ABCB1/P-glycoprotein Expression as Biologic Stratification Factor for Patients With Non Metastatic Osteosarcoma

"PRE SUGERY TREATMENT:~Methotrexate: 12g/m2 (3 cycles) Cisplatinum: 120mg/m2 (3 cycles) Doxorubicin: ADM 75mg/m2 (3 cycles)~POST SURGERY TREATMENT for good responder patients with positive P-GLYCOPROTEIN~Methotrexate 12g/m2 (10 Cycles) Cisplatinum 120mg/m2; Doxorubicin 90mg/m2 MEPACT 2 mg/m2 twice a week for the first 3 months the weekly for the next 6 months (total lenght treatment 44 weeks)~POST SURGERY TREATMENT for poor responder patients with positive P-GLYCOPROTEIN~Methotrexate 12g/m2; Cisplatinum 120mg/m2; Doxorubicin 90mg/m2 ifosfamide 15g/m2 MEPACT 2 mg/m2 twice a week for the first 3 months the weekly for the next 6 months (total lenght treatment 44 weeks)~All the product are used as commercial formulation"

"High grade osteosarcoma who do not over express ABCB1/P-glycoprotein will be treated with a standard 3-drugs regimen~PRE-SUGERY TREATMENT:~Methotrexate: 12g/m2 (3 cycles) Cisplatinum: 120mg/m2 (3 cycles) Doxorubicin: ADM 75mg/m2 (3 cycles)~POST SURGERY TREATMENT:~Methotrexate 12g/m2 (10 cycles) Cisplatinum 120mg/m2; Doxorubicin 90mg/m2~Total lenght 34 weeks~All the product are used as commercial formulation"