RecruitingDrug trialApatinib Mesylate Combined With IT Regimen for the Treatment of Recurrent or Refractory Pediatric Neuroblastoma: A Single-arm, Phase I/II,Multi-center, Clinical Study.The survival rate of recurrent and refractory pediatric neuroblastoma is low and the prognosis is poor. Apatinib mesylate is a highly selective small-molecule vasoendothelial growth factor receptor-2 (VEGFR-2) tyrosine kinase inhibitor. Apatinib mesylate has been shown to be safe and effective in recurrent or refractory pediatric neuroblastoma in Sun Yat-sen University Cancer Center. Apatinib mesylate combined with IT regimen is expected to further improve the efficacy and survival rate of recurrent or refractory pediatric neuroblastoma.