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McBriar JD, Shafiian N, Scharf S, Boockvar JA, Wernicke AG. Prostate-Specific Membrane Antigen Use in Glioma Management: Past, Present, and Future. Clin Nucl Med 2024; 49:806-816. [PMID: 38968568 DOI: 10.1097/rlu.0000000000005365] [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: 07/07/2024]
Abstract
BACKGROUND Prostate-specific membrane antigen (PSMA) is a membrane-bound metallopeptidase highly expressed in the neovasculature of many solid tumors including gliomas. It is a particularly enticing therapeutic target due to its ability to internalize, thereby delivering radioligands or pharmaceuticals to the intracellular compartment. Targeting the neovasculature of gliomas using PSMA for diagnosis and management has been a recent area of increased study and promise. The purpose of this review is to synthesize the current state and future directions of PSMA use in the histopathologic study, imaging, and treatment of gliomas. METHODS PubMed and Scopus databases were used to conduct a literature review on PSMA use in gliomas in June 2023. Terms searched included "PSMA," "Prostate-Specific Membrane Antigen" OR "PSMA" OR "PSMA PET" AND "glioma" OR "high grade glioma" OR "glioblastoma" OR "GBM." RESULTS Ninety-four publications were screened for relevance with 61 studies, case reports, and reviews being read to provide comprehensive context for the historical, contemporary, and prospective use of PSMA in glioma management. CONCLUSIONS PSMA PET imaging is currently a promising and accurate radiographic tool for the diagnosis and management of gliomas. PSMA histopathology likely represents a viable tool for helping predict glioma behavior. More studies are needed to investigate the role of PSMA-targeted therapeutics in glioma management, but preliminary reports have indicated its potential usefulness in treatment.
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Affiliation(s)
- Joshua D McBriar
- From the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell
| | - Neeva Shafiian
- From the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell
| | | | | | - A Gabriella Wernicke
- Radiation Medicine, Lenox Hill Hospital, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, New York, NY
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2
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Engin MN, Boz A. Intramuscular Granular Cell Tumor Detected on 68 Ga-PSMA PET/CT. Clin Nucl Med 2024; 49:e319-e320. [PMID: 38689441 DOI: 10.1097/rlu.0000000000005245] [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: 05/02/2024]
Abstract
ABSTRACT Finding of the prostate-specific membrane antigen (PSMA) is highly expressed in prostate cancer (PC) cells that have made it possible to evaluate the patients with PC with a single imaging method. 68 Ga-PSMA PET/CT is now part of the routine in patients with PC. After several years of clinical experience with PSMA tracers, the specificity is satisfactory; however, concerns about the specificity are raising day by day due to the newly laid out nonprostatic malignant and benign lesions with high PSMA expression. Herein, we present an incidental 68 Ga-PSMA uptake in an intramuscular granular cell tumor.
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Affiliation(s)
- Muge N Engin
- From the Department of Nuclear Medicine, Beyhekim Training and Research Hospital, Konya, Turkey
| | - Adil Boz
- Department of Nuclear, Medicine Akdeniz University, Antalya, Turkey
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3
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Chen J, Bui P, Bui C, Mansberg R. Incidental Prostate-Specific Membrane Antigen-Avid Vestibular Schwannoma Detected on 68 Ga-Prostate-Specific Membrane Antigen PET/CT. Clin Nucl Med 2024; 49:234-236. [PMID: 38271251 DOI: 10.1097/rlu.0000000000005028] [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: 01/27/2024]
Abstract
ABSTRACT A 62-year-old man was referred for a 68 Ga-prostate-specific membrane antigen (PSMA) PET/CT scan for newly diagnosed prostate cancer (ISUP grade 5), on the background of left vestibular schwannoma treated with surgical excision 25 years ago. PSMA PET study confirmed the presence of PSMA-avid malignancy in the left prostate lobe with no evidence of PSMA-avid nodal or distant metastasis. An incidental PSMA-avid focus (SUV max , 4.3) was identified in the region of the left cerebellopontine angle, which corresponded to a homogeneous enhancing lesion centered at the left internal acoustic canal and left cerebellopontine angle on MRI. The combined PSMA PET findings and MRI characteristics were consistent with recurrent vestibular schwannoma.
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Affiliation(s)
- Jeffrey Chen
- From the Department of Nuclear Medicine and PET, Nepean Hospital
| | - Paul Bui
- From the Department of Nuclear Medicine and PET, Nepean Hospital
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Voter AF, Werner RA, Savas H, Gafita A, Ross AE, Gorin MA, Solnes LB, Pomper MG, Rowe SP, Sheikhbahaei S. A Practical Guide to the Pearls and Pitfalls of PSMA PET Imaging. Semin Nucl Med 2024; 54:119-131. [PMID: 37980186 DOI: 10.1053/j.semnuclmed.2023.11.001] [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: 09/10/2023] [Revised: 10/30/2023] [Accepted: 11/01/2023] [Indexed: 11/20/2023]
Abstract
Prostate-specific membrane antigen (PSMA)-targeted PET agents have revolutionized the care of patients with prostate cancer, supplanting traditional methods of imaging prostate cancer, and improving the selection and delivery of therapies. This has led to a rapid expansion in both the number of PSMA PET scans performed and the imaging specialists required to interpret those scans. To aid those imagers and clinicians who are new to the interpretation of PSMA PET, this review provides an overview of the interpretation of PSMA PET/CT imaging and pearls for overcoming commonly encountered pitfalls. We discuss the physiologic distribution of the clinically available PSMA-targeted radiotracers, the commonly encountered patterns of prostate cancer spread, as well as the benign and malignant mimics of prostate cancer. Additionally, we review the standardized PSMA PET reporting systems and the role of PSMA in selecting appropriate patients for PSMA-targeted therapies.
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Affiliation(s)
- Andrew F Voter
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Rudolf A Werner
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Hatice Savas
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Andrei Gafita
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Ashley E Ross
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Michael A Gorin
- Milton and Carroll Petrie Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Lilja B Solnes
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Martin G Pomper
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Steven P Rowe
- Department of Radiology, University of North Carolina, Chapel Hill, NC.
| | - Sara Sheikhbahaei
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD
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5
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van Lith SAM, Pruis IJ, Tolboom N, Snijders TJ, Henssen D, Ter Laan M, Te Dorsthorst M, Leenders WPJ, Gotthardt M, Nagarajah J, Robe PA, De Witt Hamer P, Hendrikse H, Oprea-Lager DE, Yaqub M, Boellaard R, Wesseling P, Balvers RK, Verburg FA, Harteveld AA, Smits M, van den Bent M, van Zanten SEMV, van de Giessen E. PET Imaging and Protein Expression of Prostate-Specific Membrane Antigen in Glioblastoma: A Multicenter Inventory Study. J Nucl Med 2023; 64:1526-1531. [PMID: 37652540 DOI: 10.2967/jnumed.123.265738] [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: 03/16/2023] [Revised: 05/31/2023] [Indexed: 09/02/2023] Open
Abstract
Upregulation of prostate-specific membrane antigen (PSMA) in neovasculature has been described in glioblastoma multiforme (GBM), whereas vasculature in nonaffected brain shows hardly any expression of PSMA. It is unclear whether PSMA-targeting tracer uptake on PET is based on PSMA-specific binding to neovasculature or aspecific uptake in tumor. Here, we quantified uptake of various PSMA-targeting tracers in GBM and correlated this with PSMA expression in tumor biopsy samples from the same patients. Methods: Fourteen patients diagnosed with de novo (n = 8) or recurrent (n = 6) GBM underwent a preoperative PET scan after injection of 1.5 MBq/kg [68Ga]Ga-PSMA-11 (n = 7), 200 MBq of [18F]DCFpyl (n = 3), or 200 MBq of [18F]PSMA-1007 (n = 4). Uptake in tumor and tumor-to-background ratios, with contralateral nonaffected brain as background, were determined. In a subset of patients, PSMA expression levels from different regions in the tumor tissue samples (n = 40), determined using immunohistochemistry (n = 35) or RNA sequencing (n = 13), were correlated with tracer uptake on PET. Results: Moderate to high (SUVmax, 1.3-20.0) heterogeneous uptake was found in all tumors irrespective of the tracer type used. Uptake in nonaffected brain was low, resulting in high tumor-to-background ratios (6.1-359.0) calculated by dividing SUVmax of tumor by SUVmax of background. Immunohistochemistry showed variable PSMA expression on endothelial cells of tumor microvasculature, as well as on dispersed individual cells (of unknown origin), and granular staining of the neuropil. No correlation was found between in vivo uptake and PSMA expression levels (for immunohistochemistry, r = -0.173, P = 0.320; for RNA, r = -0.033, P = 0.915). Conclusion: Our results indicate the potential use of various PSMA-targeting tracers in GBM. However, we found no correlation between PSMA expression levels on immunohistochemistry and uptake intensity on PET. Whether this may be explained by methodologic reasons, such as the inability to measure functionally active PSMA with immunohistochemistry, tracer pharmacokinetics, or the contribution of a disturbed blood-brain barrier to tracer retention, should still be investigated.
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Affiliation(s)
- Sanne A M van Lith
- Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ilanah J Pruis
- Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Nelleke Tolboom
- Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Tom J Snijders
- Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Dylan Henssen
- Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mark Ter Laan
- Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - William P J Leenders
- Biochemistry, Radboud University Medical Center, Nijmegen, The Netherlands
- Predica Diagnostics, Nijmegen, The Netherlands
| | - Martin Gotthardt
- Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands
| | - James Nagarajah
- Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Pierre A Robe
- Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Harry Hendrikse
- Radiology and Nuclear Medicine, Amsterdam UMC, VUmc, Amsterdam, The Netherlands
| | | | - Maqsood Yaqub
- Radiology and Nuclear Medicine, Amsterdam UMC, VUmc, Amsterdam, The Netherlands
| | - Ronald Boellaard
- Radiology and Nuclear Medicine, Amsterdam UMC, VUmc, Amsterdam, The Netherlands
| | - Pieter Wesseling
- Pathology, Amsterdam UMC, VUmc, Amsterdam, The Netherlands
- Pathology, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | | | | | - Anita A Harteveld
- Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Marion Smits
- Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
- Medical Delta, Delft, The Netherlands; and
| | - Martin van den Bent
- Brain Tumor Center at Erasmus MC Cancer Institute, Erasmus MC, Rotterdam, The Netherlands
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Moreau A, Khayi F, Maureille A, Bonneville-Levard A, Larrouquere L, Ducray F, Kryza D. Discriminating Inflammatory Radiation-Related Changes From Early Recurrence in Patients With Glioblastomas: A Preliminary Analysis of 68Ga-PSMA-11 PET/CT Compared With 18F-FDOPA PET/CT. Clin Nucl Med 2023; Publish Ahead of Print:00003072-990000000-00584. [PMID: 37276534 DOI: 10.1097/rlu.0000000000004716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
PURPOSE OF THE REPORT Using morphological and functional imaging to discriminate recurrence from postradiation-related modifications in patients with glioblastomas remains challenging. This pilot study aimed to assess the feasibility of using 68Ga-prostate-specific membrane antigen (PSMA) 11 PET/CT compared with 18F-FDOPA PET/CT to detect early recurrence. METHODS Nine patients followed up for glioblastomas who received MRI during 12 months of follow-up were referred for both 68Ga-PSMA-11 and 18F-FDOPA PET/CT. The SUVmax, lesion-to-striatum ratio, lesion-to-normal parenchyma ratio, and lesion-to-salivary gland ratio were calculated. RESULTS Good correlation between 18F-FDOPA and 68Ga-PSMA PET/CT findings was seen in 5 patients. In 4 patients, the findings of both examinations were consistent with recurrence but were better visualized with the PSMA PET/CT. Examinations of the fifth patient were suggestive of postradiation-related changes and were better analyzed with the PSMA PET/CT, which displayed relatively low uptake compared with DOPA PET/CT. Conversely, 4 patients showed conflicting results: recurrence was not detected on the PSMA PET/CT because of previously introduced bevacizumab treatment; in another patient, both examinations were consistent with recurrence, but there was an uptake mismatch at the suspected lesion sites, and 2 patients presented with inconsistent findings. CONCLUSIONS Despite a few discrepancies, this study highlights the potential role of 68Ga-PSMA-11 PET/CT for discriminating postradiation inflammation from recurrence. 68Ga-PSMA-11 PET/CT has an excellent lesion-to-background ratio, and false-positive and false-negative results could be minimized through implementing certain protocols before performing the examination. More powerful prospective studies are required to validate our results.
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Yuile A, Lee A, Moon EA, Hudson A, Kastelan M, Miller S, Chan D, Wei J, Back MF, Wheeler HR. PSMA Expression Correlates with Improved Overall Survival and VEGF Expression in Glioblastoma. Biomedicines 2023; 11:biomedicines11041148. [PMID: 37189766 DOI: 10.3390/biomedicines11041148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/04/2023] [Accepted: 04/07/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND Glioblastomas are the most common and fatal primary brain malignancy in adults. There is a growing interest in identifying the molecular mechanisms of these tumors to develop novel treatments. Glioblastoma neo-angiogenesis is driven by VEGF, and another potential molecule linked to angiogenesis is PSMA. Our study suggests the potential for an association between PSMA and VEGF expression in glioblastoma neo-vasculature. METHODS Archived IDH1/2 wild-type glioblastomas were accessed; demographic and clinical outcomes were recorded. PSMA and VEGF expression by IHC were examined. Patients were dichotomized into PSMA expression high (3+) and low (0-2+) groups. The association between PSMA and VEGF expression was evaluated using Chi2 analysis. OS in PSMA high and low expression groups were compared using multi-linear regression. RESULTS In total, 247 patients with IDH1/2 wild-type glioblastoma with archival tumor samples (between 2009-2014) were examined. PSMA expression correlated positively with VEGF expression (p = 0.01). We detected a significant difference in median OS between PSMA vascular endothelial expression high and low groups-16.1 and 10.8 months, respectively (p = 0.02). CONCLUSION We found a potential positive correlation between PSMA and VEGF expression. Secondly, we showed a potential positive correlation between PSMA expression and overall survival.
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Affiliation(s)
- Alexander Yuile
- Department of Medical Oncology, Royal North Shore Hospital, Reserve Road, St Leonards, NSW 2065, Australia
- Faculty of Medicine and Health Sciences, Northern Clinical School, The University of Sydney, Sydney, NSW 2000, Australia
- The Brain Cancer Group, North Shore Private Hospital, Westbourne Street, St Leonards, NSW 2065, Australia
| | - Adrian Lee
- Department of Medical Oncology, Royal North Shore Hospital, Reserve Road, St Leonards, NSW 2065, Australia
- Faculty of Medicine and Health Sciences, Northern Clinical School, The University of Sydney, Sydney, NSW 2000, Australia
- The Brain Cancer Group, North Shore Private Hospital, Westbourne Street, St Leonards, NSW 2065, Australia
| | - Elizabeth A Moon
- Faculty of Medicine and Health Sciences, Northern Clinical School, The University of Sydney, Sydney, NSW 2000, Australia
| | - Amanda Hudson
- Faculty of Medicine and Health Sciences, Northern Clinical School, The University of Sydney, Sydney, NSW 2000, Australia
| | - Marina Kastelan
- The Brain Cancer Group, North Shore Private Hospital, Westbourne Street, St Leonards, NSW 2065, Australia
| | - Samuel Miller
- Department of Medical Oncology, Royal North Shore Hospital, Reserve Road, St Leonards, NSW 2065, Australia
| | - David Chan
- Department of Medical Oncology, Royal North Shore Hospital, Reserve Road, St Leonards, NSW 2065, Australia
- Faculty of Medicine and Health Sciences, Northern Clinical School, The University of Sydney, Sydney, NSW 2000, Australia
| | - Joe Wei
- Department of Medical Oncology, Royal North Shore Hospital, Reserve Road, St Leonards, NSW 2065, Australia
- Faculty of Medicine and Health Sciences, Northern Clinical School, The University of Sydney, Sydney, NSW 2000, Australia
| | - Michael F Back
- Faculty of Medicine and Health Sciences, Northern Clinical School, The University of Sydney, Sydney, NSW 2000, Australia
- The Brain Cancer Group, North Shore Private Hospital, Westbourne Street, St Leonards, NSW 2065, Australia
- Department of Radiation Oncology, Royal North Shore Hospital, Reserve Road, St Leonards, NSW 2065, Australia
| | - Helen R Wheeler
- Department of Medical Oncology, Royal North Shore Hospital, Reserve Road, St Leonards, NSW 2065, Australia
- Faculty of Medicine and Health Sciences, Northern Clinical School, The University of Sydney, Sydney, NSW 2000, Australia
- The Brain Cancer Group, North Shore Private Hospital, Westbourne Street, St Leonards, NSW 2065, Australia
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