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

Back to results

Primary Purpose

Status

Completed

Phase

Phase 2

Locations

Study Type

Interventional

Intervention

Panitumumab

About this trial

This is an interventional treatment trial for Colorectal Cancer focused on measuring EGFr, Clinical Trial, Panitumumab, ABX-EGF, Immunex, Metastatic Cancer, Vectibix, Abgenix, Amgen

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

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

Sites / Locations

Arms of the Study

Arm 1

Arm Type

Experimental

Arm Label

Panitumumab

Arm Description

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.

Outcomes

Primary Outcome Measures

Number of Participants With Objective Tumor Response Through Week 16

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.

Duration of Response

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

Number of Participants With Objective Tumor Response Throughout Study

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.

Time to Response

Median time from enrollment to objective tumor response for participants who responded.

Progression-free Survival Time

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.

Time to Disease Progression

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.

Time to Treatment Failure

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.

Duration of Stable Disease

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.

Overall Survival

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.

Full Information

NCT ID

NCT00083616

First Posted

May 26, 2004

Last Updated

December 10, 2013

Sponsor

Amgen

1. Study Identification

Unique Protocol Identification Number

NCT00083616

Brief Title

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

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 Type

Interventional

2. Study Status

Record Verification Date

December 2013

Overall Recruitment Status

Completed

Study Start Date

March 2004 (undefined)

Primary Completion Date

May 2007 (Actual)

Study Completion Date

December 2008 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title

Sponsor

Name of the Sponsor

Amgen

4. Oversight

Data Monitoring Committee

Yes

5. Study Description

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.

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.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study

Colorectal Cancer, Metastatic Cancer

Keywords

EGFr, Clinical Trial, Panitumumab, ABX-EGF, Immunex, Metastatic Cancer, Vectibix, Abgenix, Amgen

7. Study Design

Primary Purpose

Treatment

Study Phase

Phase 2

Interventional Study Model

Single Group Assignment

Masking

None (Open Label)

Allocation

N/A

Enrollment

185 (Actual)

8. Arms, Groups, and Interventions

Arm Title

Panitumumab

Arm Type

Experimental

Arm Description

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.

Intervention Type

Biological

Intervention Name(s)

Panitumumab

Other Intervention Name(s)

ABX-EGF, Vectibix

Intervention Description

Panitumumab 6 mg/kg every once 2 weeks weeks administered by intravenous (IV) infusion.

Primary Outcome Measure Information:

Title

Number of Participants With Objective Tumor Response Through Week 16

Description

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.

Time Frame

16 weeks

Title

Duration of Response

Description

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.

Time Frame

Until the data cut-off date of 22 December 2006. Maximum time of follow-up was 128 weeks.

Secondary Outcome Measure Information:

Title

Number of Participants With Objective Tumor Response Throughout Study

Description

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.

Time Frame

Until the data cut-off date of 22 December 2006. Maximum time of follow-up was 128 weeks.

Title

Time to Response

Description

Median time from enrollment to objective tumor response for participants who responded.

Time Frame

Until the data cut-off date of 22 December 2006. Maximum time of follow-up was 128 weeks.

Title

Progression-free Survival Time

Description

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.

Time Frame