Using 68Ga-PSMA-33 for imaging prostate cancer

Clinical Study on 68Ga-PSMA-33 for PET/CT Imaging of Prostate Cancer

Not applicable Interventional Nanjing First Hospital, Nanjing Medical University · NCT06054789

This study is testing a new imaging agent called 68Ga-PSMA-33 to see if it can safely and effectively help find prostate cancer earlier than current methods.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment8 (estimated)
Ages18 Years to 99 Years
SexMale
SponsorNanjing First Hospital, Nanjing Medical University Academic / other
Locations1 site (Nanjing, Jiangsu)
Trial IDNCT06054789 on ClinicalTrials.gov

What this trial studies

This study investigates the safety and effectiveness of 68Ga-PSMA-33 for the early diagnosis of prostate cancer. It aims to determine the pharmacokinetics, dosimetry, tolerance, and tumor detection rate of this new PSMA-targeted probe. Eight volunteers with prostate cancer will receive an intravenous injection of 68Ga-PSMA-33 and undergo PET/CT imaging at various time intervals. The results will be compared with those from patients receiving another imaging agent, 68Ga-PSMA-617.

Who should consider this trial

Good fit: Ideal candidates are males aged 18 and older with confirmed localized or metastatic prostate cancer.

Not a fit: Patients under 18 years old or those who have received prior radioisotope diagnosis or treatment may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could enhance the early detection and diagnosis of prostate cancer, leading to better treatment outcomes.

How similar studies have performed: Other studies have shown promise with PSMA-targeted imaging agents, indicating potential for success with this novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male sex
* Age 18 years or older
* Patients must have histologically or cytologically confirmed localized or metastatic prostate cancer
* Creatinine less than or equal to 1.5 X upper limit of normal
* ECOG performance status 0 - 2, inclusive
* Able to tolerate the physical/logistical requirements of a PET/CT scan including lying supine (or prone) for up to 30 minutes and tolerating intravenous cannulation Patient with complete clinical data.
* The effects of 68Ga-PSMA-33 on the developing human fetus at the recommended therapeutic dose are unknown. For this reason, men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation.
* Able to understand and provide written informed consent

Exclusion Criteria:

* Patient age \< 18 years
* Received radioisotope diagnosis or treatment before enrollment, and the time window did not exceed 10 physical half-lives
* Malignancy other than current disease under study
* Patient simultaneously participating in another clinical trial
* Patient who cannot stay on PET/CT
* Patient with HIV, HCV, HVB infection or other serious chronic infection
* Patient with liver and kidney function (GFR less than 50 ml/min) disease
* Cannot receive furosemide, allergy to sulfa or sulfa-containing medications
* Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements

Where this trial is running

Nanjing, Jiangsu

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Prostate CancerProstate-Specific Membrane AntigenPET/CTProstate cancer
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.