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Evaluating Panitumumab (ABX-EGF) Monotherapy in Patients With Metastatic Colorectal Cancer Following Treatment With Fluoropyrimidine, Irinotecan, and Oxaliplatin Chemotherapy

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ClinicalTrials.gov Identifier: NCT00083616
Recruitment Status : Completed
First Posted : May 28, 2004
Results First Posted : July 29, 2011
Last Update Posted : January 10, 2014
Sponsor:
Information provided by (Responsible Party):
Amgen

Study Description
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Brief Summary:
The purpose of this study is to determine that panitumumab will have clinically meaningful anti-tumor activity in patients with metastatic colorectal cancer who have developed progressive disease or relapsed while on or after prior fluoropyrimidine, irinotecan and oxaliplatin chemotherapy.

Condition or disease Intervention/treatment Phase
Colorectal Cancer Metastatic Cancer Biological: Panitumumab Phase 2

Detailed Description:
Panitumumab was administered once every 2 weeks until participants developed progressive disease, were unable to tolerate panitumumab, or discontinued treatment for other reasons (eg, administrative decision). Participants then attended a safety follow-up visit 4 weeks from the last panitumumab infusion. Participants were subsequently contacted every 3 months from the last panitumumab infusion through month 24 to assess disease status and survival.
Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 185 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase 2 Multicenter Single Arm Clinical Trial of ABX-EGF Monotherapy in Subjects With Metastatic Colorectal Cancer Following Treatment With Fluoropyrimidine, Irinotecan, and Oxaliplatin Chemotherapy
Study Start Date : March 2004
Actual Primary Completion Date : May 2007
Actual Study Completion Date : December 2008

Resource links provided by the National Library of Medicine

Drug Information available for: Panitumumab

Arms and Interventions
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Arm Intervention/treatment
Experimental: Panitumumab
Participants received panitumumab 6 mg/kg once every 2 weeks weeks administered by intravenous (IV) infusion until progressive disease, inability to tolerate the investigational product, or discontinuation of treatment for other reasons.
 Biological: Panitumumab
Panitumumab 6 mg/kg every once 2 weeks weeks administered by intravenous (IV) infusion.
Other Names:
  • ABX-EGF
  • Vectibix


Outcome Measures
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Primary Outcome Measures :
  1. Number of Participants With Objective Tumor Response Through Week 16 [ Time Frame: 16 weeks ]
    Confirmed objective tumor response (complete or partial response) based on modified World Health Organization (WHO) criteria, through week 16. Tumor response was assessed by a central Independent Review Committee (IRC) and confirmation 4 weeks after initial assessment was required. Complete Response (CR): Disappearance of all index and non-index lesions and no new lesions. Partial Response (PR): At least a 50% decrease in the sum of the product of the longest diameters (SPD) of index lesions taking as reference the Baseline SPD, and no new non-index lesions and no "unequivocal progression" of non-index lesions, or, the disappearance of all index lesions and persistence of one or more non-index lesions not qualifying for either CR or Progressive Disease.

  2. Duration of Response [ Time Frame: Until the data cut-off date of 22 December 2006. Maximum time of follow-up was 128 weeks. ]
    The time from first objective response to first observed progression of disease or death if the death was due to disease progression (whichever comes first); participants who respond and have not progressed while on study or died for reasons other than disease progression while on study were censored at their last evaluable disease assessment date. Response (complete or partial response) was assessed per modified WHO criteria by the central IRC. Complete Response (CR): Disappearance of all index and non-index lesions and no new lesions. Partial Response (PR): At least a 50% decrease in the sum of the product of the longest diameters (SPD) of index lesions taking as reference the Baseline SPD, and no new non-index lesions and no "unequivocal progression" of non-index lesions, or, the disappearance of all index lesions and persistence of one or more non-index lesions not qualifying for either CR or Progressive Disease.


Secondary Outcome Measures :
  1. Number of Participants With Objective Tumor Response Throughout Study [ Time Frame: Until the data cut-off date of 22 December 2006. Maximum time of follow-up was 128 weeks. ]
    Confirmed objective tumor response (complete or partial response) based on modified World Health Organization (WHO) criteria, throughout the duration of the study Tumor response was assessed by a central Independent Review Committee (IRC) and confirmation 4 weeks after initial assessment was required. Complete Response (CR): Disappearance of all index and non-index lesions and no new lesions. Partial Response (PR): At least a 50% decrease in the sum of the product of the longest diameters (SPD) of index lesions taking as reference the Baseline SPD, and no new non-index lesions and no "unequivocal progression" of non-index lesions, or, the disappearance of all index lesions and persistence of one or more non-index lesions not qualifying for either CR or Progressive Disease.

  2. Time to Response [ Time Frame: Until the data cut-off date of 22 December 2006. Maximum time of follow-up was 128 weeks. ]
    Median time from enrollment to objective tumor response for participants who responded.

  3. Progression-free Survival Time [ Time Frame: Until the data cut-off date of 22 December 2006. Maximum follow-up time was 128 weeks. ]
    Kaplan-Meier estimate of median time from enrollment to death or first observed disease progression (whichever comes first). Participants who did not progress while on study and did not die while on study were censored at the last evaluable disease assessment date.

  4. Time to Disease Progression [ Time Frame: Until the data cut-off date of 22 December 2006. Maximum follow-up time was 128 weeks. ]
    Kaplan-Meier estimate of the median time from enrollment to first observed disease progression or death if death was due to disease progression (whichever comes first). Participants who did not progress while on study or died for reasons other than disease progression while on study were censored at their last evaluable disease assessment date.

  5. Time to Treatment Failure [ Time Frame: Until the data cut-off date of 22 December 2006. Maximum follow-up time was 128 weeks. ]
    Kaplan-Meier estimate of median time from enrollment to treatment failure, defined as the date the decision was made to end treatment. Participants remaining in the treatment phase at the time of the analysis were censored on their last visit date.

  6. Duration of Stable Disease [ Time Frame: Until the data cut-off date of 22 December 2006. Maximum follow-up time was 128 weeks. ]
    Kaplan-Meier estimates of the median time from enrollment to the date of first observed disease progression or death due to disease progression among those participants with a best outcome of stable disease. Stable disease (SD): Neither sufficient shrinkage of Index lesions to qualify for partial response nor sufficient increase to qualify for progressive disease (PD) taking as reference the nadir sum of the products of the longest diameters (SPD) since the treatment started and the disappearance of or persistence of one or more non-index lesions not qualifying for PD.

  7. Overall Survival [ Time Frame: Until the data cut-off date of 22 December 2006. Maximum follow-up time was 128 weeks. ]
    Kaplan-Meier estimate of median time from enrollment to death from any cause. Deaths were recorded during treatment, safety follow-up and long term follow-up.


Eligibility Criteria
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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Pathologic diagnosis of colorectal adenocarcinoma (diagnostic tissue obtained by tissue biopsy)
  • Metastatic colorectal carcinoma
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1 or 2
  • Documented evidence of disease progression during, or following treatment, with fluoropyrimidine, irinotecan and oxaliplatin chemotherapy for metastatic colorectal cancer
  • Radiographic documentation of disease progression during or within 6 months following the most recent chemotherapy regimen is required
  • Bidimensionally measurable disease
  • Tumor expressing epidermal growth factor receptor (EGFr) by immunohistochemistry
  • At least 2 but no more than 3 prior chemotherapy regimens for metastatic colorectal cancer
  • Adequate hematologic, renal and hepatic function

Exclusion Criteria:

  • Symptomatic brain metastases requiring treatment
  • Patient with a history of interstitial pneumonitis or pulmonary fibrosis or evidence of interstitial pneumonitis or pulmonary fibrosis
  • Use of systemic chemotherapy or radiotherapy within 30 days before enrollment
  • Prior epidermal growth factor receptor targeting agents
  • Prior anti-tumor therapies including prior experimental agents or approved anti-tumor small molecules and biologics of short (less than 1 week) serum half-life within 30 days before enrollment, or prior experimental or approved proteins with longer serum half-life (e.g., AvastinTM) within 6 weeks before enrollment
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00083616


Sponsors and Collaborators
Amgen
Investigators
Layout table for investigator information
Study Director: MD Amgen
More Information
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Additional Information:

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: Amgen
ClinicalTrials.gov Identifier: NCT00083616    
Obsolete Identifiers: NCT00087243
Other Study ID Numbers: 20030167
First Posted: May 28, 2004    Key Record Dates
Results First Posted: July 29, 2011
Last Update Posted: January 10, 2014
Last Verified: December 2013
Keywords provided by Amgen:
EGFr
Clinical Trial
Panitumumab
ABX-EGF
Immunex
 Metastatic Cancer
Vectibix
Abgenix
Amgen
Additional relevant MeSH terms:
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Colorectal Neoplasms
Neoplasm Metastasis
Intestinal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Neoplasms
Digestive System Diseases
Gastrointestinal Diseases
 Colonic Diseases
Intestinal Diseases
Rectal Diseases
Neoplastic Processes
Pathologic Processes
Panitumumab
Antineoplastic Agents, Immunological
Antineoplastic Agents