Number of Participants With Unacceptable Toxicity After all patients have completed therapy, up to 1 year after last patient is enrolled [clinicaltrials_resource:e84ef67fbecde36ee6e991b53387a948]

Objective: To study the feasibility of combining: 1) bevacizumab with cisplatin, doxorubicin, and high-dose methotrexate (MAP) in patients with localized resectable osteosarcoma; and 2) bevacizumab with MAP and ifosfamide, and etoposide in patients with unresectable or metastatic osteosarcoma. The target unacceptable toxicity is defined as grade 4 hypertension, proteinuria, or bleeding excluding petechiae/purpura, grade 3/4 thrombosis/embolism excluding catheter-related thrombosis. The unacceptable toxicity for major wound complication is defined as grade 2, 3, or 4 major wound complications. A six-stage group sequential stopping rule was developed for monitoring unacceptable toxicity.

Number of Participants With Unacceptable Toxicity After all patients have completed therapy, up to 1 year after last patient is enrolled [clinicaltrials_resource:e84ef67fbecde36ee6e991b53387a948]

Objective: To study the feasibility of combining: 1) bevacizumab with cisplatin, doxorubicin, and high-dose methotrexate (MAP) in patients with localized resectable osteosarcoma; and 2) bevacizumab with MAP and ifosfamide, and etoposide in patients with unresectable or metastatic osteosarcoma. The target unacceptable toxicity is defined as grade 4 hypertension, proteinuria, or bleeding excluding petechiae/purpura, grade 3/4 thrombosis/embolism excluding catheter-related thrombosis. The unacceptable toxicity for major wound complication is defined as grade 2, 3, or 4 major wound complications. A six-stage group sequential stopping rule was developed for monitoring unacceptable toxicity.