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

Primary Breast Cancer Clinical Trial

— HE3-G3  

Official title:

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)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04277338
• Other study ID #: Molecular imaging of HER2
• Status: Completed
• Phase: Phase 1
• Start date: February 10, 2020
• Est. completion date: October 4, 2021

Study information

• Verified date: October 2021
• Source: Tomsk National Research Medical Center of the Russian Academy of Sciences
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 30
• Est. completion date: October 4, 2021
• Est. primary completion date: February 10, 2021
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 18 Years to 80 Years

Eligibility

Inclusion Criteria:

1. Subject is > 18 years of age

2. Diagnosis of primary breast cancer with possible lymph node metastases

3. Availability of results from HER2 status previously determined on material from the primary tumor, either

1. HER2-positive, defined as a immunohistochemical test score of 3+ or FISH positive or

2. HER2-negative, defined as a immunohistochemical test score of 0 or 1+; or else if 2+ then FISH negative

4. Volumetrically quantifiable tumour lesions on CT or MRI, with at least one lesion > 1.0 cm in greatest diameter outside of the liver and kidneys

5. Hematological, liver and renal function test results within the following limits:

• White blood cell count: > 2.0 x 10^9/L

• Haemoglobin: > 80 g/L

• Platelets: > 50.0 x 10^9/L

• Bilirubin =< 2.0 times Upper Limit of Normal

• Serum creatinine: Within Normal Limits

6. A negative pregnancy test (serum beta-human chorionic gonadotropin, beta-HCG) at screening for all patients of childbearing potential. Sexually active women of childbearing potential participating in the study must use a medically acceptable form of contraception for at least 30 days after study termination

7. Subject is capable to undergo the diagnostic investigations to be performed in the study

8. Informed consent

Exclusion Criteria:

1. Second, non-breast malignancy

2. Active current autoimmune disease or history of autoimmune disease

3. Active infection or history of severe infection within the previous 3 months (if clinically relevant at screening)

4. Known HIV positive or chronically active hepatitis B or C

5. Administration of other investigational medicinal product within 30 days of screening

6. Ongoing toxicity > grade 2 from previous standard or investigational therapies, according to US National Cancer Institute's

Related Conditions & MeSH terms

• Breast Neoplasms
• Primary Breast Cancer

Intervention

Drug:
• SPECT
One single injection of 99mTc-HE3-G3, followed by gamma camera imaging directly postinjection and after 2, 4, 6 and 24 hours.

Locations

Country	Name	City	State
Russian Federation	TomskNRMC	Tomsk

Sponsors (3)

Lead Sponsor	Collaborator
Tomsk National Research Medical Center of the Russian Academy of Sciences	Institute of Bioorganic Chemistry, Russian Academy of Sciences, Uppsala University

Country where clinical trial is conducted

Russian Federation, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Gamma camera-based whole-body 99mTc-HE3-G3 uptake value (%)	Whole-body 99mTc-HE3-G3 uptake coinciding with normal organs and tissues will be assessed using gamma camera and calculated as percentage (%) of the injected dose of the radiopharmaceutical	6 hours
Primary	SPECT-based 99mTc-HE3-G3 uptake value in tumor lesions (counts)	99mTc-HE3-G3 uptake coinciding with tumor lesions will be assessed using single-photon emission computed tomography and measured in counts	6 hours
Primary	SPECT-based 99mTc-HE3-G3background uptake value (counts)	Focal uptake of 99mTc-HE3-G3 in the regions without pathological findings will be assessed with SPECT and measured in counts	6 hours
Primary	Tumor-to-background ratio (SPECT)	The SPECT-based tumor-to-background ratio will be calculated as follows: the value of 99mTc-HE3-G3 uptake coinciding with tumor lesions (counts) will be divided by the value of 99mTc-HE3-G3 uptake coinciding with the regions without pathological findings (counts)	6 hours
Secondary	Safety attributable to 99mTc-HE3-G3 injections (physical findings)	The safety attributable to 99mTc-HE3-G3 injections will be evaluated based on the assessments of physical examination, vital signs, and ECG (% of cases with abnormal findings relative to baseline)	24 hours
Secondary	Safety attributable to 99mTc-HE3-G3 injections (laboratory tests)	The safety attributable to 99mTc-HE3-G3 injections will be evaluated based on the blood and urine laboratory tests (% of cases with abnormal findings relative to baseline)	24 hours
Secondary	Safety attributable to 99mTc-HE3-G3 injections (incidence and severity of adverse events)	The safety attributable to 99mTc-HE3-G3 injections will be evaluated based on the rate of adverse events (%)	24 hours
Secondary	Safety attributable to 99mTc-HE3-G3 injections (concomitant medication)	The safety attributable to 99mTc-HE3-G3 injections will be evaluated based on the rate of administration of concomitant medication (%)	24 hours