Phase II Open Label, Non-randomized Study of Sorafenib and Everolimus in Relapsed and Non-resectable Osteosarcoma

This is a trial for patients affected by metastatic or relapsed osteosarcoma which progressed after first or further line treatments. In this trial, all patients will be treated until progression or unacceptable toxicity with sorafenib and everolimus. The treatment with sorafenib and everolimus aimed to obtain a 50% rate of patients free from further progression of the disease after 6 months from study entry.