A Clinical Study of Surufatinib Combined With Chemotherapy as Neoadjuvant Treatment in Osteosarcoma

"Surufatinib: (1) for patients aged \> 21 years old and ≤70 years old, surufatinib 200 mg, qd, oral, continuous administration; (2) For patients aged ≥2 years and ≤21 years, starting from the low dose of patient BSA (body surface area), Stevenson's formula developed according to the Chinese population was used: BSA = 0.0061H+0.0128W-0.1529 (H: BSA = 0.0061H+0.0128W-0.1529). Height /cm; W: body weight /kg); Chemotherapy : 1) Doxorubicin 60 mg/m2, or liposome doxorubicin 45mg/ m2, day 17; 2) Cisplatin: 100 mg/m2, day 15; 3) Ifosfamide; 2.5g/m2, day 8-12;~The above drugs were used in turn, and 30 days were regarded as a treatment cycle."

"1\) High-dose methotrexate : 8-12 g/m2 (MTX chemotherapy requires blood drug concentration monitoring), day 1 and 8; 2) Doxorubicin 60 mg/m2 or liposomal doxorubicin 45mg/ m2, day 17; 3) Cisplatin: 100 mg/m2, day 15;4) Ifosfamide; 2.5 g/m2, day 8-12.~The above drugs were used in turn, and 30 days were regarded as a treatment cycle."