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Cu64-DOTA-trastuzumab PET and Markers Predicting Response to Neoadjuvant Trastuzumab + Pertuzum in HER2+ Breast Cancer

Use of 64Cu-DOTA-Trastuzumab PET Imaging and Molecular Markers for Prediction of Response to Trastuzumab and Pertuzum-Based Neoadjuvant Therapy

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02827877
Enrollment
18
Registered
2016-07-11
Start date
2016-07-15
Completion date
2026-09-25
Last updated
2025-11-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HER2 Positive Breast Carcinoma, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer

Brief summary

This phase II trial studies how well copper Cu64-DOTA-trastuzumab positron emission tomography (PET) works in predicting response to treatment with trastuzumab and pertuzumab before surgery in patients with human epidermal growth factor receptor 2 (HER2) positive breast cancer that has spread from where it started to nearby tissue or lymph nodes. Diagnostic procedures, such as copper Cu 64 DOTA-trastuzumab PET, may help predict a patient's response to trastuzumab and pertuzumab before surgery in patients with locally advanced HER2 positive breast cancer.

Detailed description

PRIMARY OBJECTIVES: I. To evaluate the standardized uptake value maximum (SUVmax) in patients with previously untreated HER2+ breast cancer. SECONDARY OBJECTIVES: I. To evaluate if the uptake of copper 64 Cu-64-DOTA-trastuzumab, a proposed indicator of responsiveness to HER2-directed therapy, correlates with serpin peptidase inhibitor alpha-1 antiproteinase, antitrypsin, member 1 gene (SERPINA1) expression, which has been shown to be associated with estrogen receptor positive (ER+)/ HER2+ patient survival, both in the HER2+/ER+ patients and in all patients. II. To compare uptake of copper Cu 64-DOTA-trastuzumab in the patients with complete pathologic response (pCR) versus (vs) non-pCR patients. OUTLINE: Patients receive trastuzumab intravenously (IV) over 15 minutes immediately before receiving copper Cu 64-DOTA-trastuzumab IV on day 0. Patients undergo PET scans at 18-24 and 42-48 hours, on day 1 and 2. Within 4 days after completion of PET scans, patients then receive trastuzumab IV over 30-90 minutes weekly or every 3 weeks and pertuzumab IV over 30-60 minutes. Treatment repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo surgery after 6 cycles of trastuzumab and pertuzumab. After completion of study treatment, patients are followed up for 1 year.

Interventions

OTHERLaboratory Biomarker Analysis

Correlative studies

BIOLOGICALPertuzumab

Given IV

PROCEDUREPositron Emission Tomography

Undergo PET

PROCEDURETherapeutic Conventional Surgery

Undergo surgery

BIOLOGICALTrastuzumab

Given IV

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
City of Hope Medical Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Participants must be women who have histological confirmation of HER2 positive breast cancer * The primary tumor must be \>= 2.0cm in size and/or have biopsy proven axillary nodes that are \>= 2.0cm in size by mammography, ultrasound, or magnetic resonance imaging (MRI) * The current cancer must over express HER2 as determined by immunohistochemistry (IHC) and/or fluorescence in situ hybridization (FISH) * Patients may not have received prior HER2 directed therapies * Participants must have normal cardiac ejection fraction (per label, as defined as institutional normal) * Planned neoadjuvant therapy with six cycles of combined pertuzumab, trastuzumab and chemotherapy * Ability to provide informed consent * Negative Serum Pregnancy test

Exclusion criteria

* Participants who are not considered candidates for pertuzumab + trastuzumab + chemotherapy * Concurrent malignancy other than non-melanoma skin cancer * Patients must not have known metastatic disease * Patients must not have received prior treatment for the current breast cancer

Design outcomes

Primary

MeasureTime frameDescription
Response to Neoadjuvant Chemotherapy Determined at Surgery (Lumpectomy or Mastectomy).Up to 1 yearThe response assessment is performed at the time of definitive surgery. Patients' disease will be staged in the conventional manner according to the AJCC. The primary endpoint is complete pathologic response defined as no evidence of residual invasive cancer in either the breast or regional lymph nodes.

Other

MeasureTime frameDescription
SUV Measurement by 64Cu-DOTA Trastuzumab PETBaselineFirst Scan SUV Maximum, measurement by 64Cu-DOTA trastuzumab PET SUV is Standard Uptake Value. SUV = tumor activity concentration x patient body weight/injected activity decay-corrected to time of scan.

Countries

United States

Participant flow

Participants by arm

ArmCount
Treatment (Trastuzumab, Copper Cu 64-DOTA-trastuzumab PET)
Patients receive trastuzumab IV over 15 minutes immediately before receiving copper Cu 64-DOTA-trastuzumab IV on day 0. Patients undergo PET scans at 18-24 and 42-48 hours, on day 1 and day 2. Within 4 days after completion of PET scans, patients receive trastuzumab IV over 30-90 minutes weekly or every 3 weeks and pertuzumab IV over 30-60 minutes. Treatment repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo surgery after 6 cycles of trastuzumab and pertuzumab. Copper Cu 64-DOTA-Trastuzumab: Given IV Laboratory Biomarker Analysis: Correlative studies Pertuzumab: Given IV Positron Emission Tomography: Undergo PET Therapeutic Conventional Surgery: Undergo surgery Trastuzumab: Given IV
18
Total18

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyWithdrawal by Subject1

Baseline characteristics

CharacteristicTreatment (Trastuzumab, Copper Cu 64-DOTA-trastuzumab PET)
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
18 Participants
Age, Continuous54.9 years
Race/Ethnicity, Customized
Race/Ethnicity
Asian; Non-Hispanic or Latino
4 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Black; Non-Hispanic or Latino
2 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Caucasian; Hispanic or Latino
8 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Caucasian; Non-Hispanic or Latino
3 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Not Disclosed; Hispanic or Latino
1 Participants
Region of Enrollment
United States
18 Participants
Sex: Female, Male
Female
18 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 18
other
Total, other adverse events
18 / 18
serious
Total, serious adverse events
2 / 18

Outcome results

Primary

Response to Neoadjuvant Chemotherapy Determined at Surgery (Lumpectomy or Mastectomy).

The response assessment is performed at the time of definitive surgery. Patients' disease will be staged in the conventional manner according to the AJCC. The primary endpoint is complete pathologic response defined as no evidence of residual invasive cancer in either the breast or regional lymph nodes.

Time frame: Up to 1 year

Population: protocol patients

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Treatment (Trastuzumab, Copper Cu 64-DOTA-trastuzumab PET)Response to Neoadjuvant Chemotherapy Determined at Surgery (Lumpectomy or Mastectomy).Response14 Participants
Treatment (Trastuzumab, Copper Cu 64-DOTA-trastuzumab PET)Response to Neoadjuvant Chemotherapy Determined at Surgery (Lumpectomy or Mastectomy).Non-response4 Participants
Other Pre-specified

SUV Measurement by 64Cu-DOTA Trastuzumab PET

First Scan SUV Maximum, measurement by 64Cu-DOTA trastuzumab PET SUV is Standard Uptake Value. SUV = tumor activity concentration x patient body weight/injected activity decay-corrected to time of scan.

Time frame: Baseline

Population: protocol patients

ArmMeasureValue (MEDIAN)
Treatment (Trastuzumab, Copper Cu 64-DOTA-trastuzumab PET)SUV Measurement by 64Cu-DOTA Trastuzumab PET6.6 SUV

Source: ClinicalTrials.gov · Data processed: Feb 26, 2026