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About
Relapsed and/or refractory neuroblastoma, osteosarcoma, Ewing sarcoma and melanoma are considered difficult to treat and cure. For this study we are testing the use of a new experimental (investigational) antibody called hu14.18K322A. GD2 is expressed on the surface of most of these tumor types.
Two schedules of hu14.18K322A antibody will be evaluated in this study, (1) daily for four consecutive days schedule every 28 days and (2) once weekly for 4 weeks schedule every 28 days. Approximately 25-40 participants will be required to define the maximum tolerated dose for each schedule. Participants will continue on treatment for a maximum of 4 to 8 courses or until one or more of the criteria for off-treatment are met.
Full description
SJGD2 is a Phase I dose finding study. The primary purpose of this phase I study is to determine the maximum tolerated dose (MTD) and dose-limiting toxicity of the humanized monoclonal anti-GD2 antibody, hu14.18K322A, in research participants with refractory or relapsed neuroblastoma or melanoma (Parts A and B) or osteosarcoma or Ewing sarcoma (Part C).
Initially, in Part A, one research participant will be treated at the lowest dose level of hu14.18K322A antibody [2 mg/m^2 daily for 4 consecutive days every 28 days (1 course)], and if no toxicity is observed then the next participant will be treated at the next dose level. This is continued until the first instance of biological activity (in the form of grade 2 side effects) is observed and from that point on a traditional phase I study design will be followed. A maximum of 4 courses may be given.
Part B: Hu14.18K322A antibody will be administered intravenously (IV) at a starting dose of 50 mg/m^2/dose weekly for 4 doses per course. One course is considered 28 days. A maximum of 8 courses may be given.
Part C: Hu14.18K322A antibody will be administered to 6 patients each with refractory/recurrent osteosarcoma at a maximum tolerated dose (MTD) of 60 mg/m^2 daily for 4 consecutive days every 28 days (Part C1). A cohort of patients with refractory/recurrent osteosarcoma or Ewing sarcoma will also be administered hu14.18K322A antibody at starting dose of 40 mg/m^2/dose weekly for 4 doses per course (Part C2). Participants will continue on treatment for a maximum of 8 courses.
Secondary objectives include:
Enrollment
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Inclusion criteria
Diagnosis:
Age: ≤ 21 years of age at the time of enrollment (i.e. participants are eligible until they reach their 22nd birthday).
Does not have a clinically significant neurologic deficit or objective peripheral neuropathy (greater than or equal to grade 2). Peripheral (sensory or motor) neuropathy related to limb sparing procedure or amputation is allowed.
Life expectancy: at least 8 weeks.
Organ Function: Must have adequate organ and marrow function
Performance status: Karnofsky ≥ 50 for > 10 years of age; Lansky ≥ 50 for children < 10 years of age.
Prior Therapy: Patient must have fully recovered from the acute toxic effects of all prior therapy prior to enrolling on study.
Patients may have had prior CNS metastasis providing: CNS disease has been previously treated and CNS disease has been clinically stable for 4 weeks prior to study entry (assessment must be made by CT or MRI).
Written informed consent following institutional and federal guidelines.
Exclusion criteria
Primary purpose
Allocation
Interventional model
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50 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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