At a glance
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A Phase II Trial of Avelumab, A Fully Human Antibody That Targets Cells Expressing PD-L1, in Patients With Recurrent or Progressive Osteosarcoma
In Brief
A Phase 2 clinical trial evaluating Avelumab and Questionnaires for Osteosarcoma. Completed, enrolled 19 participants across 4 sites.
Detailed Summary
This clinical trial seeks to determine if avelumab will be effective in facilitating removal of all gross tumor in the event of a relapse of osteosarcoma in pediatric patients. Avelumab will be evaluated using dosing that has previously been determined in adult studies. Primary Objectives: * To estimate the response rate to 4 cycles of avelumab in patients with recurrent or progressive osteosarcoma. * To estimate the 16-week progression free survival of patients with recurrent or progressive osteosarcoma after treatment with avelumab. Secondary Objective: * To describe the toxicities associated with the administration of avelumab in patients with recurrent or progressive osteosarcoma. * To assess the quality of life of patients with recurrent or progressive osteosarcoma undergoing treatment with avelumab, and to explore relationships between clinical factors and patient-reported health-related quality of life (HRQOL) outcomes. Exploratory Objectives: * To explore factors associated with response in patients treated with avelumab after recurrent or progressive osteosarcoma (e.g. tumor PD-L1 expression). * To measure parameters of immune activation including subsets of peripheral blood mononuclear cells (PBMCs) and serum markers of immune activation. * To evaluate the role of T-cells in immune checkpoint blockade via measures of cell proliferation, co-inhibitory receptor expression on CD8 T cells, T cell repertoire, and epigenetic programming.
Study Details
Timeline
Interventions
Patients will be administered avelumab at a dose of 10 mg/kg intravenously (IV) over 60 minutes on days 1 and 15 of each cycle, with a cycle lasting 28 days. Patients will receive avelumab every 2 weeks in cycles of 28 days for up to 24 months, or 26 cycles.
To assess quality of life, patients will complete questionnaires at four time points.