Clinical trial NCT06736054: A Phase I Trial of 61Cu-NODAGA-PSMA for Patients with Prostate Cancer
Official title: A Phase I Trial of 61Cu-NODAGA-PSMA for Patients with Prostate Cancer
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: PHASE1
Conditions: Prostate Adenocarcinoma
Keywords: PSMA
PET/CT
Phase 1
Lead sponsor: Hoag Memorial Hospital Presbyterian
Sponsor class: OTHER
First posted: 2024-12-16
Enrollment: 8
Sex: MALE
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: DIAGNOSTIC

Brief summary: Molecular Imaging (MI) uses tracers which emit radiation to provide clinically valuable imaging for patient with cancer. Most current MI agents utilize Fluorine 18 or Gallium 68 as the positron emitter for PET imaging. However, these isotopes have short half-lives which limit the geographic distribution range of tracers made with these isotopes. Copper 61 (61Cu) has a 3.3 hour half-life, which would allow for far greater distribution range following radiotracer production.

This phase I trial will test the safety and effectiveness of a novel MI radiotracer that uses 61Cu as its positron emitting isotope and targets Prostate Specific Membrane Antigen (PSMA) for imaging prostate cancer. A successful trial will provide the ability to advance this novel 61Cu-NODAGA-PSMA radioisotope into phase II trials, as well as open a new paradigm into the production of MI radioisotopes with 61Cu.

Detailed description: This is a phase 1, non-randomized study. Subjects will undergo imaging with 100-300 MBq (2.7-8.1 mCi) of 61Cu-NODAGA-PSMA intravenously (IV), followed by PET/CT imaging 60 (+/- 10) minutes post radiotracer administration. This is a diagnostic imaging study. As the imaging agent will not have a treatment effect, efficacy evaluations that are standard in treatment protocols will not be performed. We expect to enroll 6-10 patients in the proposed study. The sample size is exploratory.

For the primary objective of safety, side effects will be monitored the day of and the day following radiotracer administration. As the PET radiotracer used in this trial is given at a low, imaging dose, serious adverse events are not expected. If a single serious adverse event is identified, then the protocol will be held until reviewed by the IRB.

For the secondary objective of dosimetry, dosimetry will be calculated from PET/CT images and radioactive counts in blood samples by an experience medical physicist.

For the secondary objective of effectiveness, the number of suspected PSMA-positive malignant lesions will be calculated in both the standard-of-care 18F-Piflufolastat PET/CT and the experimental 61Cu- PSMA PET/CT. Positive lesions will be considered to be the foci greater than local background that are not physiologic/benign by location. The percentage of patients with any suspected PSMApositive malignant lesions will be determined for each radiotracer.

Eligibility criteria: Inclusion Criteria:

1. Biopsy proven prostate adenocarcinoma
2. Age ≥ 18 years
3. ECOG 0 or 1
4. At least one site of PSMA-positive disease on a PSMA-targeted PET/CT performed within 30 days of trial recruitment
5. Creatinine of ≤1.4 or Creatinine Clearance or ≥ 60 mL/minute.

Exclusion Criteria:

1. Known allergy/hypersensitivity to PSMA-targeted imaging agents
2. Other active malignancy, other than the known prostate cancer

Primary outcomes:
measure: Incidence of Imaging Agent-Emergent Adverse Events [Safety and Tolerability]
timeFrame: Up to 24 hours after administration of radiotracer
Secondary outcomes:
measure: Dosimetry
timeFrame: Up to 24 hours after administration of radiotracer
measure: Number of suspected PSMA-positive malignant lesions
timeFrame: Up to 24 hours after administration of radiotracer
Other outcomes:
Locations:
city: Irvine
country: United States
facility: Hoag Memorial Hospital Presbyterian
state: California
Study officials:
References:
citation: Basaco Bernabeu T, Mansi R, Del Pozzo L, Zanger S, Gaonkar RH, McDougall L, De Rose F, Jaafar-Thiel L, Herz M, Eiber M, Ulaner GA, Weber WA, Fani M. 61Cu-PSMA-Targeted PET for Prostate Cancer: From Radiotracer Development to First-in-Human Imaging. J Nucl Med. 2024 Sep 3;65(9):1427-1434. doi: 10.2967/jnumed.123.267126.