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Clinical Trial Summary

This phase I trial tests the safety of [89Zr]DFO-YS5 positron emission tomography (PET) imaging and how well it works to detect CD46 positive cancer cells in patients with multiple myeloma. [89Zr]DFO-YS5 is an imaging agent called a radiopharmaceutical tracer. A radiopharmaceutical tracer uses a small amount of radioactive material that is injected into a vein to help image different areas of the body. [89Zr]DFO-YS5 targets a specialized protein called CD46, which is in certain multiple myeloma cancer cells, and [89Zr]DFO-YS5 PET scans may improve detection of multiple myeloma.


Clinical Trial Description

PRIMARY OBJECTIVE: I. To determine the sensitivity of metastatic lesion detection in multiple myeloma using zirconium Zr 89-DFO-YS5 ([89Zr]DFO-YS5 PET, as compared with fludeoxyglucose F-18 (18F-FDG) PET imaging. SECONDARY OBJECTIVES: I. To determine the safety of [89Zr]DFO-YS5. II. To determine the average organ uptake of [89Zr]DFO-YS5. III. To descriptively report the patterns of intra-tumoral uptake of [89Zr]DFO-YS5 on whole body PET, including by site of disease, uptake by tumor type, inter-tumoral and inter-patient heterogeneity, and tumor-to-background signal. IV. To calculate the dosimetry of [89Zr]DFO-YS5 in patients with multiple myeloma. EXPLORATORY OBJECTIVE: I. To determine the association between uptake (standardized uptake value maximum [SUVmax]) of [89Zr]DFO-YS5 with 1q amplification by fluorescence in situ hybridization (FISH) on tumor biopsies (when available; FISH may be conducted as part of routine, standard-of-care). OUTLINE: Participants are assigned to 1 of 2 cohorts based on participant preference. COHORT A: Participants receive [89Zr]DFO-YS5 intravenously (IV) and undergo a single PET/CT or PET/MRI scan 5-7 days post-injection. Participants also receive fludeoxyglucose F-18 IV and undergo PET/CT or PET/MRI scan within 28 days prior to day 1. COHORT B: Participants receive [89Zr]DFO-YS5 IV and undergo four PET/CT or PET/MRI scans on days 1, 2, 3-4, and 5-7 post-injection. Participants also receive fludeoxyglucose F-18 IV and undergo PET/CT or PET/MRI scan within 28 days prior to day 1. Patients are followed up at 30 days after final scan. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05892393
Study type Interventional
Source University of California, San Francisco
Contact Maya Aslam
Phone (415) 514-8987
Email Maya.Aslam@ucsf.edu
Status Recruiting
Phase Phase 1
Start date June 16, 2023
Completion date September 1, 2026

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