{"denomUnitsSelected":"Participants","description":"Evaluate the pharmacokinetic profiles of high dose topotecan and melphalan and to investigate the pharmacodynamic relationships with respect to the efficacy and toxicity of this regimen in each age group. Pharmacokinetics of Topotecan: For all dose levels, topotecan levels on Day -4 will be obtained at -15 min, 20 min into 30 min infusion, and 5 min, 15 min, 30 min, 1 h, 2 h, 4 h, 8 h, and 23 h after the 30 min infusion. Pharmacokinetics of Melphalan: For all dose levels, melphalan levels during the first day of cytoxan priming chemotherapy and on Day -4 will be obtained before, at the end of the infusion, and 5 minutes (min), 15 min, 30 min, 45 min, 60 min, 90 min, 120 min and 180 min after the infusion. The infusion time for the test dose of melphalan is over 5 min and for the high-dose is over 30 min.","reportingStatus":"NOT_POSTED","timeFrame":"Predetermined time points in protocol","title":"Pharmacokinetic Profiles of High Dose Topotecan and Melphalan","type":"OTHER_PRE_SPECIFIED"}