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.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
203
Administered by intravenous infusion
Objective Tumor Response Through Week 16
Confirmed objective tumor response was defined as a complete response or partial response from enrollment through Week 16. Tumor response was monitored, beginning at Week 8, per a modified version of the World Health Organization (WHO) criteria for tumor response and progression by an independent review committee central assessment. Complete response was defined per modified WHO criteria as disappearance of all lesions (index and non-index). Partial response was defined as ≥ 50% decrease from Baseline in the sum of the products of the longest diameters (SPD) of index lesions. Scans were required to confirm a complete or partial response no earlier than 4 weeks from the time a response of complete or partial response was first documented.
Time frame: From enrollment through Week 16
Duration of Response
Kaplan-Meier estimate of time time from first objective response to first observed progression of disease or death if the death was due to disease progression (whichever comes first) among participants who had a response at any time on study. Participants who responded and did not progress while on study or who died for reasons other than disease progression while on study were censored at their last evaluable assessment date.
Time frame: From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.
Objective Tumor Response Throughout the Study
Confirmed objective tumor response was defined as a complete response or partial response from enrollment through to the data cut-ff date. Tumor response was monitored, beginning at Week 8, per a modified version of the World Health Organization (WHO) criteria for tumor response and progression by an independent review committee central assessment. Complete response was defined per modified WHO criteria as disappearance of all lesions (index and non-index). Partial response was defined as ≥ 50% decrease from Baseline in the sum of the products of the longest diameters (SPD) of index lesions. Scans were required to confirm a complete or partial response no earlier than 4 weeks from the time a response of complete or partial response was first documented.
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Time frame: From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.
Time to Initial Objective Response
Time from date of enrollment to first objective response; participants with stable disease at their last evaluable assessment date were censored at this date and participants with progressive disease while on study were censored after the last response was observed for all participants.
Time frame: From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.
Progression-free Survival Time
Kaplan-Meier estimate of median time from date of enrollment to date of first observed progression or death (whichever comes first); participants who did not progress while on study and did not die while on study were censored at their last evaluable assessment date.
Time frame: From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.
Time to Disease Progression
Kaplan-Meier estimate of median time from date of enrollment to date of first observed progression or death date if the death was due to disease progression (whichever comes first); participants who have not progressed while on study or died for reasons other than disease progression while on study were censored at their last evaluable assessment date.
Time frame: From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.
Time to Treatment Failure
Kaplan-Meier estimate of median time from date of enrollment to date decision was made to end the treatment phase for any reason; participants who complete the treatment phase or who remain in the treatment phase at the completion of the study were censored at this time.
Time frame: From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.
Duration of Stable Disease
Kaplan-Meier estimate of median time from date of enrollment to date of first observed progression or death date if the death was due to disease progression (whichever comes first); in those participants who had a best response of stable disease. Stable Disease is defined as neither sufficient shrinkage of index lesions to qualify for a partial response nor sufficient increase to qualify for progressive disease taking as reference the nadir sum of the products of the longest diameters since the treatment started.
Time frame: From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.
Overall Survival
Kaplan-Meier estimate of time to death from any cause; participants who had not died while on study or were lost to follow-up were censored at their last contact date.
Time frame: From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.