Imaging HER2-positive metastatic breast cancer using a new PET agent

Study of 68Ga /131I SGMIB-ZT-199 PET Imaging Targeting HER2-positive in the Diagnosis of Metastatic Breast Cancer

Not applicable Interventional Huashan Hospital · NCT05982626

This study is testing a new imaging agent to see if it can help doctors better identify and treat HER2-positive metastatic breast cancer.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment10 (estimated)
Ages18 Years to 75 Years
SexFemale
SponsorHuashan Hospital Academic / other
Drugs / interventionsradiation
Locations1 site (Shanghai)
Trial IDNCT05982626 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety and effectiveness of a new imaging agent, 68Ga/131I-SGMIB-ZT-199, in patients with HER2-positive metastatic breast cancer. Participants will receive an injection of the agent, and the study will assess its biodistribution, radiation dosimetry, and uptake in tumor lesions. The goal is to improve diagnostic imaging for this specific type of breast cancer, potentially leading to better treatment planning and outcomes.

Who should consider this trial

Good fit: Ideal candidates for this study are women aged 18 to 75 with confirmed HER2-positive metastatic breast cancer.

Not a fit: Patients with severe hepatic or renal insufficiency or those participating in other studies that involve radiation exposure may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the accuracy of diagnosing HER2-positive metastatic breast cancer, leading to more tailored and effective treatment options for patients.

How similar studies have performed: While this approach is innovative, similar studies using targeted imaging agents have shown promise in improving cancer diagnostics.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Breast cancer patients.

  1. Women aged between 18 and 75 years old.
  2. Patients with breast cancer confirmed by histological examination or imaging.
  3. HER2 positive diagnosis confirmed by puncture by immunohistochemistry or fluorescence in situ hybridization (HER2 positive is defined as immunohistochemistry result of 3+ (IHC 3+); or immunohistochemistry result of 2+/positive in situ hybridization result (IHC 2+/ISH+)).
  4. Renal function: serum creatinine less than or equal to the upper limit of the normal range; electrocardiogram: no significant abnormalities.
  5. Patients of childbearing age can cooperate with contraception.
  6. Willing and able to cooperate with all items of this study.

Exclusion Criteria:

* Subjects meeting any of the following criteria will be excluded from the study:

  1. Severe hepatic or renal insufficiency;
  2. Participation in another study protocol or clinical care within the past year that has resulted in radiation exposure exceeding an effective dose of 50 mSv in addition to the radiation exposure expected from participation in this clinical study.
  3. Participation in this study is considered unsuitable by other investigators.
  4. Pregnant women and other groups unsuitable to receive radiation.
  5. Alcohol allergy, etc.

Where this trial is running

Shanghai

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 HER2-positive Breast CancerHer2-positiveMetastatic breast cancerPositron-Emission Tomography
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.