Clinical trial · Interventional
The Value of GRPR PET Imaging for Diagnosis and Staging in Prostate Cancer
The Value of Gastrin-Releasing Peptide Receptor (GRPR) PET Imaging for Diagnosis and Staging in Prostate Cancer
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
The gastrin-releasing peptide receptor (GRPR) is highly expressed in prostate cancer (77%-100%). Numerous studies have confirmed that GRPR PET imaging has emerged as a significant molecular imaging modality in prostate cancer, particularly serving as a complementary tool to PSMA PET for addressing cases with negative or insufficient PSMA expression. It demonstrates substantial value in initial staging (especially in intermediate- and high-risk patients), detecting sites of biochemical recurrence, assessing metastatic lesions (notably in mCRPC), and guiding treatment decisions. 68Ga-G21 and 68Ga-G23 are two novel molecular probes targeting GRPR. This study aims to evaluate their biodistribution and diagnostic performance in prostate cancer and compare them with 68Ga-PSMA-11 PET imaging.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Prostate Cancer (Adenocarcinoma) | Malignant Prostate Neoplasm | CURATED_EXACT | 0.85 |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| 68Ga-G21 | Drug | — | UNRESOLVED |
| 68Ga-G23 | Drug | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- 68Ga-G21 PET imaging
- description
- Intravenous injection of one dosage of 111-148 MBq (3-4 mCi) 68Ga-G21. Tracer of 68Ga-G21 will be used to image lesions of prostate cancer by PET imaging.
- interventionNames
- Drug: 68Ga-G21
- type
- EXPERIMENTAL
- label
- 68Ga-G23 PET imaging
- description
- Intravenous injection of one dosage of 111-148 MBq (3-4 mCi) 68Ga-G23. Tracer of 68Ga-G23 will be used to image lesions of prostate cancer by PET imaging.
- interventionNames
- Drug: 68Ga-G23
Primary outcomes (2)
- measure
- Number of participants with Imaging Emergent Adverse Events
Eligibility
Eligibility (as posted)
- Sex
- Male
- Minimum age
- 18 Years
- Maximum age
- 90 Years
Show eligibility criteria text
Inclusion Criteria: * confirmed treated or untreated prostate cancer patients; * signed written consent. Exclusion Criteria: * known allergy against PSMA; * any medical condition that in the opinion of the investigator may significantly interfere with study compliance.
References
Publications (0)
Data not yet available