Neoplasms

Symptoms and General Pathology

All Conditions

Digestive System Diseases

Neoplasm Metastasis

Colorectal Neoplasms

Intestinal Neoplasms

Gastrointestinal Neoplasms

Digestive System Neoplasms

Gastrointestinal Diseases

Colonic Diseases

Intestinal Diseases

Rectal Diseases

Neoplastic Processes

Antineoplastic Agents

All Drugs and Chemicals

Irinotecan

Oxaliplatin

Panitumumab

Antineoplastic Agents, Immunological

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.

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

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.

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.

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

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

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.

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.

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.

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

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.

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.

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.

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.

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.

Amgen

The table of Other Adverse Events summarizes the most frequent non-serious occurrences of adverse events.

Open-label panitumumab administered by intravenous (IV) infusion at a dose of 6 mg/kg given once every 2 weeks until participants developed progressive disease, were unable to tolerate panitumumab, or discontinued treatment for other reasons.

Age, Continuous

Sex: Female, Male

American Indian or Alaska Native

Asian

Black or African American

Hispanic or Latino

Japanese

Native Hawaiian or Other Pacific Islander

White or Caucasian

Other

Aborigine

Race/Ethnicity, Customized

Study Director

Adjudicated Prior Failures Set, composed of participants confirmed to be eligible by the Independent Eligibility Review Committee (IERC)

Number of Participants With Objective Tumor Response Through Week 16

Subset of the Adjudicated Prior Failures Set, composed of participants confirmed to be eligible by the Independent Eligibility Review Committee (IERC), who had a confirmed obective tumor response

Duration of Response

Number of Participants With Objective Tumor Response Throughout Study

Subset of Adjudicated Prior Failures Set, composed of participants confirmed to be eligible by the Independent Eligibility Review Committee (IERC), who had a confirmed objective tumor response

Time to Response

Progression-free Survival Time

Time to Disease Progression

Time to Treatment Failure

Subset of Adjudicated Prior Failures Set, composed of participants confirmed to be eligible by the Independent Eligibility Review Committee (IERC), with a best outcome of stable disease

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

Trial Identification

Conditions

Interventions

Study Description

Keywords

Eligibility

Locations

Contact Details

Useful links and downloads for this trial