MRI in Predicting Response in Patients Receiving Combination Chemotherapy and Bevacizumab For Advanced or Metastatic Colorectal Cancer
- Conditions
- Colorectal Cancer
- Interventions
- Registration Number
- NCT00602329
- Lead Sponsor
- Abramson Cancer Center at Penn Medicine
- Brief Summary
RATIONALE: Drugs used in chemotherapy, such as fluorouracil, leucovorin, and oxaliplatin, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Monoclonal antibodies, such as bevacizumab, can block tumor growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. Bevacizumab may also stop the growth of tumor cells by blocking blood flow to the tumor. Giving bevacizumab together with combination chemotherapy may kill more tumor cells. Diagnostic procedures, such as MRI, may help doctors predict a patient's response to treatment and help plan the best treatment.
PURPOSE: This randomized phase II trial is studying how well MRI works in predicting response to combination chemotherapy given together with bevacizumab in treating patients with advanced or metastatic colorectal cancer.
- Detailed Description
OBJECTIVES:
Primary
* To determine the alteration of tumor blood flow using dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in patients with advanced or metastatic colorectal cancer after 2 courses of combination chemotherapy comprising oxaliplatin, fluorouracil, and leucovorin (FOLFOX) and bevacizumab at 5 mg/kg vs 10 mg/kg or FOLFOX alone.
Secondary
* To correlate tumor blood flow, as assessed by DCE-MRI, with time to progression in patients receiving bevacizumab at 5mg/kg vs 10mg/kg.
* To correlate vascular proliferation, as measured by DCE-MRI, with markers of endothelial cell proliferation (i.e., CD31, 34, 105; integrin αvß3; phospho-ERK; Ki67; PCNA; and smooth muscle actin).
* To obtain pilot data on whether assays that measure vascular endothelial cell mitogenic stimulation and mitogenic activity may predict response to therapy, time to progression, and overall survival of patients receiving bevacizumab at 5mg/kg vs 10mg/kg.
* To investigate the association of various markers of apoptosis in tumor cells (e.g., MIF, CREB, or HIF-1-alpha expression/polymorphism and others) and tumor vascularity, as assessed by DCE-MRI.
* To correlate markers of apoptosis in tumor cells with response to therapy, time to progression, and overall survival.
* To determine serum levels of VEGF prior to the initiation of chemotherapy and then prior to courses 2 and 3 of chemotherapy as potential markers of antiangiogenic activity.
OUTLINE: Patients who are eligible to receive bevacizumab are randomized to 1 of 2 treatment arms. Patients who are ineligible to receive bevacizumab receive FOLFOX alone.
* Arm I: Patients receive leucovorin calcium IV over 2 hours and oxaliplatin IV over 2 hours on day 1 and fluorouracil IV continuously over 46 hours (FOLFOX) beginning on day 1. Patients also receive bevacizumab at 5 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity.
* Arm II: Patients receive FOLFOX as in arm I and bevacizumab at 10 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity.
* FOLFOX alone (control): Patients receive FOLFOX as in arm I. All patients undergo dynamic contrast-enhanced MRI at baseline and between courses 2 and 3 (between days 17 and 29) to assess tumor blood flow.
Tumor tissue specimens are obtained from prior colonoscopic biopsy or surgical resection in patients receiving bevacizumab. Tissue specimens are examined by immunohistochemistry to evaluate tumor markers of angiogenesis and apoptosis (e.g., CD31, 34, 105, phospho-ERK, PCNA, Ki67, SMA, and integrin αvß3). Blood specimens are obtained at baseline and prior to courses 2 and 3 (days 15 and 29) to evaluate plasma levels of VEGF.
After completion of study therapy, patients are followed every 2 months for 1 year and then every 3 months thereafter.
Recruitment & Eligibility
- Status
- TERMINATED
- Sex
- All
- Target Recruitment
- 5
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Arm I leucovorin calcium Patients receive leucovorin calcium IV over 2 hours and oxaliplatin IV over 2 hours on day 1 and fluorouracil IV continuously over 46 hours (FOLFOX) beginning on day 1. Patients also receive bevacizumab at 5 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity. Arm II leucovorin calcium Patients receive FOLFOX as in arm I and bevacizumab at 10 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity. FOLFOX alone (control) leucovorin calcium Patients receive FOLFOX as in arm I. Arm II bevacizumab Patients receive FOLFOX as in arm I and bevacizumab at 10 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity. Arm I bevacizumab Patients receive leucovorin calcium IV over 2 hours and oxaliplatin IV over 2 hours on day 1 and fluorouracil IV continuously over 46 hours (FOLFOX) beginning on day 1. Patients also receive bevacizumab at 5 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity. Arm I fluorouracil Patients receive leucovorin calcium IV over 2 hours and oxaliplatin IV over 2 hours on day 1 and fluorouracil IV continuously over 46 hours (FOLFOX) beginning on day 1. Patients also receive bevacizumab at 5 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity. Arm I oxaliplatin Patients receive leucovorin calcium IV over 2 hours and oxaliplatin IV over 2 hours on day 1 and fluorouracil IV continuously over 46 hours (FOLFOX) beginning on day 1. Patients also receive bevacizumab at 5 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity. Arm II fluorouracil Patients receive FOLFOX as in arm I and bevacizumab at 10 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity. FOLFOX alone (control) fluorouracil Patients receive FOLFOX as in arm I. Arm II oxaliplatin Patients receive FOLFOX as in arm I and bevacizumab at 10 mg/kg IV over 90 minutes on day 1. Treatment repeats every 14 days for 6 months in the absence of disease progression or unacceptable toxicity. FOLFOX alone (control) oxaliplatin Patients receive FOLFOX as in arm I.
- Primary Outcome Measures
Name Time Method Analysis of tumor blood flow, assessed by DCE-MRI as percentage change in Ktrans, after 2 courses of FOLFOX and bevacizumab or FOLFOX alone compared to baseline value 2 cycles for all subjects
- Secondary Outcome Measures
Name Time Method Analysis of tumor markers of angiogenesis and apoptosis, and the effect of treatment 2 cycles for all subjects Correlation of tumor blood flow with time to progression 2 cycles Correlation of markers of apoptosis in tumor cells with response to therapy, time to progression, and overall survival 2 cycles for all subjects
Trial Locations
- Locations (1)
Abramson Cancer Center of the University of Pennsylvania
🇺🇸Philadelphia, Pennsylvania, United States