{"classes":[{"categories":[{"measurements":[{"groupId":"OG001","value":"79.74"}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"1"},{"groupId":"OG002","value":"0"},{"groupId":"OG003","value":"0"},{"groupId":"OG004","value":"0"},{"groupId":"OG005","value":"0"}],"units":"Participants"}],"title":"Baseline"},{"categories":[{"measurements":[{"groupId":"OG000","value":"39.90"},{"groupId":"OG001","value":"58.86"},{"groupId":"OG005","value":"35.90"}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"1"},{"groupId":"OG001","value":"1"},{"groupId":"OG002","value":"0"},{"groupId":"OG003","value":"0"},{"groupId":"OG004","value":"0"},{"groupId":"OG005","value":"1"}],"units":"Participants"}],"title":"Day 3"},{"categories":[{"measurements":[{"groupId":"OG001","value":"55.74"}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"1"},{"groupId":"OG002","value":"0"},{"groupId":"OG003","value":"0"},{"groupId":"OG004","value":"0"},{"groupId":"OG005","value":"0"}],"units":"Participants"}],"title":"2-4 weeks"},{"categories":[{"measurements":[{"groupId":"OG000","value":"156.00"},{"groupId":"OG001","value":"59.78"},{"groupId":"OG003","value":"239.13"}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"1"},{"groupId":"OG001","value":"1"},{"groupId":"OG002","value":"0"},{"groupId":"OG003","value":"1"},{"groupId":"OG004","value":"0"},{"groupId":"OG005","value":"0"}],"units":"Participants"}],"title":"12 weeks"},{"categories":[{"measurements":[{"groupId":"OG001","value":"65.91"}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"1"},{"groupId":"OG002","value":"0"},{"groupId":"OG003","value":"0"},{"groupId":"OG004","value":"0"},{"groupId":"OG005","value":"0"}],"units":"Participants"}],"title":"24 weeks"},{"categories":[{"measurements":[{"groupId":"OG001","value":"55.66"}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"1"},{"groupId":"OG002","value":"0"},{"groupId":"OG003","value":"0"},{"groupId":"OG004","value":"0"},{"groupId":"OG005","value":"0"}],"units":"Participants"}],"title":"36 weeks"},{"categories":[{"measurements":[{"groupId":"OG001","value":"79.11"}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"1"},{"groupId":"OG002","value":"0"},{"groupId":"OG003","value":"0"},{"groupId":"OG004","value":"0"},{"groupId":"OG005","value":"0"}],"units":"Participants"}],"title":"48 weeks"}],"denoms":[{"counts":[{"groupId":"OG000","value":"1"},{"groupId":"OG001","value":"1"},{"groupId":"OG002","value":"0"},{"groupId":"OG003","value":"1"},{"groupId":"OG004","value":"0"},{"groupId":"OG005","value":"1"}],"units":"Participants"}],"description":"* Arm A patients had blood drawn at the following time points: baseline, 3 days post-MLA, 2-4 weeks post-MLA, and every 12 weeks thereafter for 12 months post-MLA\n* Arm B patients had blood drawn at the following time points: baseline, 3 days post-MLA, week 1, week 2, week 3, week 4, week 5, week 6, and every 8 weeks for the first 2 years or until disease progression, whichever occurs first.\n* S100b is a low-molecular-weight Calcium-binding protein primarily found in astrocytic glial cells of the CNS. It is secreted by astrocytes for neuroprotective and -trophic cellular functions in the CNS. Elevated serum values can be associated with temporal changes in BBB integrity following MLA.","groups":[{"description":"* MLA is a minimally invasive laser surgery currently FDA approved for cytoreductive treatment of brain tumors, both primary and metastatic. MLA employs a small incision in the scalp and skull, through which a thin laser probe is inserted and guided by MR imaging to the core of a tumor mass where it delivers hyperthermic ablation from the core to the rim.\n* Participants will undergo DCE and DSC-MRI imaging at the following time points:\n\n  * no more than 3 weeks prior to MLA (OPTIONAL)\n  * within approximately 4 days after MLA\n  * 2-4 weeks after MLA\n  * Every 12 weeks (+/- 7 days) for the first year or until disease progression","id":"OG000","title":"Patient 1: Arm A (MRI-guided Laser Ablation)"},{"description":"* MLA is a minimally invasive laser surgery currently FDA approved for cytoreductive treatment of brain tumors, both primary and metastatic. MLA employs a small incision in the scalp and skull, through which a thin laser probe is inserted and guided by MR imaging to the core of a tumor mass where it delivers hyperthermic ablation from the core to the rim.\n* Participants will undergo DCE and DSC-MRI imaging at the following time points:\n\n  * no more than 3 weeks prior to MLA (OPTIONAL)\n  * within approximately 4 days after MLA\n  * 2-4 weeks after MLA\n  * Every 12 weeks (+/- 7 days) for the first year or until disease progression","id":"OG001","title":"Patient 4: Arm A (MRI-guided Laser Ablation)"},{"description":"* MLA is a minimally invasive laser surgery currently FDA approved for cytoreductive treatment of brain tumors, both primary and metastatic. MLA employs a small incision in the scalp and skull, through which a thin laser probe is inserted and guided by MR imaging to the core of a tumor mass where it delivers hyperthermic ablation from the core to the rim.\n* Participants will undergo DCE and DSC-MRI imaging at the following time points:\n\n  * no more than 3 weeks prior to MLA (OPTIONAL)\n  * within approximately 4 days after MLA\n  * 2-4 weeks after MLA\n  * Every 12 weeks (+/- 7 days) for the first year or until disease progression","id":"OG002","title":"Patient 3: Arm A (MRI-guided Laser Ablation)"},{"description":"* MLA is a minimally invasive laser surgery currently FDA approved for cytoreductive treatment of brain tumors, both primary and metastatic. MLA employs a small incision in the scalp and skull, through which a thin laser probe is inserted and guided by MR imaging to the core of a tumor mass where it delivers hyperthermic ablation from the core to the rim.\n* Participants will undergo DCE and DSC-MRI imaging at the following time points:\n\n  * no more than 3 weeks prior to MLA (OPTIONAL)\n  * within approximately 4 days after MLA\n  * 2-4 weeks after MLA\n  * Every 12 weeks (+/- 7 days) for the first year or until disease progression","id":"OG003","title":"Patient 5: Arm A (MRI-guided Laser Ablation)"},{"description":"* MLA is a minimally invasive laser surgery currently FDA approved for cytoreductive treatment of brain tumors, both primary and metastatic. MLA employs a small incision in the scalp and skull, through which a thin laser probe is inserted and guided by MR imaging to the core of a tumor mass where it delivers hyperthermic ablation from the core to the rim.\n* Participants will undergo DCE and DSC-MRI imaging at the following time points:\n\n  * no more than 3 weeks prior to MLA (OPTIONAL)\n  * within approximately 4 days after MLA\n  * 2-4 weeks after MLA\n  * Every 12 weeks (+/- 7 days) for the first year or until disease progression","id":"OG004","title":"Patient 6: Arm A (MRI-guided Laser Ablation)"},{"description":"* MLA is a minimally invasive laser surgery currently FDA approved for cytoreductive treatment of brain tumors, both primary and metastatic. MLA employs a small incision in the scalp and skull, through which a thin laser probe is inserted and guided by MR imaging to the core of a tumor mass where it delivers hyperthermic ablation from the core to the rim.\n* Within 7 days of MLA (range 2-14 days) doxorubicin will be given intravenously on an outpatient basis weekly for 6 weeks at a dose of 25 mg/m\\^2 over 5-30 minutes\n* Following the completion of doxorubin, etoposide 50 mg/m\\^2/day will be given orally for 21 days of each 28-day cycle (treatment can continue up to 24 cycles)\n* Participants will undergo DCE and DSC-MRI imaging at the following time points:\n\n  * no more than 3 weeks prior to MLA (OPTIONAL)\n  * within approximately 4 days after MLA\n  * 2-4 weeks after MLA\n  * every 8 weeks (+/- 7 days) until 2 years have elapsed or disease progression, whichever comes first","id":"OG005","title":"Patient 1: Arm B (MRI-guided Laser Ablation, Doxorubicin, Etoposide)"}],"paramType":"NUMBER","populationDescription":"The one participant in Arm B did not consent to any procedures past 12 months post-MLA. There are time points not included because either the S100B was not detected in the samples or the samples were not collected.","reportingStatus":"POSTED","timeFrame":"Up to 48 weeks post MRI-guided laser heat ablation (Arm A) or up to 2 years post MRI-guided laser heat ablation (Arm B)","title":"Serum Biomarkers of Peritumoral Blood Brain Barrier (BBB) Disruption as Measured by Change in S100B","type":"SECONDARY","unitOfMeasure":"pg/ml"}