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Clinical Trial 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.

Clinical Trial Description

This is a Phase 2 study using a traditional Simon two-stage design. Patients 12 years or greater with recurrent/refractory osteosarcoma 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. Progression free survival and response to therapy after 4 cycles of treatment will be assessed. In addition, the toxicity profile of avelumab in this population will be closely monitored. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT03006848
Study type Interventional
Source St. Jude Children's Research Hospital
Status Active, not recruiting
Phase Phase 2
Start date February 16, 2017
Completion date January 31, 2023

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