PTK787 + Trastuzumab for HER2 Overexpressing Metastatic Breast Cancer

Phase 2TerminatedNCT00216047

Hoosier Cancer Research Network7 enrolled

Overview

HER2 gene amplification increases VEGF production in breast cancers; combined inhibition of HER2 and VEGF enhances response in xenograft models. The upregulation of VEGF in HER2-overexpressing breast cancers may contribute to the aggressive phenotype observed in HER2-positive breast cancer. New therapeutics targeting VEGF and/or its receptors may enhance the efficacy of trastuzumab monotherapy. This trial will investigate the safety and efficacy of combined HER2 and VEGF inhibition.

OUTLINE: This is a multi-center study. PTK787 daily plus trastuzumab 4 mg/kg IV week 1, followed by 2 mg/kg weekly with disease evaluation every other cycle. Patients may continue treatment until disease progression or toxicity intervenes. Performance Status: ECOG 0 or 1 Life Expectancy: Not specified Hematopoietic: * ANC \> 1500 mm3 * Platelets \> 100,000 mm3 * Hemoglobin \> 9 g/dL * PTT and INR \< 1.5 x ULN Hepatic: * ALT and AST \< 3 x ULN (\< 5 x ULN in patients with known liver metastases) * Alkaline phosphatase \< 2.5 x ULN * Serum bilirubin \< 1.5 x ULN Renal: * Serum creatinine \< 1.5 x ULN * Proteinuria \< 1+ by dipstick OR total urinary protein \< 500 mg/24 hours with measured creatinine clearance (CrCl) ≥ 50 mL/min Cardiovascular: * No clinically significant cardiac disease (e.g. congestive heart failure, symptomatic coronary artery disease and cardiac arrhythmias not well controlled with medication) or myocardial infarction within the last 6 months. * LVEF \> LLN by MUGA or ECHO (obtained within 28 days prior to being registered for protocol therapy) Pulmonary: * Not specified

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Breast Cancer

Interventions

PTK787DRUG

PTK787 daily

TrastuzumabDRUG

Trastuzumab 4 mg/kg IV week 1, followed by 2 mg/kg weekly with disease evaluation every other cycle\*

Eligibility

Sex: FEMALEMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Histologic or cytologic diagnosis of breast cancer with evidence of measurable (1) unresectable, locally recurrent, or (2) metastatic disease. Locally recurrent disease must not be amenable to resection OR radiation with curative intent. * Patient's disease may not involve more than 3 metastatic sites. In addition, patient may not be symptomatic from pulmonary metastasis or have liver metastasis involving \> 50% of parenchyma. * HER2 gene amplification by FISH. HER protein overexpression by immunohistochemistry will not be sufficient for entry. * Negative pregnancy test Exclusion Criteria: * No prior cytotoxic chemotherapy or trastuzumab for locally recurrent or metastatic disease. * No prior treatment with any VEGF inhibiting agents * No history or presence of central nervous system (CNS) disease. * No other forms of cancer therapy including radiation, chemotherapy and hormonal therapy within 21 days prior to being registered for protocol therapy. * No major surgery within 28 days prior to being registered for protocol therapy. * No uncontrolled hypertension (SBP \> 170, DBP \> 90), history of labile hypertension or history of poor compliance with antihypertensive therapy. * No requirement for therapeutic anticoagulation, regular aspirin (\> 325 mg/day) or NSAID use. * No current breast feeding. * No impairment of gastrointestinal (GI) function that may significantly alter the absorption of PTK787. * No evidence of other serious concomitant systemic disorders incompatible with the study (at the discretion of the investigator).

Locations (8)

Elkhart Clinic

Elkhart, Indiana, United States

Fort Wayne Oncology & Hematology, Inc

Fort Wayne, Indiana, United States

Center for Cancer Care at Goshen Health System

Goshen, Indiana, United States

Indiana University Cancer Center

Indianapolis, Indiana, United States

Outcomes

Primary Outcomes

Phase I Cohorts:

Time frame: 18 months

The primary objective is to ensure the safety and tolerability of the combination of Trastuzumab and PTK787,

Time frame: 18 months

Phase II Cohorts:

Time frame: 18 months

To assess response rate of PTK787 combined with trastuzumab in patients with newly diagnosed HER2 overexpressing

Time frame: 18 months

Secondary Outcomes

Phase II Cohorts:

Time frame: 12 months

To assess the safety and tolerability of PTK787 combined with trastuzumab

Time frame: 12 months

To assess the time to progression and clinical benefit of PTK787 combined with trastuzumab

Time frame: 12 months

Data from ClinicalTrials.gov

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