{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","spread":"33.41","value":"-49.7"},{"groupId":"OG001","spread":"34.04","value":"-58.60"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"30"},{"groupId":"OG001","value":"11"}],"units":"Participants"}],"description":"The tumor volume reduction rate was defined as percent decrease in the sum of the products of the lesion diameters at Day 14. It was measured as the mean change in the sum of the products of the lesion diameters (SPD) at Day 14.","dispersionType":"Standard Deviation","groups":[{"description":"Participants received ibrutinib based on age group and BSA in combination with CIT (investigator choice of RICE or RVICI) until 3 treatment cycles, transplantation if indicated, or until progressive disease (PD) or unacceptable toxicity. For both regimens, triple intrathecal therapy consisting of methotrexate, corticosteroid, and cytarabine will be administered for central nervous system (CNS) prophylaxis in age-appropriate dosing. Participants of age groups 1-5 years and 6-11 years received ibrutinib 440 mg/m\\^2, and age group 12-17 years received Ibrutinib 329 mg/m\\^2 (dose selected from Part 1).","id":"OG000","title":"Part 2: Ibrutinib+CIT (RICE or RVICI)"},{"description":"Participants received CIT (investigator choice of RICE or RVICI) alone based on age group and BSA until 3 treatment cycles, transplantation if indicated, or until PD or unacceptable toxicity. For both regimens, triple intrathecal therapy consisting of methotrexate, corticosteroid, and cytarabine will be administered for CNS prophylaxis in age-appropriate dosing. The RICE regimen was composed of rituximab 750 mg/m\\^2, ifosfamide 9 g/m\\^2, carboplatin 635 mg/m\\^2, etoposide 300 mg/m\\^2, and dexamethasone 100 mg/m\\^2. The RVICI regimen was composed of rituximab 750 mg/m\\^2, vincristine 1.6 mg/m\\^2, idarubicin 20 mg/m\\^2, carboplatin 800 mg/m\\^2, ifosfamide 10 g/m\\^2, and dexamethasone 100 mg/m\\^2 (all doses represented as cumulative administered in 1 cycle).","id":"OG001","title":"Part 2: Chemoimmunotherapy"}],"paramType":"LEAST_SQUARES_MEAN","populationDescription":"The ITT Population consisted of all randomized participants; participants was analyzed based on randomization, regardless of study drug received. Here 'N' (number of participants analyzed) signifies number of participants who were evaluable for this outcome measure.","reportingStatus":"POSTED","timeFrame":"At Day 14","title":"Part 2: Tumor Volume Reduction Rate at Day 14","type":"SECONDARY","unitOfMeasure":"Percent change"}