PET Imaging

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.