Arsenic Trioxide Combined With Chemotherapy for the Treatment of p53-mutated Pediatric Cancer

Patients should be treated with the corresponding first-line chemotherapy regimen first, for example: Neuroblastoma: CAV (cyclophosphamide, pinarubicin, vincristine), PVP (cisplatin, etoposide) ,CT (cyclophosphamide, topotecan).If patients was evaluted as PD/SD after treatments, arsenic trioxide (ATO) will be administered 0.18mg/kg per day over six hours IV daily for ten days in combination with previous chemotherapy regimen on the third day of each treatment cycle. Other pediatric tumors with TP53 mutations not mentioned above will have similar treatment regimens. If the efficacy of the conventional standard chemotherapy regimen is evaluated as PD/SD, then the next course of treatment will be combined with ATO on the basis of the standard chemotherapy regimen.