Using 68Gallium PSMA-PET/CT scans to detect cancer in bladder and skin cancer patients

Pilot Study of 68Gallium PSMA-PET/CT in Patients With Metastatic Urothelial Carcinoma or Melanoma

Phase 1 Interventional Memorial Sloan Kettering Cancer Center · NCT05562791

This study is testing if a new type of scan can better find cancer spread in patients with bladder or skin cancer compared to the usual scan they currently use.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment20 (estimated)
Ages18 Years and up
SexAll
SponsorMemorial Sloan Kettering Cancer Center Academic / other
Locations7 sites (Basking Ridge, New Jersey and 6 other locations)
Trial IDNCT05562791 on ClinicalTrials.gov

What this trial studies

This study aims to evaluate the effectiveness of 68Gallium PSMA-PET/CT scans in detecting metastatic sites in patients with bladder cancer or skin cancer. Researchers will compare the performance of these scans against the conventional FDG-PET/CT scans typically used for imaging these cancers. The study will include patients with confirmed metastatic urothelial carcinoma or melanoma who meet specific eligibility criteria. Participants will undergo imaging to assess the accuracy of the new scanning method.

Who should consider this trial

Good fit: Ideal candidates include adults with confirmed metastatic bladder cancer or melanoma who have assessable lesions suspicious for metastasis.

Not a fit: Patients with non-metastatic cancer or those unable to undergo imaging due to health constraints may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved detection of metastatic cancer sites, enhancing treatment planning for patients.

How similar studies have performed: Other studies have shown promising results with similar imaging techniques, suggesting potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria for Urothelial Carcinoma Cohort:

* Patients with histologically confirmed metastatic urothelial carcinoma with extrapelvic nodal and/or visceral sites of disease (including lung, liver, bone, or soft tissue)
* At least 1 lesion assessable by FDG PET/CT according to RECIST and PERCIST guidelines where applicable, that are determined suspicious for metastasis by an MSKCC attending radiologist or nuclear medicine physician.
* Karnofsky performance status ≥50% (or ECOG/WHO ≤2)
* Participant is ≥18 years of age
* Patient must be able to understand and is willing to sign a written informed consent document

Inclusion Criteria for Melanoma Cohort:

* Patients with histologically confirmed metastatic melanoma
* At least 1 metastatic lesion assessable by CT or FDG PET/CT according to RECIST that is determined to be suspicious for metastasis by an MSKCC attending radiologist or nuclear medicine physician
* ECOG \<= 2
* Participant is \>= 18 years of age
* Patient must be able to understand and is willing to sign a written informed consent document

Exclusion Criteria for Urothelial Carcinoma Cohort:

* Patients with pelvic node-only metastatic disease. If the patient has lymph node only disease, at least one PET-assessable node must be located outside of the pelvis
* Patients with bone only disease
* Unable to lie flat, still, or to tolerate a PET scan
* Patient undergoing active treatment for non-urothelial malignancy, other than skin basal cell or cutaneous superficial squamous cell carcinoma that has not metastasized.
* Patients on a therapeutic clinical trial where PSMA imaging would interfere with the conduct of the trial
* Patients undergoing active surveillance with a known history of non-urothelial malignancies
* Women who are pregnant. All women of childbearing potential must have a documented negative pregnancy test.

Exclusion Criteria for Melanoma Cohort:

* Unable to lie flat, still, or tolerate PET scan.
* Patient is on another therapeutic trial where PSMA imaging would interfere with the conduct of the trial.
* Women who are pregnant. All women of childbearing potential must have a documented negative pregnancy test.

Where this trial is running

Basking Ridge, New Jersey and 6 other locations

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 Bladder CancerMetastaticUrothelial carcinoma68GalliumPSMA-PET/CT22-157
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.