PSMA in Gastrointestinal Tumors (GIPSMA, Focusing on Neuroendocrine Neoplasms)

Study Purpose

The theranostic principle is based on the use of radiolabeled compounds which can be applied for diagnostic molecular imaging and targeted delivery of radiation to the tumor. Gastrointestinal tumors (GIT), including gastroenteropancreatic neuroendocrine neoplasms (GEP-NEN) also express a phenotypic biomarker called prostate-specific membrane antigen (PSMA), thereby rendering it a potential diagnostic (through positron emission tomography (PET) scan imaging) and therapeutic target for radioligand therapy. Aim is to evaluate whether PSMA-directed in-vivo imaging can be also applied to GEP-NEN patients to determine if i) biopsy-derived tissue of newly diagnosed patients exhibit a PSMA expression profile, ii) PSMA-PET shows upregulated PSMA expression in-vivo, iii) such a molecular imaging approach identifies more disease sites relative to conventional imaging, and iv) if the PSMA PET signal predicts further clinical course and outcome under guideline-compatible treatment.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

No
Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.


An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.


Searching Both is inclusive of interventional and observational studies.

Interventional
Eligible Ages 18 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Patients with newly diagnosed GEP-NEN prior to initiation of guideline-compatible, anti-tumor therapy.
  • - Available tissue specimen to conduct PSMA expression profiling.
  • - Male/female, above 18 years old.
  • - Patients must provide written informed consent.
  • - Patients must be willing to comply with study procedures and available for follow-up examinations.

Exclusion Criteria:

  • - Curative setting.
  • - Not sufficient tumor tissue available.
  • - Male Patients: No prostate carcinoma.
  • - Other malignant neoplasms in patient's history.
  • - Pregnancy or Breastfeeding.
- Contraindications for PET/CT

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.

NCT05547919
Phase

Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

N/A
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Wuerzburg University Hospital
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

N/A
Principal Investigator Affiliation N/A
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Other
Overall Status Recruiting
Countries Germany
Conditions

The disease, disorder, syndrome, illness, or injury that is being studied.

Gastrointestinal Cancer
Arms & Interventions

Arms

Experimental: Gastrointestinal tumors histologically positive for PSMA

Tumor biopsy at baseline to establish diagnosis and to identify PSMA expression in an ex-vivo setting. Patients with ex-vivo PSMA expression receive a multimodal imaging approach: This includes a PSMA-targeted PET/CT (18F-PSMA) at baseline and conventional imaging.

Interventions

Radiation: - 18F-PSMA PET/CT

Patients with metastasized gastrointestinal tumors, that exhibit histological PSMA expression, receive an additional 18F-PSMA PET/CT to routine imaging.

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

International Sites

University Hospital Wuerzburg, Wuerzburg, Bavaria, Germany

Status

Recruiting

Address

University Hospital Wuerzburg

Wuerzburg, Bavaria, 97080

Site Contact

Alexander M Weich, MD

[email protected]

+4993120140201

Stay Informed & Connected