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Study identifier: NCT05888532 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

64Cu-GRIP B in Patients With Advanced Malignancies

Condition: Prostate Cancer · Renal Cancer · Urethral Cancer  ·  Sponsor: Rahul Aggarwal

PhasePhase 1/Phase 2
Planned participants91
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This phase I/II clinical trial evaluates if using a radiotracer targeting granzyme B, 64-copper granzyme targeting restricted interaction peptide specific to family member B (64 Cu-GRIP B) with positron emission tomography (PET) imaging can be safe and useful for detecting granzyme B (GrB) in patients with advanced cancers that has spread to nearby tissue or lymph nodes (advanced). Granzyme B (GrB) is a biomarker produced by immune cells in response to immunotherapy, which may highlight tumors that are more likely to respond to treatment. The study population is focused on genitourinary (GU) malignancies, including renal cell and urothelial cancer, two tumor types with high mutational burden and tumor infiltrating lymphocytes compared to other tumor types, and have a predictable response rate at the population level to immune checkpoint inhibitors. The information gained from this trial may allow researchers to develop future trials where 64Cu-GRIP B PET may serve as a biomarker to monitor early response to immunomodulatory therapies which are used to stimulate or suppress the immune system and may help the body fight cancer.

This description comes directly from the study's public registry record.

Talk to the study team

Jessie Huang  ·  877-827-3222  ·  jessie.huang2@ucsf.edu

Always discuss trial participation with your own doctor first.

Locations (1)

University of California, San FranciscoSan Francisco, California, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT05888532