{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"22"},{"groupId":"OG001","value":"0"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"231"},{"groupId":"OG001","value":"232"}],"units":"Participants"}],"description":"Defined as the number of participants with a confirmed complete or partial tumor response, confirmed by a scan no less than 4 weeks after the criteria for response were first met. Participants were evaluated for tumor response according to modified Response Evaluation Criteria in Solid Tumors (RECIST) based on the response assessment from a blinded review of radiographic scans by the Independent Review Committee. Complete Response (CR): Disappearance of all target and non-target lesions and no new lesions. Partial Response (PR): disappearance of all target lesions, and persistence of one or more non-target lesion(s) not qualifying for either CR or progressive disease, or, at least a 30% decrease in the sum of the longest diameters (SLD) of target lesions, taking as reference the baseline SLD, with no progressive disease of non-target lesions.","groups":[{"description":"Panitumumab plus best supportive care (BSC). Panitumumab was administered by intravenous infusion at a dose of 6 mg/kg once every 2 weeks until participants developed progressive disease or were unable to tolerate study drug.","id":"OG000","title":"Panitumumab Plus BSC"},{"description":"Best supportive care defined as the best care available as judged appropriate by the investigator and according to institutional guidelines, including antibiotics, analgesics, radiation therapy for pain control (limited to bone metastases), corticosteroids, transfusions, psychotherapy, growth factors, palliative surgery, or any symptomatic therapy as clinically indicated. For the purpose of this study, best supportive care does not include anti-neoplastic chemotherapy.","id":"OG001","title":"BSC Alone"}],"paramType":"NUMBER","populationDescription":"Intention-to-treat (ITT)","reportingStatus":"POSTED","timeFrame":"From randomization until the data cutoff of 15 March 2007. The median follow-up time was 29.6 weeks in the panitumumab plus BSC group and 31.8 weeks in the BSC alone group.","title":"Objective Tumor Response","type":"SECONDARY","unitOfMeasure":"participants"}