Examining a new imaging method for gastrointestinal cancers

CLDN18.2 Targeted 68Ga-PMD22 PET Imaging in Patients With Gastrointestinal Tumours

Early Phase 1 Interventional Peking Union Medical College Hospital · NCT05937919

This study is testing a new imaging method using a special tracer to see if it can help doctors better detect stomach and colon cancers in patients.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Enrollment10 (estimated)
AgesN/A to 80 Years
SexAll
SponsorPeking Union Medical College Hospital Academic / other
Locations1 site (Beijing)
Trial IDNCT05937919 on ClinicalTrials.gov

What this trial studies

This study investigates the effectiveness of a novel tracer, 68Ga-PMD22, which targets the CLDN18.2 protein to detect its expression in patients with gastric and colorectal cancers. The tracer is administered via intravenous injection and is designed to improve imaging accuracy for these types of tumors. The study aims to explore the safety and imaging capabilities of this tracer through PET/CT scans in patients who are suspected of having cancer or are scheduled for tumor-related procedures. The research builds on previous findings that highlight the role of CLDN18.2 in tumor biology.

Who should consider this trial

Good fit: Ideal candidates include patients with suspected gastric or colorectal cancer who are planning to undergo biopsy or surgical treatment within the next two months.

Not a fit: Patients with severe liver or kidney dysfunction, claustrophobia, or those who are pregnant or lactating may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the detection and diagnosis of gastrointestinal cancers, leading to better-targeted treatments.

How similar studies have performed: Previous studies have shown promising results with similar imaging approaches targeting CLDN18.2, indicating potential for success in this novel application.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* In the near future (within 2 months), patients who plan to undergo puncture biopsy or undergo tumor surgical treatment or are clinically highly suspected of cancer (including primary and tumor recurrence and metastasis)
* Able to understand and voluntarily sign informed consent forms, with good compliance

Exclusion Criteria:

* Severe abnormalities in liver and kidney function
* Suffering from claustrophobia or other mental illnesses
* Pregnant and lactating women

Where this trial is running

Beijing

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 Gastrointestinal CancerCLDN18.2Gastric CancerColorectal CancerPositron emission tomography
Last reviewed 2026-06-09 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.