A Study of 68Ga-ABY-025 PET for Non-invasive Quantification of HER2-expression in Advanced Breast Cancer (Affibody-3)
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ClinicalTrials.gov Identifier: NCT03655353 |
Recruitment Status :
Recruiting
First Posted : August 31, 2018
Last Update Posted : September 7, 2018
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Condition or disease | Intervention/treatment | Phase |
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HER2-positive Breast Cancer | Diagnostic Test: ABY-PET | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 120 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Masking Description: | Investigators will determine HER2 expression by ABY-PET without knowledge of the results from the biopsies (in Phase III part). |
Primary Purpose: | Diagnostic |
Official Title: | A Multicenter Phase II/III-study of 68Ga-ABY-025 PET for Non-invasive Quantification of HER2-expression in Advanced Breast Cancer |
Actual Study Start Date : | August 22, 2018 |
Estimated Primary Completion Date : | December 31, 2021 |
Estimated Study Completion Date : | December 31, 2022 |

Arm | Intervention/treatment |
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Experimental: ABY-PET
68Ga-ABY-025 is used as tracer for PET scan
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Diagnostic Test: ABY-PET
Diagnostic PET for HER2 expression |
- HER2- expression by using 68Ga-ABY-025 PET. [ Time Frame: Approximately 10 days after study entry. ]HER2-expression in tumors measured by 68Ga-ABY-025 PET, centrally analysed and result used for location of biopsy.
- HER2-expression by analysing biopsy sample. [ Time Frame: Approximately 21 days after study entry. ]HER2-expression in tumors by histopathology. Location of biopsy site based on HER2 expression seen in ABY-PET.

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Signed written informed consent.
- Age ≥18 years.
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Histologically or cytologically confirmed HER2-positive or borderline positive (for definition see below) adenocarcinoma of the breast.
HER2-positive defined as:
- 3+ by immunohistochemistry [IHC] in >10% of cell areas.
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2+ by IHC in >10% of cell areas and HER2/CEP17 ratio ≥2.0 or HER2 copy number ≥ 6.0 by in situ hybridization [ISH]).
HER2-borderline positive defines as:
- 2+ by IHC and HER2/CEP17 ratio <2.0 and/or HER2 copy number 4.0 - 6.0 by in situ hybridization [ISH]) ("equivocal").
- 2+ by IHC and HER2/CEP17 ratio <2.0 and/or HER2 copy number <4.0 by in situ hybridization [ISH]) ("2+ ISH negative").
- Known inhomogeneous HER2-expression in the primary tumor with HER2-positive areas <10% ("inhomogeneous").
- Primary breast cancer planned for neoadjuvant therapy (Stage II-III, T2-4N0-3) or metastatic (M1; at least 80 pts).
- At least one tumor lesion ≥ 10 mm.
- At least one tumor lesion available for biopsy.
- Newly diagnosed or confirmed progression and planned for therapy with trastuzumab emtansine or anti-HER2 targeted therapy(-ies) concomitant with chemotherapy (HER2-positive cohort) or chemotherapy (HER2-negative patients).
- WHO performance status ≤ 2.
- Predicted survival > 12 weeks.
- Negative pregnancy test in women of childbearing potential (premenopausal or <12 months of amenorrhea post-menopause and who have not undergone surgical sterilization). Women of childbearing potential must use highly effective method of contraception, i.e combined hormonal contraception, or progestogen-only hormonal contraception, or intrauterine device, or intrauterine hormone-releasing system, or bilateral tubal occlusion, or vasectomized partner, or sexual abstinence
Exclusion Criteria:
- Histologically or cytologically confirmed HER2-negative breast cancer defined as IHC 0 or 1+.
- Other manifest malignancy.
- Serious uncontrolled concomitant disease including congestive heart failure that would contraindicate the use of any anti-HER2 therapy.
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Inadequate organ function, suggested by the following laboratory results:
- Absolute neutrophil count <1,500 cells/mm3
- Total bilirubin ≥1.5 x ULN (unless the patient has documented Gilbert's syndrome)
- AST (SGOT) or ALT (SGPT) >5.0 × ULN
- Serum creatinine clearance <30 ml/min
- Patients of childbearing potential and sexually active and not willing to use highly effective contraceptive.
- Assessed by the Investigator to be unable or unwilling to comply with the requirements of the protocol.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03655353
Contact: Lena Franklin, BSc | +46 18 6111761 | lena.franklin@akademiska.se | |
Contact: Tora Sundin | +46 18 6172428 | tora.sundin@akademiska.se |
Sweden | |
Section for Clinical Research & Development Unit | Recruiting |
Uppsala, Sweden, 75185 | |
Contact: Tora Sundin tora.sundin@akademiska.se | |
Contact: Lena Franklin lena.franklin@akademiska.se |
Principal Investigator: | Henrik Lindman | Uppsala University Hospital |
Responsible Party: | Henrik Lindman, Coordinating Investigator, Uppsala University Hospital |
ClinicalTrials.gov Identifier: | NCT03655353 |
Other Study ID Numbers: |
ABY-025-MI301 |
First Posted: | August 31, 2018 Key Record Dates |
Last Update Posted: | September 7, 2018 |
Last Verified: | September 2018 |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Breast Neoplasms Neoplasms by Site Neoplasms Breast Diseases Skin Diseases |