- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00784667
Dual Inhibition of EGFR Signalling Using the Combination of Cetuximab and Erlotinib (Dux)
Dual Inhibition of EGFR Signalling Using the Combination of Cetuximab (Erbitux) and Erlotinib (Tarceva) in Patients With Chemotherapy-refractory Colorectal Cancer
This is a clinical trial investigating the effectiveness and safety of the combination of the study drugs cetuximab and erlotinib in patients with advanced (metastatic) refractory colorectal (bowel) cancer. If bowel cancer has spread to other organs (metastatic colorectal cancer), it is usually incurable and life-expectancy without treatment is less then 6 months on average. Currently, chemotherapy has been shown to have a significant impact in advanced colorectal cancer in terms of maintenance of quality of life and extension of survival. However, ultimately tumours will develop resistance to chemotherapy. Treatment options and subsequent survival at that stage are very limited. Therefore, new therapeutic approaches are urgently needed.
It is common for colorectal cancer cells to contain growth receptors, like antennae, on their surface which regulate their growth. The drugs used in this trial have been shown to be effective in targeting one of these growth receptors; the epidermal growth factor receptor (EGFR). Cetuximab is an antibody (protein produced by the immune system involved in the defense of the body against infections) against EGFR. Cetuximab has been shown to improve the survival of patients with chemotherapy refractory advanced colorectal cancer. Erlotinib is a protein that prevents activation and hence signaling by EGFR. Erlotinib improves survival in patients with advanced lung cancer. Although, each of these drugs are known to be effective at inhibiting EGFR when they are given alone, at least in some cases, it is hoped that using two drugs that target the same receptor pathway in different ways will provide a more effective treatment.
50 patients from four hospitals in Australia will participate in this trial, with approximately 25 patients being enrolled at Austin Health. All participants will receive the same treatment.
Neither of the study drugs are chemotherapy, and hence it is expected that the treatment would be well tolerated. The most frequent side effect associated with EGFR inhibitors is skin rash. Other possible side effects are diarrhea and low magnesium levels.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
Contacts and Locations
Study Locations
-
-
New South Wales
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Sydney, New South Wales, Australia
- Royal North Shore Hospital
-
-
South Australia
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Adelaide, South Australia, Australia
- Queen Elizabeth Hospital
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Victoria
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Ballarat, Victoria, Australia
- Ballarat Base Hospital
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Melbourne, Victoria, Australia, 3084
- Austin Health
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Age>18 years
- Histological diagnosis of colorectal cancer
- Metastatic disease not amenable to resection
- Measurable disease as assessed by CT scan using RECIST criteria
- Received and failed fluoropyrimidine therapy, where failure is defined as radiological progression after therapy for metastatic disease, prior adjuvant therapy, or toxicity limiting further therapy
- Received and failed oxaliplatin therapy, where failure is defined as radiological progression after therapy for metastatic disease, prior adjuvant therapy ,or toxicity (including neuro-toxicity) limiting further therapy
- Received and failed irinotecan therapy, where failure is defined as radiological progression after therapy for metastatic disease or toxicity limiting further therapy
- ECOG PS 0-1
- Adequate bone marrow function with platelets > 100 X 109/l; neutrophils > 1.5 X 109/l
- Adequate renal function, with calculated creatinine clearance >40 ml/min (Cockcroft and Gault).
- Adequate hepatic function with serum total bilirubin < 1.25 X upper limit of normal range and ALT or AST<2.5xULN (<5xULN if liver metastases present)
- Life expectancy of at least 12 weeks
- No other concurrent uncontrolled medical conditions
- No other malignant disease apart from non-melanotic skin cancer or carcinoma in situ of the uterine cervix or any other cancer treated with curative intent >2 years previously without evidence of relapse
- Women and partners of women of childbearing potential must agree to use adequate contraception
- Written informed consent including consent for biomarker studies
Exclusion Criteria:
- Medical or psychiatric conditions that compromise the patient's ability to give informed consent or to complete the protocol
- Prior treatment with drugs targeting EGFR such as cetuximab, panitumumab or erlotinib
- Participation in any investigational drug study within the previous 4 weeks
- Patients with uncontrolled clinically significant cardiac disease, arrhythmias or angina pectoris
- Untreated CNS metastases
- Pregnancy or lactation
- k-ras mutant tumours now excluded
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Non-Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
To determine the response rate (RECIST criteria). Responses will be evaluated for the whole patient group and separately for k-ras wild-type and k-ras mutant tumours
Time Frame: 6 weekly
|
6 weekly
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Toxicity
Time Frame: Weekly
|
Weekly
|
Progression free survival
Time Frame: 6 weekly
|
6 weekly
|
Overall survival
Time Frame: Weekly
|
Weekly
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Digestive System Diseases
- Neoplasms
- Neoplasms by Site
- Gastrointestinal Neoplasms
- Digestive System Neoplasms
- Gastrointestinal Diseases
- Colonic Diseases
- Intestinal Diseases
- Intestinal Neoplasms
- Rectal Diseases
- Colorectal Neoplasms
- Molecular Mechanisms of Pharmacological Action
- Enzyme Inhibitors
- Antineoplastic Agents
- Antineoplastic Agents, Immunological
- Protein Kinase Inhibitors
- Erlotinib Hydrochloride
- Cetuximab
Other Study ID Numbers
- H2008/03282
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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