from non-attenuation-corrected PET (NAC-PET) images to reduce need for low-dose CT scans. METHODS A deep learning algorithm based on 2D Pix-2-Pix generative adversarial network (GAN) architecture was developed from paired AC-PET and NAC-PET images. 18F-DCFPyL PSMA PET-CT studies from 302 prostate cancer patients, split into training, validation, and testing cohorts (n = 183, 60, 59, respectively). Models were trained with two normalization strategies: Standard Uptake Value (SUV)-based and SUV-Nyul-based. Scan-level performance was evaluated by normalized mean square error (NMSE), mean absolute error (MAE), structural similarity index (SSIM), and peak signal-to-noise ratio (PSNR). Lesion-level analysis was performed in regions-of-interest prospectively from nuclear medicine physicians. SUV metrics were evaluated using intraclass correlation coefficient (ICC), repeatability coefficient (RC), and linear mixed-effects modeling. RESULTS Median NMSE, MAE, SSIM, and PSNR were 13.26%, 3.59%, 0.891, and 26.82, respectively, in the independent test cohort. ICC for SUVmax and SUVmean were 0.88 and 0.89, which indicated a high correlation between original and AI-generated quantitative imaging markers. Lesion location, density (Hounsfield units), and lesion uptake were all shown to impact relative error in generated SUV metrics (all p < 0.05). CONCLUSION The Pix-2-Pix GAN model for generating AC-PET demonstrates SUV metrics that highly correlate with original images. AI-generated PET images show clinical potential for reducing the need for CT scans for attenuation correction while preserving quantitative markers and image quality.
Collapse
Affiliation(s)
- Kevin C Ma
- Artificial Intelligence Resource, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Esther Mena
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Liza Lindenberg
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Nathan S Lay
- Artificial Intelligence Resource, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Phillip Eclarinal
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Deborah E Citrin
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Peter A Pinto
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Bradford J Wood
- Center for Interventional Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - William L Dahut
- Genitourinary Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - James L Gulley
- Center for Immuno-Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ravi A Madan
- Genitourinary Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Peter L Choyke
- Artificial Intelligence Resource, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ismail Baris Turkbey
- Artificial Intelligence Resource, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Stephanie A Harmon
- Artificial Intelligence Resource, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| |
Collapse
|
19
|
An C, Qiu X, Liu B, Song X, Yang Y, Shu J, Fu Y, Wang F, Zhao X, Guo H. A PSMA PET/CT-based risk model for prediction of concordance between targeted biopsy and combined biopsy in detecting prostate cancer. World J Urol 2024; 42:285. [PMID: 38695883 DOI: 10.1007/s00345-024-04947-w] [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: 01/10/2024] [Accepted: 03/20/2024] [Indexed: 05/22/2024] Open
Abstract
PURPOSE This study is to investigate the diagnostic value of 68Ga-PSMA-11 in improving the concordance between mpMRI-TB and combined biopsy (CB) in detecting PCa. METHODS 115 consecutive men with 68Ga-PSMA-11 PET/CT prior to prostate biopsy were included for analysis. PSMA intensity, quantified as maximum standard uptake value (SUVmax), minimum apparent diffusion coefficient (ADCmin) and other clinical characteristics were evaluated relative to biopsy concordance using univariate and multivariate logistic regression analyses. A prediction model was developed based on the identified parameters, and a dynamic online diagnostic nomogram was constructed, with its discrimination evaluated through the area under the ROC curve (AUC) and consistency assessed using calibration plots. To assess its clinical applicability, a decision curve analysis (DCA) was performed, while internal validation was conducted using bootstrapping methods. RESULTS Concordance between mpMRI-TB and CB occurred in 76.5% (88/115) of the patients. Multivariate logistic regression analyses performed that SUVmax (OR= 0.952; 95% CI 0.917-0.988; P= 0.010) and ADCmin (OR= 1.006; 95% CI 1.003-1.010; P= 0.001) were independent risk factors for biopsy concordance. The developed model showed a sensitivity, specificity, accuracy and AUC of 0.67, 0.78, 0.81 and 0.78 in the full sample. The calibration curve demonstrated that the nomogram's predicted outcomes closely resembled the ideal curve, indicating consistency between predicted and actual outcomes. Furthermore, the decision curve analysis (DCA) highlighted the clinical net benefit achievable across various risk thresholds. These findings were reinforced by internal validation. CONCLUSIONS The developed prediction model based on SUVmax and ADCmin showed practical value in guiding the optimization of prostate biopsy pattern. Lower SUVmax and Higher ADCmin values are associated with greater confidence in implementing mono-TB and safely avoiding SB, effectively balancing benefits and risks.
Collapse
Affiliation(s)
- Chaoli An
- Department of Urology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
- Department of Andrology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Xuefeng Qiu
- Department of Urology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Beibei Liu
- Department of Urology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Xiang Song
- Department of Urology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, 210008, China
| | - Yu Yang
- Department of Urology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, 210008, China
| | - Jiaxin Shu
- Department of Urology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, 210008, China
| | - Yao Fu
- Department of Pathology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Feng Wang
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210003, China.
| | - Xiaozhi Zhao
- Department of Andrology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China.
| | - Hongqian Guo
- Department of Urology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China.
| |
Collapse
|
20
|
Eisazadeh R, Mirshahvalad SA, Schwieghofer-Zwink G, Hehenwarter L, Rendl G, Gampenrieder S, Greil R, Pirich C, Beheshti M. Pre-treatment 68 Ga-PSMA-11 PET/CT Prognostic Value in Predicting Response to 177Lu-PSMA-I&T Therapy and Patient Survival. Mol Imaging Biol 2024; 26:360-369. [PMID: 38360991 DOI: 10.1007/s11307-024-01900-6] [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: 11/09/2023] [Revised: 01/15/2024] [Accepted: 02/06/2024] [Indexed: 02/17/2024]
Abstract
PURPOSE To assess the prognostic value of pre-treatment [68Ga]Ga-PSMA-11 PET/CT and other baseline clinical characteristics in predicting prostate cancer (PCa) patients response to [177Lu]Lu-PSMA (PSMA-I&T), as well as patient survival. PROCEDURES In this retrospective study, 81 patients who received [177Lu]Lu-PSMA-I&T between October 2018 and January 2023 were reviewed. Eligible patients had metastatic castration-resistant PCa, underwent pre-treatment [68Ga]Ga-PSMA-11 PET/CT, and had serum prostate-specific antigen (PSA) levels available. On PET/CT images, SUVmax, SULmax, SUVpeak, and SULpeak of the most-avid tumoral lesion, as well as SUVmean of the parotid gland (P-SUVmean) and liver (L-SUVmean), were measured. Also, whole-body PSMA tumour volume (PSMA-TV) and total lesion PSMA (TL-PSMA) were calculated. To interpret treatment response after [177Lu]Lu-PSMA-I&T, a composite of PSA values and [68Ga]Ga-PSMA-11 PET/CT findings were considered. The outcomes were dichotomised into progressive versus controlled (stable disease or partial response) disease. Then, the association of baseline parameters with patient response was evaluated. Also, survival analyses were performed to assess baseline parameters in predicting overall survival. RESULTS Sixty patients (age:73 ± 8, PSA:185 ± 371) were included. Patients received at least one cycle of [177Lu]Lu-PSMA therapy (median = 4). Overall, half of the patients showed disease progression. In the progressive versus controlled disease evaluation, the highest SULmax, as well as SUVmax and SULmax to both backgrounds (L-SUVmean and P-SUVmean), were significantly correlated with the outcome (p-values < 0.05). In the multivariate analysis, only SULmax to the L-SUVmean remained significant (p-value = 0.038). The best cut-off was 8 (AUC = 0.71). With a median follow-up of 360 days, 11 mortal events were documented. In the multivariate survival analysis, only SULmax to P-SUVmean (cut-off = 2.4; p-value = 0.043) retained significance (hazard ratio = 4.0). CONCLUSIONS A greater level of PSMA uptake, specifically higher tumour-to-background uptake in the hottest lesion, may hold substantial prognostic significance, considering both [177Lu]Lu-PSMA-I&T response and patient survival. These ratios may have the potential to be used for PCa patient selection for radioligand therapy.
Collapse
Affiliation(s)
- Roya Eisazadeh
- Division of Molecular Imaging and Theranostics, Department of Nuclear Medicine, University Hospital, Paracelsus Medical University Salzburg, Muellner Hauptstrasse 48, 5020, Salzburg, Austria
| | - Seyed Ali Mirshahvalad
- Division of Molecular Imaging and Theranostics, Department of Nuclear Medicine, University Hospital, Paracelsus Medical University Salzburg, Muellner Hauptstrasse 48, 5020, Salzburg, Austria
- Joint Department of Medical Imaging, University Medical Imaging Toronto (UMIT), University Health Network, Mount Sinai Hospital & Women's College Hospital; University of Toronto, Toronto, ON, Canada
| | - Gregor Schwieghofer-Zwink
- Division of Molecular Imaging and Theranostics, Department of Nuclear Medicine, University Hospital, Paracelsus Medical University Salzburg, Muellner Hauptstrasse 48, 5020, Salzburg, Austria
| | - Lukas Hehenwarter
- Division of Molecular Imaging and Theranostics, Department of Nuclear Medicine, University Hospital, Paracelsus Medical University Salzburg, Muellner Hauptstrasse 48, 5020, Salzburg, Austria
| | - Gundula Rendl
- Division of Molecular Imaging and Theranostics, Department of Nuclear Medicine, University Hospital, Paracelsus Medical University Salzburg, Muellner Hauptstrasse 48, 5020, Salzburg, Austria
| | - Simon Gampenrieder
- Department of Internal Medicine III With Haematology, Medical Oncology, and Oncologic Center, University Hospital, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Richard Greil
- Department of Internal Medicine III With Haematology, Medical Oncology, and Oncologic Center, University Hospital, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Christian Pirich
- Division of Molecular Imaging and Theranostics, Department of Nuclear Medicine, University Hospital, Paracelsus Medical University Salzburg, Muellner Hauptstrasse 48, 5020, Salzburg, Austria
| | - Mohsen Beheshti
- Division of Molecular Imaging and Theranostics, Department of Nuclear Medicine, University Hospital, Paracelsus Medical University Salzburg, Muellner Hauptstrasse 48, 5020, Salzburg, Austria.
| |
Collapse
|
21
|
Belge Bilgin G, Bilgin C, Burkett BJ, Orme JJ, Childs DS, Thorpe MP, Halfdanarson TR, Johnson GB, Kendi AT, Sartor O. Theranostics and artificial intelligence: new frontiers in personalized medicine. Theranostics 2024; 14:2367-2378. [PMID: 38646652 PMCID: PMC11024845 DOI: 10.7150/thno.94788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/17/2024] [Indexed: 04/23/2024] Open
Abstract
The field of theranostics is rapidly advancing, driven by the goals of enhancing patient care. Recent breakthroughs in artificial intelligence (AI) and its innovative theranostic applications have marked a critical step forward in nuclear medicine, leading to a significant paradigm shift in precision oncology. For instance, AI-assisted tumor characterization, including automated image interpretation, tumor segmentation, feature identification, and prediction of high-risk lesions, improves diagnostic processes, offering a precise and detailed evaluation. With a comprehensive assessment tailored to an individual's unique clinical profile, AI algorithms promise to enhance patient risk classification, thereby benefiting the alignment of patient needs with the most appropriate treatment plans. By uncovering potential factors unseeable to the human eye, such as intrinsic variations in tumor radiosensitivity or molecular profile, AI software has the potential to revolutionize the prediction of response heterogeneity. For accurate and efficient dosimetry calculations, AI technology offers significant advantages by providing customized phantoms and streamlining complex mathematical algorithms, making personalized dosimetry feasible and accessible in busy clinical settings. AI tools have the potential to be leveraged to predict and mitigate treatment-related adverse events, allowing early interventions. Additionally, generative AI can be utilized to find new targets for developing novel radiopharmaceuticals and facilitate drug discovery. However, while there is immense potential and notable interest in the role of AI in theranostics, these technologies do not lack limitations and challenges. There remains still much to be explored and understood. In this study, we investigate the current applications of AI in theranostics and seek to broaden the horizons for future research and innovation.
Collapse
Affiliation(s)
| | - Cem Bilgin
- Department of Radiology, Mayo Clinic Rochester, MN, USA
| | | | - Jacob J. Orme
- Department of Oncology, Mayo Clinic Rochester, MN, USA
| | | | | | | | - Geoffrey B Johnson
- Department of Radiology, Mayo Clinic Rochester, MN, USA
- Department of Immunology, Mayo Clinic Rochester, MN, USA
| | | | - Oliver Sartor
- Department of Radiology, Mayo Clinic Rochester, MN, USA
- Department of Oncology, Mayo Clinic Rochester, MN, USA
- Department of Urology, Mayo Clinic Rochester, MN, USA
| |
Collapse
|
22
|
Burgard C, Hein C, Blickle A, Bartholomä M, Maus S, Petto S, Schaefer-Schuler A, Ezziddin S, Rosar F. Change in total lesion PSMA (TLP) during [ 177Lu]Lu-PSMA-617 radioligand therapy predicts overall survival in patients with mCRPC: monocentric evaluation of a prospective registry. Eur J Nucl Med Mol Imaging 2024; 51:885-895. [PMID: 37889298 PMCID: PMC10796576 DOI: 10.1007/s00259-023-06476-x] [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: 08/14/2023] [Accepted: 10/15/2023] [Indexed: 10/28/2023]
Abstract
PURPOSE This study investigates imaging response of [177Lu]Lu-PSMA-617 radioligand therapy (RLT) based on the whole-body parameter total lesion PSMA (TLP), derived by PSMA-PET/CT and reflecting the total tumor burden, in patients with metastatic castration-resistant prostate cancer (mCRPC) enrolled in a prospective registry (NCT04833517). METHODS A total of n = 102 mCRPC patients received a [68Ga]Ga-PSMA-11 PET/CT at baseline and after two cycles of PSMA-RLT, in which TLP was measured by using a semi-automated tumor segmentation. TLP was defined as the summed products of volume and uptake (∑ Volume × SUVmean) of all tumor lesions. The Kaplan-Meier method was used to determine the most appropriate ∆TLP thresholds for classification into partial remission (PR), stable disease (SD), and progressive disease (PD) regarding overall survival (OS). Furthermore, we analyzed criteria that are also frequently used in established response frameworks, such as the occurrence of new metastases as independent criterion (I) or in combination with change in tumor burden (II), and the change in PSA serum value (III). RESULTS For the ∆TLP thresholds -30%/+30% (and also for higher thresholds, -40%/+40% or -50%/+50%), significant differences between all three response categories became apparent (PR/PD: p = 0.001; PR/SD: p = 0.001; SD/PD: p = 0.018). Including the development of new metastases as independent criterion of PD, there was no significant difference in OS between SD and PD (p = 0.455), neither when applied in combination with TLP (p = 0.191). Similarly, significant differentiation between SD and PD was not achieved by PSA serum value (p = 0.973). CONCLUSION In the largest monocentric study to date, TLP is shown to be a qualified prognostic biomarker, applying ∆TLP thresholds of -30%/+30%. It significantly differentiated between PR, SD, and PD, whereas other response criteria did not differentiate SD vs. PD. Using TLP, the development of new metastases is not a required information for predicting OS.
Collapse
Affiliation(s)
- Caroline Burgard
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany.
| | - Connor Hein
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany
| | - Arne Blickle
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany
| | - Mark Bartholomä
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany
| | - Stephan Maus
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany
| | - Sven Petto
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany
| | - Andrea Schaefer-Schuler
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany
| | - Samer Ezziddin
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany
| | - Florian Rosar
- Department of Nuclear Medicine, Saarland University - Medical Center, Kirrberger Str. 100, Geb. 50, D-66421, Homburg, Germany
| |
Collapse
|
23
|
Unterrainer LM, Calais J, Bander NH. Prostate-Specific Membrane Antigen: Gateway to Management of Advanced Prostate Cancer. Annu Rev Med 2024; 75:49-66. [PMID: 38285513 DOI: 10.1146/annurev-med-081522-031439] [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] [Indexed: 01/31/2024]
Abstract
Prostate-specific membrane antigen (PSMA) as a transmembrane protein is overexpressed by prostate cancer (PC) cells and is accessible for binding antibodies or low-molecular-weight radioligands due to its extracellular portion. Successful targeting of PSMA began with the development of humanized J591 antibody. Due to their faster clearance compared to antibodies, small-molecule radioligands for targeted imaging and therapy of PC have been favored in recent development efforts. PSMA positron emission tomography (PET) imaging has higher diagnostic performance than conventional imaging for initial staging of high-risk PC and biochemical recurrence detection/localization. However, it remains to be demonstrated how to integrate PSMA PET imaging for therapy response assessment and as an outcome endpoint measure in clinical trials. With the recent approval of 177Lu-PSMA-617 by the US Food and Drug Administration for metastatic castration-resistant PC progressing after chemotherapy, the high value of PSMA-targeted therapy was confirmed. Compared to standard of care, PSMA-based radioligand therapy led to a better outcome and a higher quality of life. This review, focusing on the advanced PC setting, provides an overview of different approved and nonapproved PSMA-targeted imaging and therapeutic modalities and discusses the future of PSMA-targeted theranostics, also with an outlook on non-radiopharmaceutical-based PSMA-targeted therapies.
Collapse
Affiliation(s)
- Lena M Unterrainer
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA; ,
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, Munich, Germany
| | - Jeremie Calais
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA; ,
| | - Neil H Bander
- Department of Urology, Weill Cornell Medicine, New York, NY, USA;
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| |
Collapse
|
24
|
Yazdani E, Geramifar P, Karamzade-Ziarati N, Sadeghi M, Amini P, Rahmim A. Radiomics and Artificial Intelligence in Radiotheranostics: A Review of Applications for Radioligands Targeting Somatostatin Receptors and Prostate-Specific Membrane Antigens. Diagnostics (Basel) 2024; 14:181. [PMID: 38248059 PMCID: PMC10814892 DOI: 10.3390/diagnostics14020181] [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: 11/23/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/23/2024] Open
Abstract
Radiotheranostics refers to the pairing of radioactive imaging biomarkers with radioactive therapeutic compounds that deliver ionizing radiation. Given the introduction of very promising radiopharmaceuticals, the radiotheranostics approach is creating a novel paradigm in personalized, targeted radionuclide therapies (TRTs), also known as radiopharmaceuticals (RPTs). Radiotherapeutic pairs targeting somatostatin receptors (SSTR) and prostate-specific membrane antigens (PSMA) are increasingly being used to diagnose and treat patients with metastatic neuroendocrine tumors (NETs) and prostate cancer. In parallel, radiomics and artificial intelligence (AI), as important areas in quantitative image analysis, are paving the way for significantly enhanced workflows in diagnostic and theranostic fields, from data and image processing to clinical decision support, improving patient selection, personalized treatment strategies, response prediction, and prognostication. Furthermore, AI has the potential for tremendous effectiveness in patient dosimetry which copes with complex and time-consuming tasks in the RPT workflow. The present work provides a comprehensive overview of radiomics and AI application in radiotheranostics, focusing on pairs of SSTR- or PSMA-targeting radioligands, describing the fundamental concepts and specific imaging/treatment features. Our review includes ligands radiolabeled by 68Ga, 18F, 177Lu, 64Cu, 90Y, and 225Ac. Specifically, contributions via radiomics and AI towards improved image acquisition, reconstruction, treatment response, segmentation, restaging, lesion classification, dose prediction, and estimation as well as ongoing developments and future directions are discussed.
Collapse
Affiliation(s)
- Elmira Yazdani
- Medical Physics Department, School of Medicine, Iran University of Medical Sciences, Tehran 14496-14535, Iran;
- Finetech in Medicine Research Center, Iran University of Medical Sciences, Tehran 14496-14535, Iran
| | - Parham Geramifar
- Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran 14117-13135, Iran; (P.G.); (N.K.-Z.)
| | - Najme Karamzade-Ziarati
- Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran 14117-13135, Iran; (P.G.); (N.K.-Z.)
| | - Mahdi Sadeghi
- Medical Physics Department, School of Medicine, Iran University of Medical Sciences, Tehran 14496-14535, Iran;
- Finetech in Medicine Research Center, Iran University of Medical Sciences, Tehran 14496-14535, Iran
| | - Payam Amini
- Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran 14496-14535, Iran;
| | - Arman Rahmim
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, BC V5Z 1L3, Canada
- Departments of Radiology and Physics, University of British Columbia, Vancouver, BC V5Z 1L3, Canada
| |
Collapse
|
25
|
Hartrampf PE, Serfling SE, Michalski K, Buck AK, Werner RA. PSMA PET/CT for Response Assessment of 177Lu-PSMA Therapy. Semin Nucl Med 2024; 54:69-76. [PMID: 37357025 DOI: 10.1053/j.semnuclmed.2023.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 06/12/2023] [Indexed: 06/27/2023]
Abstract
Prostate-specific membrane antigen (PSMA) PET/CT has been widely integrated into the management of prostate cancer (PCa) patients with biochemical recurrence, is increasingly used for initial staging in high-risk patients prior to surgery or to identify candidates for PSMA-targeted radioligand therapy (RLT). To date, monitoring response in PCa patients in prospective studies remains the domain of conventional imaging, such as magnetic resonance/CT or bone scintigraphy. With the increasing use of PSMA-targeted PET/CT in PCa, however, varying criteria based on molecular imaging have been established to define progressive disease, including "PSMA PET Progression Criteria," "Response evaluation criteria in PSMA PET/CT (RECIP 1.0)" or consensus statements of respective societies. In the present review, we will discuss the current status of PSMA PET/CT for response monitoring, focusing on PSMA RLT with [177Lu]Lu-labeled PSMA ligands, along with a head-to-head comparison of recently published response criteria.
Collapse
Affiliation(s)
- Philipp E Hartrampf
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany.
| | | | - Kerstin Michalski
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Andreas K Buck
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Rudolf A Werner
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany; The Russell H Morgan Department of Radiology and Radiological Science, Johns Hopkins School of Medicine, Baltimore, MD
| |
Collapse
|
26
|
Qiao Z, Wang S, Wang H, He B, Shi Z, Zhou H, Yang Q, Chen X, You Z, Zhao J, Wang H. Diagnostic capability of 18F-PSMA PET-MRI and pelvic MRI plus bone scan in treatment-naive prostate cancer: a single-center paired validating confirmatory study. Int J Surg 2024; 110:87-94. [PMID: 37738021 PMCID: PMC10793767 DOI: 10.1097/js9.0000000000000787] [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: 07/07/2023] [Accepted: 09/10/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND Radical prostatectomy with pelvic lymph node dissection for the treatment of high-risk localized prostate cancer (PCa) results in long-term benefits in selected patients. But insufficient sensitivity of conventional examinations which are pelvic MRI and bone scan, limits the diagnosis of bone and lymph node metastasis of PCa. This affects the surgical management strategy of a large number of patients. The purpose of this study was to investigate whether 18F-prostate-specific membrane antigen (PSMA) PET-MRI could improve the clinical detection of PCa metastases compared with the conventional pelvic MRI plus bone scan. MATERIALS AND METHODS From April 2020 to April 2023, we prospectively enroled 472 patients with histologically proven PCa in our centre, and 120 patients underwent 18F-PSMA PET-MRI, multiparametric MRI, and bone scan before laparoscopic radical prostatectomy plus lymph node dissection. The accuracy of imaging results in detecting lymph node and bone metastatic lesions was compared between PSMA PET-MRI and MRI plus bone scan. RESULTS In diagnosing lymph node metastasis, PSMA PET-MRI had an area under the curve (AUC) of 0.844 (95% CI: 0.738-0.949, P < 0.001), sensitivity and specificity of 75% and 96%, which performed apparently better than MRI [AUC=0.615 (95% CI: 0.480-0.750, P =0.073)]. PSMA PET-MRI showed excellent expression in the diagnosis of bone metastases, with an AUC of 0.910 (95% CI: 0.840-0.981, P <0.001) compared to 0.700 (95% CI: 0.577-0.823, P =0.001) in bone scanning. PSMA PET-MRI also had higher sensitivity than bone scanning (90% vs. 43%), while lower specificity (92% vs. 97%). CONCLUSION PSMA PET-MRI is superior to conventional imaging at diagnosing metastases in lymph nodes and bones in PCa and can provide a more accurate stagement.
Collapse
Affiliation(s)
| | | | - Haiyan Wang
- Nuclear Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | | | | | | | | | - Xing Chen
- Nuclear Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhiwen You
- Nuclear Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jun Zhao
- Nuclear Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | | |
Collapse
|
27
|
Laudicella R, Bauckneht M, Burger IA. Is There a Role of Interim PSMA PET in Chemotherapy of Prostate Cancer? Semin Nucl Med 2024; 54:87-96. [PMID: 37599149 DOI: 10.1053/j.semnuclmed.2023.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 08/22/2023]
Abstract
While RECIST 1.1 is well established in radiological response assessment, it is of limited use in prostate cancer (PCa) considering that the disease is often seen only as sclerotic bone changes on conventional imaging. Therefore, a molecular imaging-based response assessment including bone scans has been proposed and used in clinical trials, however, due to the flare phenomenon on bone scans this assessment leads to substantial delays in the detection of progression. Indeed, a robust and reliable imaging tool to assess response to chemotherapy in PCa is still warranted. Whether Positron Emission Tomography (PET) targeting the Prostate-Specific Membrane Antigen (PSMA) could achieve this, is still controversial. In this review, we summarized the available data on cytotoxic agents and their impact on PSMA expression, as well as the available data on PSMA PET imaging for response assessment.
Collapse
Affiliation(s)
- Riccardo Laudicella
- Biomedical Department of Internal and Specialist Medicine, Unit of Nuclear Medicine, University of Palermo, Palermo, Italy; Department of Nuclear Medicine, University Hospital Zürich, University of Zürich, Baden, Switzerland
| | - Matteo Bauckneht
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Health Sciences (DISSAL), University of Genova, Genova, Italy
| | - Irene A Burger
- Department of Nuclear Medicine, University Hospital Zürich, University of Zürich, Baden, Switzerland; Department of Nuclear Medicine, Cantonal hospital Baden, Baden, Switzerland.
| |
Collapse
|
28
|
Shagera QA, Karfis I, Kristanto P, Spyridon S, Diamand R, Santapau A, Peltier A, Roumeguère T, Flamen P, Artigas C. PSMA PET/CT for Response Assessment and Overall Survival Prediction in Patients with Metastatic Castration-Resistant Prostate Cancer Treated with Androgen Receptor Pathway Inhibitors. J Nucl Med 2023; 64:1869-1875. [PMID: 37770114 DOI: 10.2967/jnumed.123.265874] [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: 04/14/2023] [Revised: 09/07/2023] [Indexed: 10/02/2023] Open
Abstract
We aimed to evaluate the role of prostate-specific membrane antigen (PSMA) PET/CT for response assessment and outcome prediction in patients with metastatic castration-resistant prostate cancer (mCRPC) treated with androgen receptor pathway inhibitors (ARPIs), including abiraterone acetate or enzalutamide. Methods: We retrospectively analyzed 30 ARPI-treated mCRPC patients who underwent 68Ga-PSMA-11 PET/CT within 8 wk before (baseline) and 12 ± 4 wk after treatment initiation. Total PSMA tumor volume was calculated using the fixed threshold method (SUV ≥ 3). Patients were categorized as PSMA responders (PSMA-Rs) or PSMA nonresponders (PSMA-NRs) on the basis of both European Association of Urology/European Association of Nuclear Medicine (EAU/EANM) criteria and Response Evaluation Criteria in PSMA PET/CT (RECIP) 1.0. PSMA-R included patients with a complete response, a partial response, or stable disease, and PSMA-NR included those with progressive disease. On the basis of prostate-specific antigen (PSA), patients were classified as biochemical responders if PSA decreased by at least 50% and as nonresponders if it did not. The Φ-coefficient was used to evaluate the correlation of PSMA- and PSA-based responses. Survival analysis was performed using the Cox regression hazard model and the Kaplan-Meier method. Predictive accuracy was tested for both response criteria. Results: On the basis of PSMA PET/CT, 13 (43%) patients were PSMA-NR according to the EAU/EANM criteria and 11 (37%) patients were PSMA-NR according to RECIP 1.0. Significant correlations were observed between PSMA- and PSA-based responses for both criteria (Φ = 0.79 and 0.66, respectively). After a median follow-up of 25 mo (interquartile range, 21-43 mo), the median overall survival was significantly longer for PSMA-R than PSMA-NR (54 vs. 22 mo) for both the EAU/EANM criteria and RECIP 1.0, with hazard ratios of 6.9 (95% CI, 1.9-26; P = 0.004) and 5.6 (95% CI, 1.69-18.26, P = 0.005), respectively. No significant difference in predictive accuracy was found between the 2 criteria (C-index, 0.79 vs. 0.76, respectively, P = 0.54). Flare phenomena at the second PSMA PET study were not observed in our cohort. Conclusion: Our results demonstrate that PSMA PET/CT is a valuable imaging biomarker for response assessment and overall survival prediction when performed at 3 mo after ARPI treatment initiation in mCRPC patients. Both proposed PSMA response criteria (EAU/EANM and RECIP 1.0) seem to perform equally well. No PSMA flare was observed. Prospective validation of these findings is strongly needed.
Collapse
Affiliation(s)
- Qaid Ahmed Shagera
- Department of Nuclear Medicine, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Ioannis Karfis
- Department of Nuclear Medicine, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Paulus Kristanto
- Data Centre, Unité de Gestion de l'Information, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Sideris Spyridon
- Department of Oncology, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium; and
| | - Romain Diamand
- Department of Urology, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Albert Santapau
- Department of Nuclear Medicine, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Alexandre Peltier
- Department of Urology, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Thierry Roumeguère
- Department of Urology, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Patrick Flamen
- Department of Nuclear Medicine, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Carlos Artigas
- Department of Nuclear Medicine, Institut Jules Bordet, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium;
| |
Collapse
|
29
|
Huls SJ, Burkett B, Ehman E, Lowe VJ, Subramaniam RM, Kendi AT. Clinical practice in prostate PET imaging. Ther Adv Med Oncol 2023; 15:17588359231213618. [PMID: 38028142 PMCID: PMC10666681 DOI: 10.1177/17588359231213618] [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: 06/12/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
Positron emission tomography (PET) imaging in prostate cancer has advanced significantly in the past decade with prostate cancer targeted radiopharmaceuticals now playing a growing role in diagnosis, staging, and treatment. This narrative review focuses on the most commonly used PET radiopharmaceuticals in the USA: prostate-specific membrane antigen (PSMA), fluciclovine, and choline. 18F-fluorodeoxyglucose (FDG) is used in many other malignancies, but rarely in prostate cancer. Previous literature is discussed regarding each radiopharmaceutical's utility in the settings of screening/diagnosis, initial staging, biochemical recurrence, advanced disease, and evaluation prior to targeted radiopharmaceutical therapy and radiation therapy. PET imaging has demonstrated utility over traditional imaging in various scenarios; however, there are few head-to-head studies comparing PET radiopharmaceuticals. PSMA radiopharmaceuticals are the newest tracers developed and have unique properties and uses, especially at low prostate-specific antigen (PSA) levels. However, each PET radiopharmaceutical has different properties which can affect image interpretation. Choline and fluciclovine have minimal urinary activity, whereas PSMA agents can have high urinary activity which may affect locoregional disease evaluation. Of the three radiopharmaceuticals, only PSMA is approved for both diagnostic and therapeutic indications with 177Lu-PSMA. A variety of diagnostic PET radiotracers for prostate cancer allows for increased flexibility, especially in the setting of supply chain and medication shortages. For the time being, keeping a diverse group of PET radiopharmaceuticals for prostate cancer is justifiable.
Collapse
Affiliation(s)
- Sean J. Huls
- Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester MN 55905, USA
| | - Brian Burkett
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Eric Ehman
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Val J. Lowe
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Rathan M. Subramaniam
- Department of Medicine, University of Otago Medical School, Dunedin, New Zealand
- Department of Radiology, Duke University, Durham, NC, USA
| | - A. Tuba Kendi
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| |
Collapse
|
30
|
Laudicella R, Bauckneht M, Maurer A, Heimer J, Gennari AG, Di Raimondo T, Paone G, Cuzzocrea M, Messerli M, Eberli D, Burger IA. Can We Predict Skeletal Lesion on Bone Scan Based on Quantitative PSMA PET/CT Features? Cancers (Basel) 2023; 15:5471. [PMID: 38001731 PMCID: PMC10670186 DOI: 10.3390/cancers15225471] [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: 10/13/2023] [Revised: 11/13/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023] Open
Abstract
OBJECTIVE The increasing use of PSMA-PET/CT for restaging prostate cancer (PCa) leads to a patient shift from a non-metastatic situation based on conventional imaging (CI) to a metastatic situation. Since established therapeutic pathways have been designed according to CI, it is unclear how this should be translated to the PSMA-PET/CT results. This study aimed to investigate whether PSMA-PET/CT and clinical parameters could predict the visibility of PSMA-positive lesions on a bone scan (BS). METHODS In four different centers, all PCa patients with BS and PSMA-PET/CT within 6 months without any change in therapy or significant disease progression were retrospectively selected. Up to 10 non-confluent clear bone metastases were selected per PSMA-PET/CT and SUVmax, SUVmean, PSMAtot, PSMAvol, density, diameter on CT, and presence of cortical erosion were collected. Clinical variables (age, PSA, Gleason Score) were also considered. Two experienced double-board physicians decided whether a bone metastasis was visible on the BS, with a consensus readout for discordant findings. For predictive performance, a random forest was fit on all available predictors, and its accuracy was assessed using 10-fold cross-validation performed 10 times. RESULTS A total of 43 patients were identified with 222 bone lesions on PSMA-PET/CT. A total of 129 (58.1%) lesions were visible on the BS. In the univariate analysis, all PSMA-PET/CT parameters were significantly associated with the visibility on the BS (p < 0.001). The random forest reached a mean accuracy of 77.6% in a 10-fold cross-validation. CONCLUSIONS These preliminary results indicate that there might be a way to predict the BS results based on PSMA-PET/CT, potentially improving the comparability between both examinations and supporting decisions for therapy selection.
Collapse
Affiliation(s)
- Riccardo Laudicella
- Department of Nuclear Medicine, Cantonal Hospital Baden, 5404 Baden, Switzerland; (R.L.)
- Department of Nuclear Medicine, University Hospital Zurich, University of Zurich, 8006 Zurich, Switzerland
- Nuclear Medicine Unit, Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, University of Messina, 98122 Messina, Italy
| | - Matteo Bauckneht
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
- Department of Health Sciences (DISSAL), University of Genova, 16126 Genova, Italy
| | - Alexander Maurer
- Department of Nuclear Medicine, University Hospital Zurich, University of Zurich, 8006 Zurich, Switzerland
| | - Jakob Heimer
- Department of Mathematics, Seminar for Statistics, ETH Zurich, 8092 Zurich, Switzerland
| | - Antonio G. Gennari
- Department of Nuclear Medicine, University Hospital Zurich, University of Zurich, 8006 Zurich, Switzerland
| | - Tania Di Raimondo
- Department of Health Sciences (DISSAL), University of Genova, 16126 Genova, Italy
| | - Gaetano Paone
- Clinic for Nuclear Medicine and Molecular Imaging, Imaging Institute of Southern Switzerland, Ente Ospedaliero Cantonale, 6500 Bellinzona, Switzerland
| | - Marco Cuzzocrea
- Clinic for Nuclear Medicine and Molecular Imaging, Imaging Institute of Southern Switzerland, Ente Ospedaliero Cantonale, 6500 Bellinzona, Switzerland
| | - Michael Messerli
- Department of Nuclear Medicine, University Hospital Zurich, University of Zurich, 8006 Zurich, Switzerland
| | - Daniel Eberli
- Department of Urology, University Hospital of Zurich, 8006 Zurich, Switzerland
| | - Irene A. Burger
- Department of Nuclear Medicine, Cantonal Hospital Baden, 5404 Baden, Switzerland; (R.L.)
- Department of Nuclear Medicine, University Hospital Zurich, University of Zurich, 8006 Zurich, Switzerland
| |
Collapse
|
31
|
Sharma AP, Kumar R, Chauhan R, Ziauddin SA, Singh S, Singh H, Devana SK, Gorsi U, Bora GS, Mavuduru RS, Kumar S, Mete UK, Mittal BR. Accuracy of combined multi-parametric MRI and PSMA PET-CT in diagnosing localized prostate cancer: newer horizons for a biopsy-free pathway. Eur J Hybrid Imaging 2023; 7:24. [PMID: 37945775 PMCID: PMC10635997 DOI: 10.1186/s41824-023-00182-5] [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: 08/16/2023] [Accepted: 10/05/2023] [Indexed: 11/12/2023] Open
Abstract
INTRODUCTION Prostate-specific antigen (PSA) is a reliable biomarker for identification of prostate cancer, although a biopsy is still the gold standard for detecting prostate cancer. Similar to higher PIRADS lesions on MRI, the maximal standard uptake value (SUV max) on PSMA PET is linked to a higher likelihood of prostate cancer. Can an mpMRI in conjunction with PSMA PET Scan accurately predict prostate cancer and further trigger omission of biopsy similar to other solid organ urological malignancies? METHODS Ga-68 PSMA PET and mpMRI were performed for each patient who was a part of this retrospective study. The PET-positive lesion's maximum standardized uptake value (SUVmax) was recorded. Prostate biopsies were performed on patients who had PSMA PET avid lesions and a PIRADS score of 4 or 5. Robot-assisted radical prostatectomy (RARP) was afterward performed on patients who had cancer on their prostate biopsy. The prostatectomy specimen's histopathological information was recorded. Cutoff values and correlations between the variables were determined using the ROC curves and Pearson's correlation test. RESULT On the basis of suspicious DRE findings or elevated PSA, 70 men underwent mpMRI and PET scans. PIRADS 4 patients had a median (IQR) SUVmax of 8.75 (11.95); whereas, PIRADS 5 patients had an SUVmax of 24.5 (22). The mean SUVmax for patients whose biopsies revealed no cancer was 6.25 ± 1.41. With an AUC of 0.876 on the ROC curve, it was found that there was a significant positive correlation between the results of the mpMRI and PET scans and those of the histopathological investigation. A SUVmax ≥ 8.25 on PSMA PET for a PIRADS 4/5 lesion on mpMRI will aid in correctly predicting malignancy, with a sensitivity of 82.8% and specificity of 100%. CONCLUSION The findings of this study were positive and indicated that patients with a high suspicion of prostate cancer on mpMRI and PSMA PET (PIRADS ≥ 4 and SUVmax ≥ 8.25). This study substantiates the fact that a combination of mpMRI and PSMA PET can accurately predict localized prostate cancer.
Collapse
Affiliation(s)
- Aditya Prakash Sharma
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India.
| | - Rajender Kumar
- Department of Nuclear Medicine, PGIMER, Chandigarh, India
| | - Rohit Chauhan
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India
| | - Shiraz Akif Ziauddin
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India
| | - Shanky Singh
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India
| | | | - Sudheer Kumar Devana
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India
| | - Ujjwal Gorsi
- Department of Radiodiagnosis, PGIMER, Chandigarh, India
| | - Girdhar Singh Bora
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India
| | - Ravimohan S Mavuduru
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India
| | - Santosh Kumar
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India
| | - Uttam K Mete
- Department of Urology, Advance Urology Centre, PGIMER, Nehru Hospital, 160012, Chandigarh, India
| | | |
Collapse
|
32
|
Luo L, Zheng A, Chang R, Li Y, Gao J, Wang Z, Duan X. Evaluating the value of 18F-PSMA-1007 PET/CT in the detection and identification of prostate cancer using histopathology as the standard. Cancer Imaging 2023; 23:108. [PMID: 37924154 PMCID: PMC10623763 DOI: 10.1186/s40644-023-00627-x] [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: 07/04/2023] [Accepted: 10/19/2023] [Indexed: 11/06/2023] Open
Abstract
BACKGROUND Prostate-specific membrane antigen (PSMA) PET/CT is a highly regarded radionuclide imaging modality for prostate cancer (PCa). This study aimed to evaluate the diagnostic performance of 18F-PSMA-1007 PET/CT in detecting intraprostatic lesions of PCa using radical prostatectomy (RP) specimens as a reference standard and to establish an optimal maximum standardized uptake value (SUVmax) cutoff for distinguishing between PCa and non-PCa lesions. METHODS We retrospectively collected 117 patients who underwent 18F-PSMA-1007 PET/CT before RP. The uptake of the index tumor and contralateral non-PCa lesion was assessed. Histopathology of RP specimens was used as the gold standard. Kappa test was used to evaluate the consistency of preoperative PSMA PET/CT staging and postoperative pathological staging. Finally, an SUVmax cutoff value was identified by receiver operating characteristic (ROC) curve analysis to distinguish PCa lesions from non-PCa lesions. A prospective cohort including 76 patients was used to validate the results. RESULTS The detection rate of 18F-PSMA-1007 PET/CT for prostate cancer was 96.6% (113/117). 18F-PSMA-1007 had a sensitivity of 91.2% and a positive predictive value (PPV) of 89.8% for the identification of intraprostatic lesions. The consistency test (Kappa = 0.305) indicated poor agreement between the pathologic T-stage and PSMA PET/CT T-stage. Based on ROC curve analysis, the appropriate SUVmax to diagnose PCa lesions was 8.3 (sensitivity of 71.3% and specificity 96.8%) with an area under the curve (AUC) of 0.93 (P < 0.001). This SUVmax cutoff discriminated PCa lesions from non-PCa lesions with a sensitivity of 74.4%, a specificity of 95.8% in the prospective validation group. CONCLUSIONS 18F-PSMA-1007 PET/CT demonstrated excellent performance in detecting PCa. An optimal SUVmax threshold (8.3) could be utilized to identify lesions of PCa by 18F-PSMA-1007 PET/CT. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04521894, Registered: August 17, 2020.
Collapse
Affiliation(s)
- Liang Luo
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Shaanxi Province, Xi'an, 710061, China
| | - Anqi Zheng
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Shaanxi Province, Xi'an, 710061, China
| | - Ruxi Chang
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Shaanxi Province, Xi'an, 710061, China
| | - Yunxuan Li
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Shaanxi Province, Xi'an, 710061, China
| | - Jungang Gao
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Shaanxi Province, Xi'an, 710061, China
| | - Zhuonan Wang
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Shaanxi Province, Xi'an, 710061, China.
| | - Xiaoyi Duan
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Shaanxi Province, Xi'an, 710061, China.
| |
Collapse
|
33
|
Koehler D. PROMISE V2 - something new, something old and something borrowed. Nat Rev Urol 2023; 20:639-640. [PMID: 37532826 DOI: 10.1038/s41585-023-00807-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Affiliation(s)
- Daniel Koehler
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| |
Collapse
|
34
|
Koehler D, Berliner C, Shenas F, Karimzadeh A, Apostolova I, Klutmann S, Adam G, Sauer M. PSMA hybrid imaging in prostate cancer - current applications and perspectives. ROFO-FORTSCHR RONTG 2023; 195:1001-1008. [PMID: 37348528 DOI: 10.1055/a-2088-9543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
BACKGROUND Prostate cancer (PCa) is the most common malignancy in men and the second most common tumor-associated cause of death in the male population in Germany. Prostate-specific membrane antigen (PSMA)-targeted hybrid imaging using positron emission tomography (PET) in combination with CT or MRI represents a comparably new method that gained increasing importance in the diagnostic process of PCa in recent years. METHOD Current applications of PSMA hybrid imaging were summarized according to the German and European guidelines on PCa. New developments were elaborated based on a literature review of PubMed conducted in 10/22. RESULTS PSMA-PET/CT demonstrated higher detection rates for metastases in high-risk PCa and recurrent PCa after primary therapy than established imaging methods (CT, MRI, and bone scan). Despite promising results from prospective trials in both scenarios and substantial influence on clinical decision making, data regarding the influence of PSMA-PET on PCa-specific and overall survival are still lacking. Hence, PSMA PET/CT is recommended with a "weak" strength rating in most situations. However, its importance in new treatment options like metastasis-directed therapy or PSMA-radioligand therapy expands the scope of PSMA-PET in the clinical routine. CONCLUSION PSMA-targeting hybrid imaging represents the most sensitive diagnostic test in several stages of PCa and allows the development of new treatment strategies. Prospective studies are needed to evaluate the influence of PSMA-PET on patient survival. KEY POINTS · PSMA-PET/CT is superior to conventional imaging in the primary staging of high-risk prostate cancer.. · PSMA hybrid imaging can detect metastases in patients with biochemical recurrence at low PSA values.. · Clinical decision making is frequently influenced by results of PSMA-PET/CT.. CITATION FORMAT · Koehler D, Berliner C, Shenas F et al. PSMA hybrid imaging in prostate cancer - current applications and perspectives. Fortschr Röntgenstr 2023; 195: 1001 - 1008.
Collapse
Affiliation(s)
- Daniel Koehler
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Farzad Shenas
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Amir Karimzadeh
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ivayla Apostolova
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Susanne Klutmann
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Sauer
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| |
Collapse
|
35
|
Kendrick J, Francis RJ, Hassan GM, Rowshanfarzad P, Ong JSL, Barry N, Rusanov B, Ebert MA. Quantitative [ 68Ga]Ga-PSMA-11 PET biomarkers for the analysis of lesion-level progression in biochemically recurrent prostate cancer: a multicentre study. Sci Rep 2023; 13:17673. [PMID: 37848692 PMCID: PMC10582101 DOI: 10.1038/s41598-023-45106-2] [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: 06/30/2023] [Accepted: 10/16/2023] [Indexed: 10/19/2023] Open
Abstract
[68Ga]Ga-PSMA-11 PET has become the standard imaging modality for biochemically recurrent (BCR) prostate cancer (PCa). However, its prognostic value in assessing response at this stage remains uncertain. The study aimed to assess the prognostic significance of radiographic patient-level patterns of progression derived from lesion-level biomarker quantitation in metastatic disease sites. A total of 138 BCR PCa patients with both baseline and follow-up [68Ga]Ga-PSMA-11 PET scans were included in this analysis. Tumour response was quantified at the lesion level using commonly used quantitative parameters (SUVmean, SUVmax, SUVpeak, volume), and patients were classified as systemic, mixed, or no-progression based on these response classifications. A total of 328 matched lesions between baseline and follow-up scans were analysed. The results showed that systemic progressors had a significantly higher risk of death than patients with no progression with SUVmean demonstrating the highest prognostic value (HR = 5.70, 95% CI = 2.63-12.37, p < 0.001, C-Index = 0.69). Moreover, progressive disease as measured by SUVmean using the radiographic PSMA PET Progression Criteria (rPPP) was found to be significantly prognostic for patient overall survival (HR = 3.67, 95% CI = 1.82-7.39, p < 0.001, C-Index = 0.65). This work provides important evidence supporting the prognostic utility of PSMA response quantitation in the BCR setting.
Collapse
Affiliation(s)
- Jake Kendrick
- School of Physics, Mathematics and Computing, The University of Western Australia, Perth, WA, Australia.
- Centre for Advanced Technologies in Cancer Research, Perth, WA, Australia.
| | - Roslyn J Francis
- Medical School, University of Western Australia, Crawley, WA, Australia
- Department of Nuclear Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
- Australian Centre for Quantitative Imaging, University of Western Australia, Crawley, WA, Australia
| | - Ghulam Mubashar Hassan
- School of Physics, Mathematics and Computing, The University of Western Australia, Perth, WA, Australia
| | - Pejman Rowshanfarzad
- School of Physics, Mathematics and Computing, The University of Western Australia, Perth, WA, Australia
- Centre for Advanced Technologies in Cancer Research, Perth, WA, Australia
| | - Jeremy S L Ong
- Department of Nuclear Medicine, Fiona Stanley Hospital, Murdoch, WA, Australia
| | - Nathaniel Barry
- School of Physics, Mathematics and Computing, The University of Western Australia, Perth, WA, Australia
- Centre for Advanced Technologies in Cancer Research, Perth, WA, Australia
| | - Branimir Rusanov
- School of Physics, Mathematics and Computing, The University of Western Australia, Perth, WA, Australia
- Centre for Advanced Technologies in Cancer Research, Perth, WA, Australia
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Martin A Ebert
- School of Physics, Mathematics and Computing, The University of Western Australia, Perth, WA, Australia
- Centre for Advanced Technologies in Cancer Research, Perth, WA, Australia
- Australian Centre for Quantitative Imaging, University of Western Australia, Crawley, WA, Australia
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, WA, Australia
- 5D Clinics, Claremont, WA, Australia
| |
Collapse
|
36
|
Onal C, Guler OC, Torun N, Oymak E, Reyhan M. The significance of metabolic response to neoadjuvant androgen deprivation therapy detected with [ 68Ga]Ga-PSMA-11-PET/CT in high-risk prostate cancer patients treated with definitive radiotherapy. Eur J Nucl Med Mol Imaging 2023; 50:3755-3764. [PMID: 37402832 DOI: 10.1007/s00259-023-06321-1] [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: 05/06/2023] [Accepted: 06/23/2023] [Indexed: 07/06/2023]
Abstract
PURPOSE We examined the prognostic significance of early changes in primary tumor SUV measured with Gallium-68-labeled prostate-specific membrane antigen positron emission tomography ([68Ga]Ga-PSMA-11-PET/CT) and serum PSA values after neoadjuvant androgen deprivation treatment (nADT) in high-risk prostate cancer (PCa) patients treated with definitive radiotherapy (RT). METHODS The clinical data and SUV parameters of 71 PCa patients were reviewed retrospectively. The serum PSA and primary tumor SUV values were calculated before and after the start of ADT. Using univariable and multivariable analyses, the prognostic factors predicting biochemical disease free survival (bDFS) and prostate cancer specific survival (PCSS) were investigated. In addition, logistic regression analysis was used to identify predictors of biochemical failure (BF). RESULTS All but one patient responded with a 98.8% reduction in serum PSA (21.8 ng/mL vs. 0.3 ng/mL; p < 0.001), and 64 patients (91.1%) had a median 66.6% decrease in primary tumor SUV after ADT (13.2 vs. 4.8, p < 0.001). The primary tumor SUV response rate was significantly higher in patients with Gleason score (GS) of 7 than in patients with GS > 7 (59.5% vs. 40.5%; p = 0.04), and it was significantly lower in patients with inadequate treatment response than in those with complete (CR) or partial response (PR) (1.1% vs. 66.1%; p < 0.001). There was a strong and significant correlation (Spearman = 0.41, p < 0.001) and a high concordance (91.5%) between PSA response and SUV response after ADT. With a median follow-up time of 76.1 months, the 5-year bDFS and PCSS rates were 77.2% and 92.2%, respectively. Nineteen patients (26.7%) patients had recurrence at a median of 44.6 months after the completion of RT. In multivariate analysis, lymph node metastasis, GS greater than 7, and SD/PD after nADT were independent predictors of worse bDFS. However, no significant factor for PCSS was identified. In the multivariable logistic regression analysis, advanced age, GS of > 7 disease, lymph node metastasis, and SD or PD after nADT were independent predictors of BF. CONCLUSION These results imply that the metabolic response measured with [68Ga]Ga-PSMA-11-PET/CT after nADT could be used to predict progression in high-risk PCa patients treated with definitive RT.
Collapse
Affiliation(s)
- Cem Onal
- Department of Radiation Oncology, Baskent University Faculty of Medicine, Adana Dr. Turgut Noyan Research and Treatment Center, Adana, 01120, Turkey.
- Department of Radiation Oncology, Baskent University Faculty of Medicine, Ankara, Turkey.
| | - Ozan Cem Guler
- Department of Radiation Oncology, Baskent University Faculty of Medicine, Adana Dr. Turgut Noyan Research and Treatment Center, Adana, 01120, Turkey
| | - Nese Torun
- Department of Nuclear Medicine, Baskent University Faculty of Medicine, Adana Dr. Turgut Noyan Research and Treatment Center, Adana, Turkey
| | - Ezgi Oymak
- Radiation Oncology Unit, Iskenderun Gelisim Hospital, Hatay, Turkey
| | - Mehmet Reyhan
- Department of Nuclear Medicine, Baskent University Faculty of Medicine, Adana Dr. Turgut Noyan Research and Treatment Center, Adana, Turkey
| |
Collapse
|
37
|
Mader N, Schoeler C, Pezeshkpour N, Klimek K, Groener D, Happel C, Tselis N, Mandel P, Grünwald F, Sabet A. Intermittent Radioligand Therapy with 177Lu-PSMA-617 for Oligometastatic Castration-Resistant Prostate Cancer. Cancers (Basel) 2023; 15:4605. [PMID: 37760574 PMCID: PMC10527374 DOI: 10.3390/cancers15184605] [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: 08/17/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
177Lu-PSMA-617 radioligand therapy (177Lu-PSMA-RLT) in patients with metastatic castration-resistant prostate cancer (mCRPC) currently consists of 4-6 cycles of 6.0-7.4 GBq of 177Lu-PSMA-617 each every 6-8 weeks. While safety and efficacy could be demonstrated in larger prospective trials irrespective of the tumor burden at 177Lu-PSMA RLT initiation, increased renal absorbed doses due to a reduced tumor sink effect in early responding, oligometastatic mCRPC patients pose difficulties. Response-adapted, dose distributing, intermittent treatment with up to six cycles has not been routinely performed, due to concerns about the potential loss of disease control. Treatment was discontinued in 19 early-responding patients with oligometastatic tumor burden after two (IQR 2-3) cycles of 177Lu-PSMA-RLT and 6.5 ± 0.7 GBq per cycle and resumed upon 68Ga-PSMA-11-PET/CT-based progression (according to the PCWG3 criteria). Subsequent treatment breaks were imposed if a PSMA-based imaging response could be achieved. A total of five (IQR 3-6) cycles reaching a cumulative activity of 32 ± 11 GBq were applied. A routine blood work-up including blood counts and liver and renal function was measured throughout the 177Lu-PSMA-RLT and follow-up to grade toxicity according to CTCAE v5.0 criteria. Survival outcome was calculated based on the Kaplan-Meier method. In total, treatment-free periods of 9 (IQR 6-17) cumulative months and the application of 177Lu-PSMA-RLT cycles over 16 (IQR 9-22) months could be achieved. Fifteen (84%) patients responded to subsequent cycles after the first treatment break and in 7/19 (37%) patients, intermittent 177Lu-PSMA-RLT consisted of ≥2 treatment breaks. The median PFS was 27 months (95% CI: 23-31) and overall survival was 45 months (95% CI: 28-62). No grade ≥3 hematological or renal toxicities could be observed during the 45 ± 21 months of follow-up. The cumulative mean renal absorbed dose was 16.7 ± 8.3 Gy and 0.53 ± 0.21 Gy/GBq. Intermittent radioligand therapy with 177Lu-PSMA-617 is feasible in early-responding patients with oligometastatic disease. A late onset of progression after subsequent cycles and the absence of significant toxicity warrants further investigation of the concept of intermittent treatment in selected patients.
Collapse
Affiliation(s)
- Nicolai Mader
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (N.M.); (C.S.); (N.P.); (K.K.); (D.G.); (C.H.); (F.G.)
| | - Christina Schoeler
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (N.M.); (C.S.); (N.P.); (K.K.); (D.G.); (C.H.); (F.G.)
| | - Niloufar Pezeshkpour
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (N.M.); (C.S.); (N.P.); (K.K.); (D.G.); (C.H.); (F.G.)
| | - Konrad Klimek
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (N.M.); (C.S.); (N.P.); (K.K.); (D.G.); (C.H.); (F.G.)
| | - Daniel Groener
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (N.M.); (C.S.); (N.P.); (K.K.); (D.G.); (C.H.); (F.G.)
| | - Christian Happel
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (N.M.); (C.S.); (N.P.); (K.K.); (D.G.); (C.H.); (F.G.)
| | - Nikolaos Tselis
- Department of Radiation Oncology, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany;
| | - Philipp Mandel
- Department of Urology, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany;
| | - Frank Grünwald
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (N.M.); (C.S.); (N.P.); (K.K.); (D.G.); (C.H.); (F.G.)
| | - Amir Sabet
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (N.M.); (C.S.); (N.P.); (K.K.); (D.G.); (C.H.); (F.G.)
| |
Collapse
|
38
|
Giovanella L, Garo ML, Cuzzocrea M, Paone G, Herrmann K. Prognostic role of early prostate specific antigen changes after [ 177 Lu]Lu-PSMA radioligand therapy of metastasized prostate cancer: A meta-analysis. Eur J Clin Invest 2023; 53:e14014. [PMID: 37194605 DOI: 10.1111/eci.14014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/29/2023] [Accepted: 04/29/2023] [Indexed: 05/18/2023]
Abstract
BACKGROUND Approximately 10%-20% of prostate cancers progress to metastatic and castration-resistant forms (mCRPC). Radioligand (RLT) therapy with [177 Lu]Lu-prostate-specific membrane antigen (PSMA) is an emerging treatment for metastasized mCRPC and its efficacy is assessed not only but also by prostate specific antigen (PSA) measurement after 12 weeks or more after treatment. Our aim was to evaluate the role of early PSA measurement after RLT in predicting overall survival (OS) of mCRPC patients. METHODS A systematic search on PubMed, Web Of Science and Scopus was performed from January to December 2022. PRISMA guidelines for prognostic studies was adopted. Risk of bias was assessed using quality of prognostic studies (QUIPS). RESULTS Twelve studies at low-intermediate risk of bias, were included in the meta-analysis (1646 patients, mean age 70 years). About 50% of patients showed a PSA decline after 1-2 of [177 Lu]Lu-PSMA, and more than 30% reported a PSA decline ≥50%. The median OS range for patients with any PSA decline was 13-20 months, while for patients with stable or increased PSA, the median OS fell to 6-12 months. The OS rate for a PSA decline after the one-two [177 Lu]Lu-PSMA cycles was 0.39 (95% CI: 0.31-0.50), while OS for a PSA decline ≥50% was 0.69 (95% CI: 0.57-0.83). CONCLUSIONS A PSA decline is observed in almost 50% of mCRPC patients after 1-2 [177 Lu]Lu-PSMA cycles, with a significantly longer OS compared to stable or increased PSA levels, respectively. Accordingly, any PSA decline after 1-2 cycles of therapy should be regarded as a favourable prognostic factor for OS.
Collapse
Affiliation(s)
- Luca Giovanella
- Clinic for Nuclear Medicine and Molecular Imaging, Imaging Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
- Clinic for Nuclear Medicine, University Hospital of Zürich, Zürich, Switzerland
| | - Maria Luisa Garo
- Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
- Research Unit of Cardiac Surgery, Department of Cardiovascular Surgery, Università Campus Bio-Medico, Rome, Italy
| | - Marco Cuzzocrea
- Clinic for Nuclear Medicine and Molecular Imaging, Imaging Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Gaetano Paone
- Clinic for Nuclear Medicine and Molecular Imaging, Imaging Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Ken Herrmann
- Clinic for Nuclear Medicine, Essen University Hospital, Essen, Germany
| |
Collapse
|
39
|
Esen B, Seymen H, Tarim K, Koseoglu E, Bolukbasi Y, Falay O, Selçukbiricik F, Molinas Mandel N, Kordan Y, Demirkol MO, Tilki D, Esen T. Diagnostic Performance of 68Ga-PSMA-11 Positron Emission Tomography/Computed Tomography to Monitor Treatment Response in Patients with Metastatic Prostate Cancer: The Concordance Between Biochemical Response and Prostate-specific Membrane Antigen Results. Eur Urol Focus 2023; 9:832-837. [PMID: 37032281 DOI: 10.1016/j.euf.2023.03.023] [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: 02/22/2023] [Revised: 03/16/2023] [Accepted: 03/29/2023] [Indexed: 04/11/2023]
Abstract
BACKGROUND Treatment response is traditionally monitored using prostate-specific antigen (PSA) and conventional imaging in patients with metastatic prostate cancer (mPCa). OBJECTIVE To assess the diagnostic performance of prostate-specific membrane antigen (PSMA) positron emission tomography (PET)/computed tomography (CT) when monitoring mPCa patients receiving systemic treatment and also to investigate the concordance between PSMA PET response according to the PSMA PET progression (PPP) criteria and biochemical response. DESIGN, SETTING, AND PARTICIPANTS A total of 96 patients with 68Ga-PSMA-11 PET/CT-detected mPCa at baseline PSMA PET/CT (bPSMA) who underwent at least one follow-up scan after receiving systemic treatment were included in the study. PSA levels at bPSMA and follow-up PSMA PET (fPSMA) scans were recorded. The PPP criteria were used to define PSMA progression. Biochemical progression was defined as ≥25% increase in PSA. PSMA PET and PSA responses were dichotomized into progressive disease (PD) versus non-PD, and the concordance between PSA and PSMA responses was evaluated. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS The concordance between PSA and PSMA PET responses was presented using frequencies, percentages, and Cohen's kappa test. RESULTS AND LIMITATIONS A total of 345 serial PSMA PET/CT (96 bPSMA and 249 fPSMA) scans were evaluated. The positivity rates of PSMA PET scans for PSA levels of <0.01, 0.01-0.2, 0.2-4, and >4 ng/ml were 55.6%, 75.0%, 100%, and 98.8%, respectively. PSA and PSMA responses showed moderate-to-high concordance (Cohen's κ = 0.623, p < 0.001). PSA-PSMA discordance was detected in 39 scans (17%). The most common cause of discordance was the discordant results between different metastatic lesions (16/28, 57.1%) in patients with PPP without PSA progression and local progression in prostate (n = 7/11, 63.6%) in patients with PSA progression without PPP. CONCLUSIONS PSMA PET/CT showed very high detection rates of malignant lesions even at very low PSA values and showed significant concordance with PSA response when monitoring treatment response in patients receiving systemic treatment for mPCa. PATIENT SUMMARY This study describes that prostate-specific membrane antigen positron emission tomography (PSMA PET), a new sensitive imaging tool, can detect malignant lesions even at very low prostate-specific antigen values when monitoring metastatic prostate cancer. The PSMA PET response and biochemical response showed significant concordance, and the reason for discordant results seems to be the different responses of metastatic lesions and prostatic lesions to systemic treatment.
Collapse
Affiliation(s)
- Baris Esen
- Department of Urology, Koc University Hospital, Istanbul, Turkey.
| | - Hulya Seymen
- Department of Nuclear Medicine, Koc University Hospital, Istanbul, Turkey
| | - Kayhan Tarim
- Department of Urology, Koc University Hospital, Istanbul, Turkey
| | - Ersin Koseoglu
- Department of Urology, Koc University Hospital, Istanbul, Turkey
| | - Yasemin Bolukbasi
- Department of Radiation Oncology, Koc University Hospital, Istanbul, Turkey
| | - Okan Falay
- Department of Nuclear Medicine, Koc University Hospital, Istanbul, Turkey
| | | | - Nil Molinas Mandel
- Department of Medical Oncology, Koc University Hospital, Istanbul, Turkey
| | - Yakup Kordan
- Department of Urology, Koc University Hospital, Istanbul, Turkey
| | | | - Derya Tilki
- Department of Urology, Koc University Hospital, Istanbul, Turkey; Department of Urology, University Hospital Hamburg-Eppendorf, Hamburg, Germany; Martini-Klinik Prostate Cancer Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Tarık Esen
- Department of Urology, Koc University Hospital, Istanbul, Turkey
| |
Collapse
|
40
|
Abrahamsen BS, Knudtsen IS, Eikenes L, Bathen TF, Elschot M. Pelvic PET/MR attenuation correction in the image space using deep learning. Front Oncol 2023; 13:1220009. [PMID: 37692851 PMCID: PMC10484800 DOI: 10.3389/fonc.2023.1220009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/31/2023] [Indexed: 09/12/2023] Open
Abstract
Introduction The five-class Dixon-based PET/MR attenuation correction (AC) model, which adds bone information to the four-class model by registering major bones from a bone atlas, has been shown to be error-prone. In this study, we introduce a novel method of accounting for bone in pelvic PET/MR AC by directly predicting the errors in the PET image space caused by the lack of bone in four-class Dixon-based attenuation correction. Methods A convolutional neural network was trained to predict the four-class AC error map relative to CT-based attenuation correction. Dixon MR images and the four-class attenuation correction µ-map were used as input to the models. CT and PET/MR examinations for 22 patients ([18F]FDG) were used for training and validation, and 17 patients were used for testing (6 [18F]PSMA-1007 and 11 [68Ga]Ga-PSMA-11). A quantitative analysis of PSMA uptake using voxel- and lesion-based error metrics was used to assess performance. Results In the voxel-based analysis, the proposed model reduced the median root mean squared percentage error from 12.1% and 8.6% for the four- and five-class Dixon-based AC methods, respectively, to 6.2%. The median absolute percentage error in the maximum standardized uptake value (SUVmax) in bone lesions improved from 20.0% and 7.0% for four- and five-class Dixon-based AC methods to 3.8%. Conclusion The proposed method reduces the voxel-based error and SUVmax errors in bone lesions when compared to the four- and five-class Dixon-based AC models.
Collapse
Affiliation(s)
- Bendik Skarre Abrahamsen
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ingerid Skjei Knudtsen
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Live Eikenes
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Tone Frost Bathen
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Radiology and Nuclear Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Mattijs Elschot
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Radiology and Nuclear Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| |
Collapse
|
41
|
Perera M, Touijer KA. Point-Counterpoint: Radioisotope-guided Lymphadenectomy for Pelvic Node Staging: The SENTINELLE Study. J Urol 2023; 210:244-246. [PMID: 37192376 PMCID: PMC10330182 DOI: 10.1097/ju.0000000000003494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 04/12/2023] [Indexed: 05/18/2023]
Affiliation(s)
- Marlon Perera
- Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Karim A Touijer
- Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| |
Collapse
|
42
|
Jadvar H, Park R, Vorobyova I, Chen K. Tracking Docetaxel-Induced Cellular Proliferation Changes in Prostate Tumor-Bearing Mice with 18F-FMAU PET. Acad Radiol 2023; 30:1721-1726. [PMID: 36184379 PMCID: PMC10050216 DOI: 10.1016/j.acra.2022.09.005] [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: 05/26/2022] [Revised: 08/22/2022] [Accepted: 09/05/2022] [Indexed: 11/23/2022]
Abstract
OBJECTIVES The aim of this exploratory preclinical study was to evaluate the efficacy of 18F-FMAU PET in quantitatively measuring cellular proliferation changes in response to a chemotherapeutic agent in experimental prostate cancer models. METHODS AND MATERIALS Docetaxel (DTX) ‒ a standard therapy agent in castrate-resistant metastatic prostate cancer was used as the chemotherapy drug. Athymic male nu/nu mice were inoculated with PC-3 cells in the right flank. After the tumor diameter reached 5 mm, DTX (24 mg/kg) was injected intravenously twice a week, whereas the control group was intravenously administered with saline. The tumor size and body weight were monitored, and longitudinal PET scans were acquired with 18F-FMAU to evaluate tumor cellular proliferation. 18F-FMAU PET scans were performed at 2 hours post-injection of 18F-FMAU on days 0, 11, 18, and 22. Biodistribution studies were carried out after the PET scan on day 22. RESULTS Consecutive administrations of DTX were effective in inhibiting PC-3 tumor growth compared to the control group. For PET imaging, PC-3 tumor uptake of 18F-FMAU in the DTX group was increased significantly from 3.09 ± 0.60 %ID/g (day 0) to 5.32 ± 0.37 %ID/g (day 22), whereas the 18F-FMAU tumor update in the control group remained relatively stable on day 0 (2.37 ± 0.51 %ID/g) vs. day 22 (1.83 ± 0.22 %ID/g). The tumor-to-muscle uptake ratio of 18F-FMAU was increased from 2.63 ± 0.20 (day 0) to 5.91 ± 1.1 (day 22) in the DTX group. On day 22, no statistical significance was observed in the tumor-to-muscle uptake ratio of 18F-FMAU in the DTX group vs. the control group. The tumor-to-liver uptake ratio of 18F-FMAU was also similar on day 22 in the DTX group (4.29 ± 0.09) vs. the control group (3.83 ± 0.59). CONCLUSION 18F-FMAU uptake in implanted PC-3 tumors increases with DTX despite inhibiting tumor growth. Further investigation is needed to decipher the underlying biological mechanism of this apparent flare effect and its relation to the predictability of tumor response to DTX.
Collapse
Affiliation(s)
- Hossein Jadvar
- Molecular Imaging Center, Department of Radiology, USC Keck School of Medicine, University of Southern California, 2250 Alcazar Street, CSC 102, Los Angeles, California, 90033, (H.J., R.P., I.V., K.C.).
| | - Ryan Park
- Molecular Imaging Center, Department of Radiology, USC Keck School of Medicine, University of Southern California, 2250 Alcazar Street, CSC 102, Los Angeles, California, 90033, (H.J., R.P., I.V., K.C.)
| | - Ivetta Vorobyova
- Molecular Imaging Center, Department of Radiology, USC Keck School of Medicine, University of Southern California, 2250 Alcazar Street, CSC 102, Los Angeles, California, 90033, (H.J., R.P., I.V., K.C.)
| | - Kai Chen
- Molecular Imaging Center, Department of Radiology, USC Keck School of Medicine, University of Southern California, 2250 Alcazar Street, CSC 102, Los Angeles, California, 90033, (H.J., R.P., I.V., K.C.)
| |
Collapse
|
43
|
Groener D, Wichert J, Adams M, Mader N, Klimek K, Nguyen Ngoc C, Baumgarten J, Happel C, Mandel P, Chun FKH, Tselis N, Grünwald F, Sabet A. Impact of [ 177Lu]Lu-PSMA-617 Radioligand Therapy on Reference Organ Uptake Assessed by [ 68Ga]Ga-PSMA-11-PET/CT. Cancers (Basel) 2023; 15:3878. [PMID: 37568694 PMCID: PMC10417367 DOI: 10.3390/cancers15153878] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023] Open
Abstract
This study aims to assess the change in uptake to reference organs, including the liver, parotid and salivary glands after radioligand therapy (RLT) with [177Lu]Lu-PSMA-617 in relation to pretreatment imaging metrics. Eighty-five patients with mCRPC underwent [68Ga]Ga-PSMA-11 PET/CT imaging prior to (pre RLT PET) and after (post RLT PET) a median of 3 (IQR 2-6) RLT cycles with [177Lu]Lu-PSMA-617. PSMA-positive tumor burden was stratified into 4 groups based on modified PROMISE criteria (oligofocal, multifocal, disseminated, diffuse). Uptake (SUVmean, SUVmax) in liver tissue, parotid and submandibular glands was measured. A control group was established with 54 patients who had received two separate PET acquisitions following the same protocol (PET1, PET2) within 12 months for localized or oligofocal prostate cancer without RLT in the interim. Baseline uptake values (SUVmean, SUVmax) in parotid (10.8 ± 3.2, 16.8 ± 5.4) and submandibular glands (11.3 ± 2.8, 18.1 ± 4.7) are 2-fold compared to liver uptake (4.9 ± 1.4, 7.7 ± 2.0), with no significant change between PET 1 and PET 2 in the control group. In the RLT group, increasing tumor burden class is significantly associated with decreasing uptake in the liver (p = 0.013), parotid (p < 0.001) and submandibular glands (p < 0.001); this tumor sink effect by respective tumor burden is widely maintained after RLT (p = 0.011, p < 0.001, p < 0.001). RLT has a significant impact on salivary gland uptake with decreasing values per patient in all groups of disease burden change (up to -30.4% in submandibular glands, p < 0.001), while liver tissue shows rising values in patients with declining tumor burden throughout RLT (+18.6%, p = 0.020). Uptake in liver tissue and salivary glands on [68Ga]Ga-PSMA-11 PET/CT imaging is inversely related to tumor burden prior to and following RLT with [177Lu]Lu-PSMA-617. Per patient, salivary gland uptake is further reduced throughout RLT independently from tumor burden, while changes in liver uptake remain burden-dependent. Liver and salivary gland uptake-derived metrics and segmentation thresholds may thus be of limited value when used as reference for response assessment to RLT.
Collapse
Affiliation(s)
- Daniel Groener
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Jennifer Wichert
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Magdalena Adams
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Nicolai Mader
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Konrad Klimek
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Christina Nguyen Ngoc
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Justus Baumgarten
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Christian Happel
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Philipp Mandel
- Department of Urology, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (P.M.); (F.K.H.C.)
| | - Felix K. H. Chun
- Department of Urology, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (P.M.); (F.K.H.C.)
| | - Nikolaos Tselis
- Department of Radiation Oncology, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany;
| | - Frank Grünwald
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| | - Amir Sabet
- Department of Nuclear Medicine, University Hospital Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt, Germany; (D.G.); (J.W.); (M.A.); (N.M.); (K.K.); (C.N.N.); (J.B.); (C.H.)
| |
Collapse
|
44
|
Parghane RV, Basu S. PSMA-targeted radioligand therapy in prostate cancer: current status and future prospects. Expert Rev Anticancer Ther 2023; 23:959-975. [PMID: 37565281 DOI: 10.1080/14737140.2023.2247562] [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: 02/02/2023] [Revised: 06/19/2023] [Accepted: 08/09/2023] [Indexed: 08/12/2023]
Abstract
INTRODUCTION The prostate-specific membrane antigen (PSMA) targeted radioligand therapy (PRLT) for the treatment of metastatic castration-resistant prostate cancer (mCRPC) patients has generated significant interest among the oncologic community, with several publications documenting good response rates and survival benefits with low toxicity profiles. AREAS COVERED Indications, patient preparation, dose administration, post-treatment imaging, dosimetry, and side effect profiles of 177Lu-PSMA-617 are discussed in this article. We also discuss results from prospective studies, major retrospective studies, meta-analyses, clinical trials, and mentioned major ongoing clinical trials on PRLT. We have also portrayed our own experiences and future perspectives on PRLT. EXPERT OPINION For PRLT, PSMA-617 and PSMA-I&T molecules have revolutionized the theranostic approach in the management of advanced prostate cancer, with solid backing from several published articles showing favorable outcomes and an excellent safety profile of 177Lu-PSMA-617. Improvement in quality of life and survival was seen in the majority of mCRPC patients after 177Lu-PSMA-617 PRLT. Patients with good performance status, asymptomatic, only lymph node metastases, high PSMA expressing lesions, and no discordant FDG avid lesions have a longer survival after 177Lu-PSMA-617 PRLT than patients with poor performance status, symptomatic, hepatic, brain, and skeletal metastases, discordant PSMA, and FDG-avid lesions. Docetaxel and cabazitaxel are approved treatments for mCRPC patients. 177Lu-PSMA-617 is approved as a third-line systemic treatment for mCRPC patients with failure to respond to androgen receptor pathway inhibitors and docetaxel therapy. PRLT is a safe and effective alternative to cabazitaxel (third-line systemic treatment), but it has a higher cost. 177Lu-PSMA-617 could be a more efficient therapeutic option for mCRPC patients as first-line or combined therapy, and it may be a useful therapeutic option for the treatment of metastatic hormone-sensitive prostate cancer (mHSPC) patients. Several clinical studies and clinical trials on PRLT are currently underway. In the future, the results of these trials will be helpful in evolving treatment strategies for prostate cancer patients.
Collapse
Affiliation(s)
- Rahul V Parghane
- Radiation Medicine Centre (BARC), Tata Memorial Hospital Annexe, Mumbai, India
- Radiation Medicine Centre (BARC), Homi Bhabha National Institute, Mumbai, India
| | - Sandip Basu
- Radiation Medicine Centre (BARC), Tata Memorial Hospital Annexe, Mumbai, India
- Radiation Medicine Centre (BARC), Homi Bhabha National Institute, Mumbai, India
| |
Collapse
|
45
|
Hoffman A, Amiel GE. The Impact of PSMA PET/CT on Modern Prostate Cancer Management and Decision Making-The Urological Perspective. Cancers (Basel) 2023; 15:3402. [PMID: 37444512 DOI: 10.3390/cancers15133402] [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: 04/22/2023] [Revised: 06/14/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
Prostate-specific membrane antigen (PSMA) PET use in prostate cancer treatment has recently become a routinely used imaging modality by urologists. New, established data regarding its performance in different stages of prostate cancer, as well as gaining clinical knowledge with new tracers, drives the need for urologists and other clinicians to improve the utilization of this tool. While the use of PSMA PET/CT is more common in metastatic disease, in which it outperforms classical imaging modalities and drives treatment decisions and adjustments, recently, it gained ground in localized prostate cancer as well, especially in high-risk disease. Still, PSMA PET/CT might reveal lesions within the prostate or possibly locoregional or metastatic disease, not always representing true cancer when utilized in earlier stages of the disease, potentially adding diagnostic burden and changing treatment decisions. As urological treatment options advance toward focal treatments in localized organ-confined prostate cancer, recent reports suggest the utilization of PSMA PET/CT in treatment planning and follow-up and even when choosing active surveillance. This review aims to reveal the current perspective of urologists regarding its daily use.
Collapse
Affiliation(s)
- Azik Hoffman
- Department of Urology, Rambam Health Care Center, Haifa 3109601, Israel
| | - Gilad E Amiel
- Department of Urology, Rambam Health Care Center, Haifa 3109601, Israel
| |
Collapse
|
46
|
Slootbeek PHJ, Kloots ISH, van Oort IM, Kroeze LI, Schalken JA, Bloemendal HJ, Mehra N. Cross-Resistance between Platinum-Based Chemotherapy and PARP Inhibitors in Castration-Resistant Prostate Cancer. Cancers (Basel) 2023; 15:2814. [PMID: 37345149 PMCID: PMC10216363 DOI: 10.3390/cancers15102814] [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: 04/07/2023] [Revised: 05/12/2023] [Accepted: 05/16/2023] [Indexed: 06/23/2023] Open
Abstract
Patients with metastatic castration-resistant prostate cancer (mCRPC) harbouring homologous recombination repair-related gene aberrations (HRRm) can derive meaningful benefits from both platinum-based chemotherapy (PlCh) and PARP inhibitors (PARPi). Cross-resistance between these agents is well-recognised in other tumour types but data on prostate cancer is lacking. In this retrospective pre-planned study, we assessed 28 HRRm mCRPC patients who received PlCh and PARPi. Progression-free survival (PFS) on initial therapy was longer than on subsequent therapy (median 5.3 vs. 3.4 months, p = 0.016). The median PFS of PlCh was influenced by the order of agents, with 3.6 months shorter PFS after PARPi than when administered first. The median PFS of PARPi was less influenced, with 0.9 months shorter PFS after PlCh than before. In the PARPi-first subgroup, six out of 16 evaluable patients (37.5%) had a >50% PSA decline to PlCh, and two of eight (25.0%) had a radiographic response to PlCh. In the PlCh-first subgroup, 6/10 (60.0%) had a >50% PSA decline, and 5/9 (55.6%) had a radiographic response to PARPi. These data show >40% of the cohort is sensitive to a subsequent HRR-targeting agent. PlCh appears to induce less cross-resistance than PARPi. Additional data on resistance mechanisms will be crucial in defining an optimal treatment sequence in HRRm mCRPC patients.
Collapse
Affiliation(s)
- Peter H. J. Slootbeek
- Department of Medical Oncology, Radboud University Medical Center, Geert Grooteplein-Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Iris S. H. Kloots
- Department of Medical Oncology, Radboud University Medical Center, Geert Grooteplein-Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Inge M. van Oort
- Department of Urology, Radboud University Medical Center, Geert Grooteplein-Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Leonie I. Kroeze
- Department of Pathology, Radboud University Medical Center, Geert Grooteplein-Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Jack A. Schalken
- Department of Urology, Radboud University Medical Center, Geert Grooteplein-Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Haiko J. Bloemendal
- Department of Medical Oncology, Radboud University Medical Center, Geert Grooteplein-Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Niven Mehra
- Department of Medical Oncology, Radboud University Medical Center, Geert Grooteplein-Zuid 10, 6525 GA Nijmegen, The Netherlands
| |
Collapse
|
47
|
Pan J, Zhao J, Ni X, Zhu B, Hu X, Wang Q, Wei Y, Zhang T, Gan H, Wang B, Wu J, Song S, Liu C, Ye D, Zhu Y. Heterogeneity of [ 68Ga]Ga-PSMA-11 PET/CT in metastatic castration-resistant prostate cancer: genomic characteristics and association with abiraterone response. Eur J Nucl Med Mol Imaging 2023; 50:1822-1832. [PMID: 36719427 DOI: 10.1007/s00259-023-06123-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 01/21/2023] [Indexed: 02/01/2023]
Abstract
PURPOSE The aim of this study was to evaluate the impact of the spatial heterogeneity of prostate-specific membrane antigen (PSMA) uptake on circulating tumor DNA (ctDNA) characteristics and the response rate to new hormonal agent (NHA) treatment. METHODS This retrospective study included 153 patients with metastatic castration-resistant prostate cancer (mCRPC) who underwent gallium-68 [68 Ga]Ga-PSMA-11 positron emission tomography/computed tomography (PET/CT) and ctDNA sequencing with a less than 2-week interval. SUVhetero was defined as the variance of SUVmean for each PSMA-positive lesion. SUVmax-mean was obtained by subtracting the SUVmax by the SUVmean. Patients receiving abiraterone treatment after [68 Ga]Ga-PSMA-11 PET/CT and ctDNA sequencing and with complete follow-up record were included into prostate-specific antigen (PSA) response rate analysis. PSA response was defined as a reduction of greater than 50% from baseline. RESULTS The ctDNA detection rate was 65% (100/153). Higher SUVhetero value contributed to higher ctDNA% (Spearman's rho = 0.278, p < 0.002). A total of 60 patients were included in PSA response rate analysis. The median follow-up was 19.3 (IQR 16.2-23.2) months. Compare to patients with higher SUVhetero value, patients with NA SUVhetero had a higher PSA response rate (52% vs. 90%, p = 0.036). A higher SUVmax-mean value was strongly correlated with higher SUVhetero (Spearman's rho = 0.833, p < 0.0001). Patients with higher SUVmax-mean value also had a higher PSA response rate compared to patients with lower SUVmax-mean value (83.3% vs. 53.3%, p = 0.024). An external cohort confirmed baseline SUVmax-mean value was associated with enzalutamide treatment response rate. Patients with alterations in AR, DNA damage repair pathway, TP53, AR-associated pathway, cell cycle pathway, or WNT pathway had higher SUVmax-mean value compared to those without (p < 0.05). CONCLUSION Spatial heterogeneity of the PSMA uptake was associated with ctDNA characteristics and response rate to NHA treatment.
Collapse
Affiliation(s)
- Jian Pan
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jinou Zhao
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xudong Ni
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Bin Zhu
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xiaoxin Hu
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Qifeng Wang
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yu Wei
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Tingwei Zhang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hualei Gan
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Beihe Wang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.
- Shanghai Genitourinary Cancer Institute, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Junlong Wu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.
- Shanghai Genitourinary Cancer Institute, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Shaoli Song
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China.
| | - Chang Liu
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China.
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.
- Shanghai Genitourinary Cancer Institute, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Yao Zhu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.
- Shanghai Genitourinary Cancer Institute, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| |
Collapse
|
48
|
Gillessen S, Bossi A, Davis ID, de Bono J, Fizazi K, James ND, Mottet N, Shore N, Small E, Smith M, Sweeney CJ, Tombal B, Antonarakis ES, Aparicio AM, Armstrong AJ, Attard G, Beer TM, Beltran H, Bjartell A, Blanchard P, Briganti A, Bristow RG, Bulbul M, Caffo O, Castellano D, Castro E, Cheng HH, Chi KN, Chowdhury S, Clarke CS, Clarke N, Daugaard G, De Santis M, Duran I, Eeles R, Efstathiou E, Efstathiou J, Ekeke ON, Evans CP, Fanti S, Feng FY, Fonteyne V, Fossati N, Frydenberg M, George D, Gleave M, Gravis G, Halabi S, Heinrich D, Herrmann K, Higano C, Hofman MS, Horvath LG, Hussain M, Jereczek-Fossa BA, Jones R, Kanesvaran R, Kellokumpu-Lehtinen PL, Khauli RB, Klotz L, Kramer G, Leibowitz R, Logothetis C, Mahal B, Maluf F, Mateo J, Matheson D, Mehra N, Merseburger A, Morgans AK, Morris MJ, Mrabti H, Mukherji D, Murphy DG, Murthy V, Nguyen PL, Oh WK, Ost P, O'Sullivan JM, Padhani AR, Pezaro CJ, Poon DMC, Pritchard CC, Rabah DM, Rathkopf D, Reiter RE, Rubin MA, Ryan CJ, Saad F, Sade JP, Sartor O, Scher HI, Sharifi N, Skoneczna I, Soule H, Spratt DE, Srinivas S, Sternberg CN, Steuber T, Suzuki H, Sydes MR, Taplin ME, Tilki D, Türkeri L, Turco F, Uemura H, Uemura H, Ürün Y, Vale CL, van Oort I, Vapiwala N, Walz J, Yamoah K, Ye D, Yu EY, Zapatero A, Zilli T, Omlin A. Management of patients with advanced prostate cancer-metastatic and/or castration-resistant prostate cancer: Report of the Advanced Prostate Cancer Consensus Conference (APCCC) 2022. Eur J Cancer 2023; 185:178-215. [PMID: 37003085 DOI: 10.1016/j.ejca.2023.02.018] [Citation(s) in RCA: 41] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 02/22/2023] [Indexed: 03/06/2023]
Abstract
BACKGROUND Innovations in imaging and molecular characterisation together with novel treatment options have improved outcomes in advanced prostate cancer. However, we still lack high-level evidence in many areas relevant to making management decisions in daily clinical practise. The 2022 Advanced Prostate Cancer Consensus Conference (APCCC 2022) addressed some questions in these areas to supplement guidelines that mostly are based on level 1 evidence. OBJECTIVE To present the voting results of the APCCC 2022. DESIGN, SETTING, AND PARTICIPANTS The experts voted on controversial questions where high-level evidence is mostly lacking: locally advanced prostate cancer; biochemical recurrence after local treatment; metastatic hormone-sensitive, non-metastatic, and metastatic castration-resistant prostate cancer; oligometastatic prostate cancer; and managing side effects of hormonal therapy. A panel of 105 international prostate cancer experts voted on the consensus questions. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS The panel voted on 198 pre-defined questions, which were developed by 117 voting and non-voting panel members prior to the conference following a modified Delphi process. A total of 116 questions on metastatic and/or castration-resistant prostate cancer are discussed in this manuscript. In 2022, the voting was done by a web-based survey because of COVID-19 restrictions. RESULTS AND LIMITATIONS The voting reflects the expert opinion of these panellists and did not incorporate a standard literature review or formal meta-analysis. The answer options for the consensus questions received varying degrees of support from panellists, as reflected in this article and the detailed voting results are reported in the supplementary material. We report here on topics in metastatic, hormone-sensitive prostate cancer (mHSPC), non-metastatic, castration-resistant prostate cancer (nmCRPC), metastatic castration-resistant prostate cancer (mCRPC), and oligometastatic and oligoprogressive prostate cancer. CONCLUSIONS These voting results in four specific areas from a panel of experts in advanced prostate cancer can help clinicians and patients navigate controversial areas of management for which high-level evidence is scant or conflicting and can help research funders and policy makers identify information gaps and consider what areas to explore further. However, diagnostic and treatment decisions always have to be individualised based on patient characteristics, including the extent and location of disease, prior treatment(s), co-morbidities, patient preferences, and treatment recommendations and should also incorporate current and emerging clinical evidence and logistic and economic factors. Enrolment in clinical trials is strongly encouraged. Importantly, APCCC 2022 once again identified important gaps where there is non-consensus and that merit evaluation in specifically designed trials. PATIENT SUMMARY The Advanced Prostate Cancer Consensus Conference (APCCC) provides a forum to discuss and debate current diagnostic and treatment options for patients with advanced prostate cancer. The conference aims to share the knowledge of international experts in prostate cancer with healthcare providers worldwide. At each APCCC, an expert panel votes on pre-defined questions that target the most clinically relevant areas of advanced prostate cancer treatment for which there are gaps in knowledge. The results of the voting provide a practical guide to help clinicians discuss therapeutic options with patients and their relatives as part of shared and multidisciplinary decision-making. This report focuses on the advanced setting, covering metastatic hormone-sensitive prostate cancer and both non-metastatic and metastatic castration-resistant prostate cancer. TWITTER SUMMARY Report of the results of APCCC 2022 for the following topics: mHSPC, nmCRPC, mCRPC, and oligometastatic prostate cancer. TAKE-HOME MESSAGE At APCCC 2022, clinically important questions in the management of advanced prostate cancer management were identified and discussed, and experts voted on pre-defined consensus questions. The report of the results for metastatic and/or castration-resistant prostate cancer is summarised here.
Collapse
Affiliation(s)
- Silke Gillessen
- Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland; Università della Svizzera Italiana, Lugano, Switzerland.
| | - Alberto Bossi
- Genitourinary Oncology, Prostate Brachytherapy Unit, Gustave Roussy, Paris, France
| | - Ian D Davis
- Monash University and Eastern Health, Victoria, Australia
| | - Johann de Bono
- The Institute of Cancer Research, London, UK; Royal Marsden Hospital, London, UK
| | - Karim Fizazi
- Institut Gustave Roussy, University of Paris Saclay, Villejuif, France
| | | | | | - Neal Shore
- Medical Director, Carolina Urologic Research Center, Myrtle Beach, SC, USA; CMO, Urology/Surgical Oncology, GenesisCare, Myrtle Beach, SC, USA
| | - Eric Small
- UCSF Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, USA
| | - Matthew Smith
- Massachusetts General Hospital Cancer Center, Boston, MA, USA
| | - Christopher J Sweeney
- South Australian Immunogenomics Cancer Institute, University of Adelaide, Adelaide, SA, Australia
| | | | | | - Ana M Aparicio
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Andrew J Armstrong
- Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC, USA
| | | | - Tomasz M Beer
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Himisha Beltran
- Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Anders Bjartell
- Department of Urology, Skåne University Hospital, Malmö, Sweden
| | - Pierre Blanchard
- Gustave Roussy, Département de Radiothérapie, Université Paris-Saclay, Oncostat, Inserm U-1018, F-94805, Villejuif, France
| | - Alberto Briganti
- Unit of Urology/Division of Oncology, URI, IRCCS Ospedale San Raffaele, Vita-Salute San Raffaele University, Milan, Italy
| | - Rob G Bristow
- Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; Christie NHS Trust and CRUK Manchester Institute and Cancer Centre, Manchester, UK
| | - Muhammad Bulbul
- Division of Urology, Department of Surgery, American University of Beirut Medical Center, Beirut, Lebanon
| | - Orazio Caffo
- Department of Medical Oncology, Santa Chiara Hospital, 38122 Trento, Italy
| | - Daniel Castellano
- Medical Oncology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Elena Castro
- Institute of Biomedical Research in Málaga (IBIMA), Málaga, Spain
| | - Heather H Cheng
- University of Washington, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Kim N Chi
- BC Cancer, Vancouver Prostate Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Simon Chowdhury
- Guys and St Thomas's NHS Foundation Trust, London, United Kingdom
| | - Caroline S Clarke
- Research Department of Primary Care & Population Health, Royal Free Campus, University College London, London, UK
| | - Noel Clarke
- The Christie and Salford Royal Hospitals, Manchester, UK
| | - Gedske Daugaard
- Department of Oncology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Maria De Santis
- Department of Urology, Charité Universitätsmedizin, Berlin, Germany; Department of Urology, Medical University of Vienna, Austria
| | - Ignacio Duran
- Department of Medical Oncology, Hospital Universitario Marques de Valdecilla, IDIVAL, Santander, Cantabria, Spain
| | - Ross Eeles
- The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, London, UK
| | | | - Jason Efstathiou
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - Onyeanunam Ngozi Ekeke
- Department of Surgery, University of Port Harcourt Teaching Hospital, Alakahia, Port Harcourt, Nigeria
| | | | - Stefano Fanti
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Felix Y Feng
- University of California, San Francisco, San Francisco, CA, USA
| | - Valerie Fonteyne
- Department of Radiation-Oncology, Ghent University Hospital, Ghent, Belgium
| | - Nicola Fossati
- Department of Urology, Ospedale Regionale di Lugano, Civico USI - Università della Svizzera Italiana, Lugano, Switzerland
| | - Mark Frydenberg
- Department of Surgery, Prostate Cancer Research Program, Department of Anatomy & Developmental Biology, Faculty Nursing, Medicine & Health Sciences, Monash University, Melbourne, Australia
| | - Dan George
- Departments of Medicine and Surgery, Duke Cancer Institute, Duke University, Durham, NC, USA
| | - Martin Gleave
- Urological Sciences, Vancouver Prostate Centre, University of British Columbia, Vancouver, Canada
| | - Gwenaelle Gravis
- Department of Medical Oncology, Institut Paoli Calmettes, Aix-Marseille Université, Marseille, France
| | - Susan Halabi
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, USA
| | - Daniel Heinrich
- Department of Oncology and Radiotherapy, Innlandet Hospital Trust, Gjøvik, Norway
| | - Ken Herrmann
- Department of Nuclear Medicine, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Essen, Germany
| | - Celestia Higano
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Michael S Hofman
- Prostate Cancer Theranostics and Imaging Centre of Excellence, Department of Molecular Imaging and Therapeutic Nuclear Medicine, Peter MacCallum Cancer Centre and Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia
| | - Lisa G Horvath
- Chris O'Brien Lifehouse, Camperdown, NSW, Australia; Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW, Australia; The University of Sydney, Sydney, NSW, Australia
| | - Maha Hussain
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL, USA
| | - Barbara A Jereczek-Fossa
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy; Department of Radiotherapy, European Institute of Oncology (IEO) IRCCS, Milan, Italy
| | - Rob Jones
- School of Cancer Sciences, University of Glasgow, United Kingdom
| | | | - Pirkko-Liisa Kellokumpu-Lehtinen
- Faculty of Medicine and Health Technology, Tampere University and Tampere Cancer Center, Tampere, Finland; Research, Development and Innovation Center, Tampere University Hospital, Tampere, Finland
| | - Raja B Khauli
- Division of Urology and the Naef K. Basile Cancer Institute (NKBCI), American University of Beirut Medical Center, Beirut, Lebanon
| | - Laurence Klotz
- Division of Urology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - Gero Kramer
- Department of Urology, Medical University of Vienna, Vienna, Austria
| | - Raja Leibowitz
- Oncology Institute, Shamir Medical Center, Be'er Ya'akov, Israel; Faculty of Medicine, Tel-Aviv University, Israel
| | - Christopher Logothetis
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; University of Athens Alexandra Hospital, Athens, Greece
| | - Brandon Mahal
- Department of Radiation Oncology, University of Miami Sylvester Cancer Center, Miami, FL, USA
| | - Fernando Maluf
- Beneficiência Portuguesa de São Paulo, São Paulo, SP, Brasil; Departamento de Oncologia, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Joaquin Mateo
- Department of Medical Oncology and Prostate Cancer Translational Research Group. Vall d'Hebron Institute of Oncology (VHIO) and Vall d'Hebron University Hospital, Barcelona, Spain
| | - David Matheson
- Faculty of Education, Health and Wellbeing, Walsall Campus, Walsall, UK
| | - Niven Mehra
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Axel Merseburger
- Department of Urology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Alicia K Morgans
- Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael J Morris
- Genitourinary Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Hind Mrabti
- National Institute of Oncology, Mohamed V University, Rabat, Morocco
| | - Deborah Mukherji
- Clemenceau Medical Center Dubai, United Arab Emirates, Faculty of Medicine, American University of Beirut, Lebanon
| | - Declan G Murphy
- Division of Cancer Surgery, Peter MacCallum Cancer Centre, Melbourne, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Australia
| | | | - Paul L Nguyen
- Department of Radiation Oncology, Brigham and Women's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - William K Oh
- Chief, Division of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, The Tisch Cancer Institute, New York, NY, USA
| | - Piet Ost
- Department of Human Structure and Repair, Ghent University, Ghent, Belgium; Department of Radiation Oncology, Iridium Netwerk, Antwerp, Belgium, Ghent University, Ghent, Belgium
| | - Joe M O'Sullivan
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Northern Ireland Cancer Centre, Belfast City Hospital, Belfast, Northern Ireland
| | - Anwar R Padhani
- Mount Vernon Cancer Centre and Institute of Cancer Research, London, UK
| | - Carmel J Pezaro
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Darren M C Poon
- Comprehensive Oncology Centre, Hong Kong Sanatorium & Hospital, Hong Kong; The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Colin C Pritchard
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, USA
| | - Danny M Rabah
- Cancer Research Chair and Department of Surgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia; Department of Urology, KFSHRC Riyadh, Saudi Arabia
| | - Dana Rathkopf
- Genitourinary Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - Mark A Rubin
- Bern Center for Precision Medicine and Department for Biomedical Research, Bern, Switzerland
| | - Charles J Ryan
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Fred Saad
- Centre Hospitalier de Université de Montréal, Montreal, Canada
| | | | | | - Howard I Scher
- Genitourinary Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Nima Sharifi
- Department of Hematology and Oncology, Cleveland Clinic Taussig Cancer Institute, Cleveland, OH, USA; Department of Cancer Biology, GU Malignancies Research Center, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Iwona Skoneczna
- Rafal Masztak Grochowski Hospital, Maria Sklodowska Curie National Research Institute of Oncology, Warsaw, Poland
| | - Howard Soule
- Prostate Cancer Foundation, Santa Monica, CA, USA
| | - Daniel E Spratt
- University Hospitals Seidman Cancer Center, Cleveland, OH, USA
| | - Sandy Srinivas
- Division of Medical Oncology, Stanford University Medical Center, Stanford, CA, USA
| | - Cora N Sternberg
- Englander Institute for Precision Medicine, Weill Cornell Medicine, Division of Hematology and Oncology, Meyer Cancer Center, New York Presbyterian Hospital, New York, NY, USA
| | - Thomas Steuber
- Martini-Klinik Prostate Cancer Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany; Department of Urology, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | - Matthew R Sydes
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, University College London, London, UK
| | - Mary-Ellen Taplin
- Department of Medical Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Derya Tilki
- Martini-Klinik Prostate Cancer Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany; Department of Urology, University Hospital Hamburg-Eppendorf, Hamburg, Germany; Department of Urology, Koc University Hospital, Istanbul, Turkey
| | - Levent Türkeri
- Department of Urology, M.A. Aydınlar Acıbadem University, Altunizade Hospital, Istanbul, Turkey
| | - Fabio Turco
- Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland
| | - Hiroji Uemura
- Yokohama City University Medical Center, Yokohama, Japan
| | - Hirotsugu Uemura
- Department of Urology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Yüksel Ürün
- Department of Medical Oncology, Ankara University School of Medicine, Ankara, Turkey; Ankara University Cancer Research Institute, Ankara, Turkey
| | - Claire L Vale
- University College London, MRC Clinical Trials Unit at UCL, London, UK
| | - Inge van Oort
- Department of Urology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Neha Vapiwala
- Department of Radiation Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - Jochen Walz
- Department of Urology, Institut Paoli-Calmettes Cancer Centre, Marseille, France
| | - Kosj Yamoah
- Department of Radiation Oncology & Cancer Epidemiology, H. Lee Moffitt Cancer Center & Research Institute, University of South Florida, Tampa, FL, USA
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Evan Y Yu
- Department of Medicine, Division of Oncology, University of Washington and Fred Hutchinson Cancer Center, G4-830, Seattle, WA, USA
| | - Almudena Zapatero
- Department of Radiation Oncology, Hospital Universitario de La Princesa, Health Research Institute, Madrid, Spain
| | - Thomas Zilli
- Radiation Oncology, Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland; Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Aurelius Omlin
- Onkozentrum Zurich, University of Zurich and Tumorzentrum Hirslanden Zurich, Switzerland
| |
Collapse
|
49
|
Duriseti S, Berenji G, Tsai S, Rettig M, Nickols NG. Quantitative assessment of PSMA PET response to therapy in castration-sensitive prostate cancer using an automated imaging platform for disease identification and measurement. Eur J Hybrid Imaging 2023; 7:7. [PMID: 37009941 PMCID: PMC10068685 DOI: 10.1186/s41824-023-00165-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/14/2023] [Indexed: 04/04/2023] Open
Abstract
RATIONALE Prostate cancer treatment response may be automatically quantified using a molecular imaging analysis platform targeting prostate-specific membrane antigen (PSMA). METHODS A retrospective analysis of patients with castration-sensitive prostate cancer who underwent PSMA-targeted molecular imaging prior to and 3 months or more after treatment was conducted. Disease burden was analyzed with aPROMISE, an artificial intelligence imaging platform that automatically quantifies PSMA-positive lesions. The calculated PSMA scores for prostate/bed, nodal, and osseous disease sites were compared with prostate-specific antigen (PSA) values. RESULTS Of 30 eligible patients, the median decline in prostate/bed, nodal, and osseous disease PSMA scores were 100% (range 52-100%), 100% (range - 87-100%), and 100% (range - 21-100%), respectively. PSMA score decline was significantly associated with PSA decline. CONCLUSION Changes in aPROMISE PSMA scores are associated with changes in PSA and may quantify treatment response.
Collapse
Affiliation(s)
- Sai Duriseti
- VA Greater Los Angeles, Radiation Oncology Service, 11301 Wilshire Blvd, Building 500, Suite 0426, Los Angeles, CA, 90073, USA.
- Departments of Radiation Oncology, University of California, Los Angeles, 200 UCLA Medical Plaza, Suite B265, Los Angeles, CA, 90095, USA.
| | - Gholam Berenji
- VA Greater Los Angeles, Nuclear Medicine Service, 11301 Wilshire Blvd, Building 500, Suite 0090, Los Angeles, CA, 90073, USA
- Radiological Sciences, University of California, Los Angeles, 200 Medical Plaza, Suite B-114, Los Angeles, CA, 90095, USA
| | - Sonny Tsai
- Greater Los Angeles VA, Hematology and Oncology Section, 11301 Wilshire Blvd. Building 304, Suite E2-218, Los Angeles, CA, 90073, USA
| | - Matthew Rettig
- Greater Los Angeles VA, Hematology and Oncology Section, 11301 Wilshire Blvd. Building 304, Suite E2-218, Los Angeles, CA, 90073, USA
- Department of Urology, University of California, Los Angeles, 200 Medical Plaza, Suite 140, Los Angeles, CA, 90095, USA
- Department of Medicine, University of California, Los Angeles, 200 Medical Plaza, Suite 140, Los Angeles, CA, 90095, USA
| | - Nicholas G Nickols
- VA Greater Los Angeles, Radiation Oncology Service, 11301 Wilshire Blvd, Building 500, Suite 0426, Los Angeles, CA, 90073, USA
- Departments of Radiation Oncology, University of California, Los Angeles, 200 UCLA Medical Plaza, Suite B265, Los Angeles, CA, 90095, USA
- Department of Urology, University of California, Los Angeles, 200 Medical Plaza, Suite 140, Los Angeles, CA, 90095, USA
| |
Collapse
|
50
|
Lindgren Belal S, Larsson M, Holm J, Buch-Olsen KM, Sörensen J, Bjartell A, Edenbrandt L, Trägårdh E. Automated quantification of PET/CT skeletal tumor burden in prostate cancer using artificial intelligence: The PET index. Eur J Nucl Med Mol Imaging 2023; 50:1510-1520. [PMID: 36650356 PMCID: PMC10027829 DOI: 10.1007/s00259-023-06108-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 01/05/2023] [Indexed: 01/19/2023]
Abstract
PURPOSE Consistent assessment of bone metastases is crucial for patient management and clinical trials in prostate cancer (PCa). We aimed to develop a fully automated convolutional neural network (CNN)-based model for calculating PET/CT skeletal tumor burden in patients with PCa. METHODS A total of 168 patients from three centers were divided into training, validation, and test groups. Manual annotations of skeletal lesions in [18F]fluoride PET/CT scans were used to train a CNN. The AI model was evaluated in 26 patients and compared to segmentations by physicians and to a SUV 15 threshold. PET index representing the percentage of skeletal volume taken up by lesions was estimated. RESULTS There was no case in which all readers agreed on prevalence of lesions that the AI model failed to detect. PET index by the AI model correlated moderately strong to physician PET index (mean r = 0.69). Threshold PET index correlated fairly with physician PET index (mean r = 0.49). The sensitivity for lesion detection was 65-76% for AI, 68-91% for physicians, and 44-51% for threshold depending on which physician was considered reference. CONCLUSION It was possible to develop an AI-based model for automated assessment of PET/CT skeletal tumor burden. The model's performance was superior to using a threshold and provides fully automated calculation of whole-body skeletal tumor burden. It could be further developed to apply to different radiotracers. Objective scan evaluation is a first step toward developing a PET/CT imaging biomarker for PCa skeletal metastases.
Collapse
Affiliation(s)
- Sarah Lindgren Belal
- Division of Nuclear Medicine, Department of Translational Medicine, Lund University, Malmö, Sweden.
- Department of Surgery, Skåne University Hospital, Malmö, Sweden.
- Wallenberg Center for Molecular Medicine, Lund University, Malmö, Sweden.
| | | | - Jorun Holm
- Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark
| | | | - Jens Sörensen
- Division of Radiology, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Anders Bjartell
- Division of Urological Cancer, Department of Translational Medicine, Lund University, Malmö, Sweden
| | - Lars Edenbrandt
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Elin Trägårdh
- Division of Nuclear Medicine, Department of Translational Medicine, Lund University, Malmö, Sweden
- Wallenberg Center for Molecular Medicine, Lund University, Malmö, Sweden
| |
Collapse
|