NCT04277338

Molecular Imaging of HER2 Expression in Breast Cancer Using 99mTc-HE3-G3

SPECT Imaging of Human Epidermal Growth Factor Receptor 2 (HER2) Expression in Breast Cancer Using Technetium-99m-labelled Designed Ankyrin Repeat Proteins HE3-G3 (99mTc-HE3-G3)

• Status: Completed
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 30 (actual)
• Sponsor: Tomsk National Research Medical Center of the Russian Academy of Sciences · Academic / Other
• Sex: Female
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

The study should evaluate distribution of 99mTc-HE3-G3 in patients with primary HER2-positive and HER2-negative breast cancer. The primary objective are: 1. To assess distribution of 99mTc-HE3-G3 in normal tissues and in tumours over time; 2. To evaluate dosimetry of 99mTc-HE3-G3; 3. To obtain initial information concerning safety and tolerability of 99mTc-HE3-G3 after single intravenous injection: The secondary objective are: 1.To compare the tumour imaging data with the concerning HER2 expression obtained by immunohistochemistry (IHC) or fluorescent in situ hybridisation (FISH) analysis of biopsy samples.

Detailed description

Overall goal of the project: To determine HER2 expression level in primary breast cancer and possibly in axillary lymph node metastases before neoadjuvant trastuzumab therapy. Phase I. Distribution of 99mTc-HE3-G3 in patients with primary breast cancer. The study should evaluate distribution of 99mTc-HE3-G3 in patients with primary HER2-positive and HER2-negative breast cancer. The primary objective are: 1. To assess distribution of 99mTc-HE3-G3 in normal tissues and in tumours over time; 2. To evaluate dosimetry of 99mTc-HE3-G3; 3. To obtain initial information concerning safety and tolerability of 99mTc-HE3-G3 after single intravenous injection: The secondary objective are: 1\. To compare the tumour imaging data with the concerning HER2 expression obtained by immunohistochemistry (IHC) or fluorescent in situ hybridisation (FISH) analysis of biopsy samples: Methodology: Open-label, exploratory, single centre study. The subjects will receive a single injection of the labelled tracer.

Conditions

• Primary Breast Cancer

Interventions

Type	Name	Description
DRUG	SPECT	One single injection of 99mTc-HE3-G3, followed by gamma camera imaging directly postinjection and after 2, 4, 6 and 24 hours.

Timeline

• Start date: 2020-02-10
• Primary completion: 2021-02-10
• Completion: 2021-10-04
• First posted: 2020-02-20
• Last updated: 2021-10-06

Locations

1 site across 1 country: Russia