Molecular Imaging of HER2 Expression in Breast Cancer Using [99mTc]Tc-G3-(G3S)3C Before Chemo/Targeted Therapy

Breast Cancer Female Clinical Trial

Official title:

SPECT Imaging of Human Epidermal Growth Factor Receptor 2 (HER2) Expression in Breast Cancer Using Technetium-99m-labelled Designed Ankyrin Repeat Proteins ([99mTc]Tc-G3-(G3S)3C)

Clinical Trial Details — Status: Enrolling by invitation

Administrative data

• NCT number: NCT05923268
• Other study ID #: [99mTc]Tc-G3-(G3S)3C
• Status: Enrolling by invitation
• Phase: N/A
• Start date: June 4, 2023
• Est. completion date: June 15, 2024

Study information

• Verified date: July 2023
• 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]Tc-G3-(G3S)3C in patients with primary HER2-positive and HER2-negative breast cancer

Description:

Overall goal of the project: To determine HER2 expression level in primary breast cancer before neoadjuvant system therapy (chemotherapy or/and targeted therapy). Phase I. Distribution of [99mTc]Tc-G3-(G3S)3C in patients with primary breast cancer. The study should evaluate distribution of [99mTc]Tc-G3-(G3S)3C in patients with primary HER2-positive and HER2-negative breast cancer.

Recruitment information / eligibility

• Status: Enrolling by invitation
• Enrollment: 10
• Est. completion date: June 15, 2024
• Est. primary completion date: June 15, 2024
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 18 Years to 80 Years

Eligibility

Inclusion Criteria:

1. Subject is > 18 years of age

2. Availability of results from HER2 status previously determined on material from the primary tumor and metastatic LN, either a. HER2-positive, defined as a DAKO HercepTest™ score of 3+ or FISH positive or b. HER2-negative, defined as a DAKO HercepTest™ score of 0 or 1+; or else if 2+ then FISH negative

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

• White blood cell count: > 2.0 x 109/L
• Hemoglobin: > 80 g/L
• Platelets: > 50.0 x 109/L
• ALT, ALP, AST: =< 5.0 times Upper Limit of Normal
• Bilirubin =< 2.0 times Upper Limit of Normal
• Serum creatinine: Within Normal Limits

4. A negative pregnancy test 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

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

6. Informed consent

Exclusion Criteria:

1. Any system therapy (chemo-/targeted therapy)

2. Second, non-breast malignancy

3. Active current autoimmune disease or history of autoimmune disease

4. 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 Cancer Female
• Breast Neoplasms

Intervention

Drug:
• [99mTc]Tc-G3-(G3S)3C
One single injection of [99mTc]Tc-G3-(G3S)3C, followed by gamma camera imaging directly postinjection and after 2, 4, 6 and 24 hours

Locations

Country	Name	City	State
Russian Federation	Olga	Tomsk

Sponsors (1)

Lead Sponsor	Collaborator
Tomsk National Research Medical Center of the Russian Academy of Sciences

Country where clinical trial is conducted

Russian Federation, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Gamma camera-based whole-body [99mTc]Tc-G3-(G3S)3C uptake value (%)	Whole-body [99mTc]Tc-G3-(G3S)3C 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]Tc-G3-(G3S)3C uptake value in tumor lesions (counts) [99mTc]Tc-G3-(G3S)3C uptake coinciding with tumor lesions will be assessed using single-photon emission computed tomography and measured in counts	SPECT-based [99mTc]Tc-G3-(G3S)3C uptake value in tumor lesions (counts) [99mTc]Tc-G3-(G3S)3C uptake coinciding with tumor lesions will be assessed using single-photon emission computed tomography and measured in counts	6 hours
Primary	SPECT-based [99mTc]Tc-G3-(G3S)3C background uptake value (counts)	Focal uptake of [99mTc]Tc-G3-(G3S)3C 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]Tc-G3-(G3S)3C uptake coinciding with tumor lesions (counts) will be divided by the value of [99mTc]Tc-G3-(G3S)3C uptake coinciding with the regions without pathological findings (counts)	6 hours
Secondary	Safety attributable to [99mTc]Tc-G3-(G3S)3C injections (vital signs) (% of cases with abnormal findings relative to baseline)	The safety attributable to [99mTc]Tc-G3-(G3S)3C injections will be evaluated based on the assessments of vital signs (% of cases with abnormal findings relative to baseline)	24 hors
Secondary	Safety attributable to [99mTc]Tc-G3-(G3S)3C injections (physical examination) (% of cases with abnormal findings relative to baseline)	The safety attributable to [99mTc]Tc-G3-(G3S)3C injections will be evaluated based on the assessments of physical examination (% of cases with abnormal findings relative to baseline)	24 hours
Secondary	Safety attributable to [99mTc]Tc-G3-(G3S)3C injections (laboratory tests) (% of cases with abnormal findings relative to baseline)	The safety attributable to [99mTc]Tc-G3-(G3S)3C injections will be evaluated based on the blood and urine laboratory tests (% of cases with abnormal findings relative to baseline)	Time Frame: 24 hours
Secondary	Safety attributable to [99mTc]Tc-G3-(G3S)3C injections (% of incidence and severity of adverse events)	The safety attributable to [99mTc]Tc-G3-(G3S)3C injections will be evaluated based on the rate of adverse events (%)	24 hours
Secondary	Safety attributable to [99mTc]Tc-G3-(G3S)3C injections (ECG ) (% of cases with abnormal findings relative to baseline)	The safety attributable to [99mTc]Tc-G3-(G3S)3C injections will be evaluated based on the assessments of ECG (% of cases with abnormal findings relative to baseline)	24 hours
Secondary	Safety attributable to [99mTc]Tc-G3-(G3S)3C injections (% concomitant medication)	The safety attributable to [99mTc]Tc-G3-(G3S)3C injections will be evaluated based on the rate of administration of concomitant medication (%)	24 hours