A Study of 68Ga-GRP PET/CT for Imaging in Low and Intermediate Risk Prostate Cancer
NCT ID: NCT05073653
Last Updated: 2021-10-19
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
NA
80 participants
INTERVENTIONAL
2021-10-11
2022-12-31
Brief Summary
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The aim of this study is to investigate the clinical value of 68Ga-GRP positron emission tomography / computed tomography (PET/CT) compared to 68Ga-PSMA PET/CT in patients with low and intermediate risk PCa.
Detailed Description
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Recommended imaging modalities for initial staging include computerized tomography (CT) scan, bone scan, and Magnetic Resonance Imaging (MRI). In addition to initial work-up, Gallium-68 prostate-specific membrane antigen positron emission tomography/computer tomography (68Ga-PSMA PET/CT) is a relatively new nuclear imaging modality, showing high sensitivity and specificity. Recently, several studies have investigated the role of 68Ga-PSMA PET/CT in a first-line diagnostic setting, especially in patients with high-risk and biochemically recurrent PCa.
Therefore, PET imaging with 68Ga-PSMA may participate to optimize work-up in the staging of high-risk patients.
Another family of radiopharmaceuticals aimed to target the Gastrin-Releasing Peptide Receptor (GRP-R) which is overexpressed in early stage PCa. Various radiolabeled GRP analogues have been developed and shown encouraging results as related to the detection of primary PCa in preclinical study. However, 68Ga-GRP failed to detect some bone metastases in hormone-refractory patients. A prospective study identified that GRPR expression is not associated with Gleason score (GS) and PSMA expression, suggesting that 68Ga-GRP and 68Ga-PSMA PET/CT may be complementary in various risks of PCa diagnosis.
The aim of this pilot study is to compare 68Ga-PSMA PET/CT to 68Ga-GRP PET/CT in patients with PCa of low and intermediate risk to better understand how 68Ga-PSMA and 68Ga-GRP PET/CT could performed a primary lesion mapping and how 68Ga-PSMA and 68Ga-GRP PET/CT could be used (or combined) in clinical practice.
Conditions
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Study Design
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NON_RANDOMIZED
SINGLE_GROUP
DIAGNOSTIC
NONE
Study Groups
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68Ga-PSMA PET/CT Imaging
Injection of the radioligand 68Ga-PSMA; Device: PET/CT; Following injection of 68Ga-PSMA, the participants will be subjected to whole body PET/CT.
68Ga-PSMA PET/CT
Exploratory, Single-institution Study, Comparing 68Ga-GRP PET/CT Versus 68Ga-PSMA PET/CT in Patients Diagnosed With Prostate Cancer of Low and Intermediate Risk for Radical Prostatectomy
68Ga-GRP PET/CT Imaging
Injection of the radioligand 68Ga-GRP; Device: PET/CT; Following injection of 68Ga-GRP, the participants will be subjected to whole body PET/CT.
68Ga-GRP PET/CT
Exploratory, Single-institution Study, Comparing 68Ga-GRP PET/CT Versus 68Ga-PSMA PET/CT in Patients Diagnosed With Prostate Cancer of Low and Intermediate Risk for Radical Prostatectomy
Interventions
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68Ga-PSMA PET/CT
Exploratory, Single-institution Study, Comparing 68Ga-GRP PET/CT Versus 68Ga-PSMA PET/CT in Patients Diagnosed With Prostate Cancer of Low and Intermediate Risk for Radical Prostatectomy
68Ga-GRP PET/CT
Exploratory, Single-institution Study, Comparing 68Ga-GRP PET/CT Versus 68Ga-PSMA PET/CT in Patients Diagnosed With Prostate Cancer of Low and Intermediate Risk for Radical Prostatectomy
Eligibility Criteria
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Inclusion Criteria
* Patients with low risk prostate cancer (Gleason score ≤ 6 and cT1-T2a and Prostate Specific Antigen (PSA) value \< 10 ng/mL);
* Patients with intermediate risk prostate cancer (Gleason score 7 or cT2b or PSA value 10-20 ng/mL);
* Patients with high risk prostate cancer (Gleason \> 7 or cT2c or PSA value \> 20 ng/mL);
* Candidate for radical prostatectomy after discussion in multidisciplinary committee;
* Written informed consent willingly obtained.
Exclusion Criteria
* Patient not candidate for radical prostatectomy and/or unable to benefit from surgery;
* Patient under legal protection or unable to express its own consent;
* Patient within exclusion period from another clinical trial;
* Claustrophobia (unable to accept PET/CT scanning).
18 Years
85 Years
MALE
No
Sponsors
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Xiangya Hospital of Central South University
OTHER
Responsible Party
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Principal Investigators
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Shuo Hu, PhD, MD
Role: STUDY_DIRECTOR
Department of PET Center,Xiangya Hospital,Central South University
Locations
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Department of PET Center,Xiangya Hospital,Central South University
Changsha, Hunan, China
Countries
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Central Contacts
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Facility Contacts
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References
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Siegel RL, Miller KD, Fuchs HE, Jemal A. Cancer Statistics, 2021. CA Cancer J Clin. 2021 Jan;71(1):7-33. doi: 10.3322/caac.21654. Epub 2021 Jan 12.
Fenton JJ, Weyrich MS, Durbin S, Liu Y, Bang H, Melnikow J. Prostate-Specific Antigen-Based Screening for Prostate Cancer: Evidence Report and Systematic Review for the US Preventive Services Task Force. JAMA. 2018 May 8;319(18):1914-1931. doi: 10.1001/jama.2018.3712.
Perera M, Papa N, Roberts M, Williams M, Udovicich C, Vela I, Christidis D, Bolton D, Hofman MS, Lawrentschuk N, Murphy DG. Gallium-68 Prostate-specific Membrane Antigen Positron Emission Tomography in Advanced Prostate Cancer-Updated Diagnostic Utility, Sensitivity, Specificity, and Distribution of Prostate-specific Membrane Antigen-avid Lesions: A Systematic Review and Meta-analysis. Eur Urol. 2020 Apr;77(4):403-417. doi: 10.1016/j.eururo.2019.01.049. Epub 2019 Feb 14.
Mansi R, Fleischmann A, Macke HR, Reubi JC. Targeting GRPR in urological cancers--from basic research to clinical application. Nat Rev Urol. 2013 Apr;10(4):235-44. doi: 10.1038/nrurol.2013.42. Epub 2013 Mar 19.
Wieser G, Mansi R, Grosu AL, Schultze-Seemann W, Dumont-Walter RA, Meyer PT, Maecke HR, Reubi JC, Weber WA. Positron emission tomography (PET) imaging of prostate cancer with a gastrin releasing peptide receptor antagonist--from mice to men. Theranostics. 2014 Feb 1;4(4):412-9. doi: 10.7150/thno.7324. eCollection 2014.
Zhang J, Niu G, Fan X, Lang L, Hou G, Chen L, Wu H, Zhu Z, Li F, Chen X. PET Using a GRPR Antagonist 68Ga-RM26 in Healthy Volunteers and Prostate Cancer Patients. J Nucl Med. 2018 Jun;59(6):922-928. doi: 10.2967/jnumed.117.198929. Epub 2017 Nov 9.
Touijer KA, Michaud L, Alvarez HAV, Gopalan A, Kossatz S, Gonen M, Beattie B, Sandler I, Lyaschenko S, Eastham JA, Scardino PT, Hricak H, Weber WA. Prospective Study of the Radiolabeled GRPR Antagonist BAY86-7548 for Positron Emission Tomography/Computed Tomography Imaging of Newly Diagnosed Prostate Cancer. Eur Urol Oncol. 2019 Mar;2(2):166-173. doi: 10.1016/j.euo.2018.08.011. Epub 2018 Sep 22.
Other Identifiers
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202110113
Identifier Type: -
Identifier Source: org_study_id