CPG 7909 Plus Herceptin® In Patients With Metastatic Breast Cancer

Pfizer

Status and phase: Completed; Phase 2

Conditions: Carcinoma, Breast

Treatments: Drug: 0.08 mg/kg CpG 7909; Drug: 0.04 mg/kg CpG 7909; Drug: Herceptin®; Drug: 0.16 mg/kg CpG 7909; Drug: 0.12 mg/kg CpG 7909

Study type: Interventional

Funder types: Industry

Identifiers

NCT00043394

A8501021, CO15

C015

Details and patient eligibility

About

To determine the safety and efficacy of CPG 7909 Injection given with Herceptin to patients with metastatic breast cancer.

Enrollment: 16 patients

Sex: Female

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Histologically confirmed breast cancer with metastases
• Tumor that has overexpression of HER2 as documented by being either FISH-positive or HER2/neu 3+ confirmed by immunohistochemistry
• Patients may have had up to three prior chemotherapy regimens for metastatic disease, which may have been given in combination with Herceptin® and which may have been discontinued due to toxicities. In addition, patients may have had adjuvant chemotherapy.
• Phase II only: Must have measurable disease by RECIST criteria (defined in section 8) with at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded) as > 20 mm with conventional techniques, or as > 10 mm with spiral CT scan

Exclusion criteria

• Any prior therapy with anthracycline + Herceptin® concurrently
• Significant cardiovascular disease (e.g., NYHA class 3 congestive heart failure, myocardial infarction within the past 6 months, unstable angina; coronary angioplasty within the past 6 months, uncontrolled atrial or ventricular cardiac arrhythmias) or left ventricular ejection fraction < 50%
• Pre-existing autoimmune or antibody-mediated diseases including but not limited to: systemic lupus erythematosus, rheumatoid arthritis, multiple sclerosis, Sjogren's syndrome, autoimmune thrombocytopenia

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Single Group Assignment

Masking: None (Open label)

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16 participants in 4 patient groups

Cohort 1

Experimental group

Description:

0.04 mg/kg CpG 7909

Treatment:

Drug: Herceptin®

Drug: 0.04 mg/kg CpG 7909

Drug: Herceptin®

Drug: Herceptin®

Drug: Herceptin®

Cohort 2

Experimental group

Description:

0.08 mg/kg CpG 7909

Treatment:

Drug: Herceptin®

Drug: 0.08 mg/kg CpG 7909

Drug: Herceptin®

Drug: Herceptin®

Drug: Herceptin®

Cohort 3

Experimental group

Description:

0.12 mg/kg CpG 7909 Injection once weekly

Treatment:

Drug: 0.12 mg/kg CpG 7909

Drug: Herceptin®

Drug: Herceptin®

Drug: Herceptin®

Drug: Herceptin®

Cohort 4

Experimental group

Description:

0.16 mg/kg CpG 7909

Treatment:

Drug: 0.16 mg/kg CpG 7909

Drug: Herceptin®

Drug: Herceptin®

Drug: Herceptin®

Drug: Herceptin®