{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"2"},{"groupId":"OG001","value":"0"},{"groupId":"OG002","value":"0"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"89"},{"groupId":"OG001","value":"92"},{"groupId":"OG002","value":"24"}],"units":"Participants"}],"description":"Serum samples were collected for the determination of anti-GSK2857916 antibodies (ADA) using a validated electrochemiluminescent (ECL) immunoassay. The assay involved screening, confirmation and titration steps. If serum samples tested positive in the screening assay, they were considered 'potentially positive' and were further analyzed for the specificity using the confirmation assay. Samples that confirmed positive in the confirmation assay were reported as 'positive'. Confirmed positive ADA samples were further characterized in the titration assay to quasi-quantitate the amount of ADA in the sample. Additionally, confirmed positive ADA samples were also tested in a validated neutralizing antibody assay to determine the potential neutralizing activity of the ADA.","groups":[{"description":"Participants were administered frozen liquid (30 mg/vial solution in a single use vial) at a dose of 2.5 mg/kg GSK2857916 as IV solution once every three weeks for a maximum of up to 39 cycles (1 cycle= 21 days). Frozen liquid was diluted with 0.9 percent saline.","id":"OG000","title":"Main Study: GSK2857916 2.5 mg/kg (Frozen Liquid)"},{"description":"Participants were administered frozen liquid (30 mg/vial solution in a single use vial) at a dose of 3.4 mg/kg GSK2857916 as IV solution once every three weeks for a maximum of up to 32 cycles (1 cycle= 21 days). Frozen liquid was diluted with 0.9 percent saline.","id":"OG001","title":"Main Study: GSK2857916 3.4 mg/kg (Frozen Liquid)"},{"description":"Participants were administered lyophilized powder (100 mg/vial in a single use vial) at a dose of 3.4 mg/kg GSK2857916 given IV for a maximum of 35 cycles (1 cycle= 21 days). Lyophilized powder was reconstituted using water for injection.","id":"OG002","title":"Main Study: GSK2857916 3.4 mg/kg (Lyophilized)"}],"paramType":"COUNT_OF_PARTICIPANTS","populationDescription":"Full Safety Population. 3 participants out of 221 participants did not receive any study treatment and thus, were excluded from the Full Safety Population. Only those participants with data available at the specified data points were analyzed.","reportingStatus":"POSTED","timeFrame":"Up to 186 weeks","title":"Number of Participants With at Least One Confirmed Positive Post-Baseline Anti-drug Antibody (ADA) Result","type":"SECONDARY","unitOfMeasure":"Participants"}