PSMA-PET Imaging of Salivary Gland Tumours and Other Rare Cancers

NCT ID: NCT05581979

Last Updated: 2025-07-25

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 4 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2022-01-26
• Study Completion Date: 2023-05-31

Brief Summary

The objectives of this pilot feasibility study, which is on the use of 68-Ga PSMA PET imaging of salivary gland tumours, are

• to determine the proportion of patients with high PSMA-ligand uptake on Ga-68 PSMA imaging in locally advanced, recurrent or metastatic salivary gland cancers and other rare cancer; and
• to determine if in vitro PSMA expression correlates to PSMA-ligand uptake on Ga-68 PSMA imaging in locally advanced, recurrent or metastatic salivary gland cancers and other rare cancers.

The hypotheses of this study are that there is high PSMA-ligand uptake on Ga-68 PSMA imaging in locally advanced, recurrent or metastatic salivary gland cancers and other rare cancers; and that in vitro PSMA expression correlates to PSMA-ligand uptake on Ga-68 PSMA imaging.

Detailed Description

The potential participant will be screened and confirmed for eligibility by the appropriate study-team member. A signed IRB approved informed consent will be obtained prior to conducting any study-related procedures.

On the scheduled visit date for the study,

• An intravenous cannula (plug) will be inserted in a vein in the participant's arm, through which the 68-Ga PSMA radiotracer for the scan will be injected. The infusion will take about 1-2 minutes.
• PET imaging will be performed with a dedicated PET/CT scanner. 2.5-6.0 mCi (depending on weight of the patient) of PSMA radiotracer will be injected intravenously.
• A PET scan will be done around 60 minutes after the injection of the 68-Ga PSMA imaging agent.
• During imaging, the participant will be asked to lie still and may be asked to hold his/her breath for a few seconds.
• Imaging will be performed using a PET/CT, which will take 30 to 40 minutes to complete. Imaging of the body from vertex to mid thigh or feet will be obtained.
• After the completion of the scan, the plug will be removed.

A Final Study Visit will take place on that one scheduled day. The participant will not need to visit the doctor's office during the course of the study outside of their usual scheduled doctor's follow up appointments.

Conditions

Salivary Gland Tumor; Rare Malignant Neoplasm

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Study Groups

68-Ga PSMA PET scan

68-Ga PSMA PET scan

68-Ga PSMA PET scan

Intervention Type: DIAGNOSTIC_TEST

On the scheduled visit date for the study,

• An intravenous cannula (plug) will be inserted in a vein in the participant's arm, through which the 68-Ga PSMA radiotracer for the scan will be injected. The infusion will take about 1-2 minutes.
• PET imaging will be performed with a dedicated PET/CT scanner. 2.5-6.0 mCi (depending on weight of the patient) of PSMA radiotracer will be injected intravenously.

Interventions

68-Ga PSMA PET scan

On the scheduled visit date for the study,

• An intravenous cannula (plug) will be inserted in a vein in the participant's arm, through which the 68-Ga PSMA radiotracer for the scan will be injected. The infusion will take about 1-2 minutes.
• PET imaging will be performed with a dedicated PET/CT scanner. 2.5-6.0 mCi (depending on weight of the patient) of PSMA radiotracer will be injected intravenously.

Intervention Type: DIAGNOSTIC_TEST

Eligibility Criteria

Inclusion Criteria

• Locally advanced, metastatic or locally recurrent salivary gland cancers OR rare cancers (Examples of rare cancers: thyroid ca, cholangio ca, pancreatic ca, gall bladder ca, sarcoma)
• Sample of biopsied tissue available for analysis
• Histologically confirmed diagnoses
• Above 21 years of age
• Able to provide informed consent

• Diagnosis of haematological malignancies
• Patients with more than one cancer diagnosis
• Contraindication to 68Ga-PSMA PET/CT

• E.g.: pregnant patients, breast feeding patients, renal impairment, liver impairment, allergy to components of the test
• Any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow up schedule
• Ongoing participation in any other clinical trial

• Minimum Eligible Age: 21 Years
• Maximum Eligible Age: 99 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

National Cancer Centre, Singapore

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Dr Wen-Long NEI, MD

Role: PRINCIPAL_INVESTIGATOR

National Cancer Centre, Singapore

Locations

National Cancer Centre Singapore

Singapore, , Singapore

Countries

Singapore

Other Identifiers

PSMA 01

Identifier Type: -

Identifier Source: org_study_id