Elaboration of a Model for Predicting Efficacy of Monoclonal Antibodies (Cetuximab and Bevacizumab) in Patients With Colorectal Cancer and Liver Metastases

Sponsor
Hospices Civils de Lyon
Study ID
NCT00327093
Phase
PHASE4
Status
Terminated

Conditions

Eligibility Criteria

Sex
ALL
Age
18 Years - 75 Years
Healthy Volunteers
Not accepted

Interventions

  • cetuximab — DRUG
    indication : second intention treatment
  • bevacizumab — DRUG
    Indication: first intention treatment

Study Details

Primary Objective: This trial is elaborating a model for rapidly predicting (day 21) the response to monoclonal antibodies anti-EGFR and anti-VEGF (cetuximab and bevacizumab) based on biological markers and/or functional imaging. The response to treatment is evaluated by the conventional method after 2 months (Response Evaluation Criteria in Solid Tumors \[RECIST\] criteria). Secondary Objectives: 1. This trial is also analyzing the correlation between the magnitude of response to treatment at 2 months (stabilization or objective response, RECIST criteria) and that of response observed after 6 months of treatment. 2. The organisational objective is to develop a tumour bank of metastatic colorectal cancer. Population: The population includes 252 male and female patients with metastatic colorectal cancer justifying the use of cetuximab or bevacizumab, with no heart disease. Techniques: Computed tomography (CT scan), functional imaging (ultrasound with SonoVue); molecular imaging (positron emission tomography \[PET\] with fluorodeoxyglucose F18 \[18-FDG\]); and biology and pathology on microbiopsy of liver metastasis are used. Outcome Criteria: The primary outcome is response to treatment with monoclonal antibodies according to RECIST criteria at two months. Studied Factors: Radiology: 1. CT scan: RECIST criteria (gold standard); 2. Ultrasound with SonoVue injection: 1 representative target (delay of contrast appearance, peak of rising, curve of increase and decrease of the signal, area under the curve, time of average transit). Nuclear Medicine: PET scan and 18-FDG (standard uptake values \[SUV\]) Molecular Characterization of Tumors: p53 status; microsatellite instability (MSI) status; expression of oncogenes; EGFR status; VEGF status; determination of FcgammaRIIIA polymorphisms Statistics: 1. Descriptive analyses; 2. Analysis of the appropriate threshold to measure: response to treatment by an ultrasound with SonoVue and by PET scan; correlation between response predicted by the ultrasound with SonoVue and the PET; conventional morphological CT at 2 months 3. Analysis of prognostic factors: 1. Evaluation of the role of each prognostic factor (pathology and imaging) on response to treatment; 2. Multivariate analysis of prognostic factors; 3. Analysis of the prognostic power of early response at 2 months on the response observed after 6 months of treatment.

Key Dates

First listed
May 18, 2006
Start date
May 31, 2006
Status verified
Feb 2009
Primary completion
Oct 31, 2008
Completion
Oct 31, 2008

Study Design

Enrollment
31 participants (actual)
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • Experimental: 1
    Bevacizumab
  • Experimental: 2
    Cetuximab

Primary Outcome Measure

Elaboration of a predictive model, based on biological and functional imaging parameters, for the response to monoclonal antibodies as assessed through RECIST criteria 2 months after the beginning of treatment [ Time Frame: at 7 weeks ]

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