Response to Pazopanib in Patients With Relapsed Osteosarcoma

J Pediatr Hematol Oncol. 2020 May;42(4):e254-e257. doi: 10.1097/MPH.0000000000001375.

Abstract

Axial skeleton primary tumor, metastatic disease at presentation, incomplete surgical resection, and <90% tumor necrosis have all been known to influence prognosis adversely in osteosarcoma. Relapse of osteosarcoma, typically occurring within the first 18 months of therapy, with an incidence rate of 50% is treated with surgery, chemotherapy, and targeted therapy. Here, we discuss 2 patients treated with pazopanib, a multi-tyrosine kinase inhibitor presently approved to treat renal cell carcinoma and soft tissue sarcomas. Case 1 achieved positive response and remains on pazopanib. Case 2 sustained gastrointestinal toxicity requiring suspension of drug, despite achieving stable disease.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Bone Neoplasms / drug therapy*
  • Bone Neoplasms / metabolism
  • Bone Neoplasms / pathology
  • Female
  • Humans
  • Indazoles
  • Male
  • Neoplasm Recurrence, Local / drug therapy*
  • Neoplasm Recurrence, Local / metabolism
  • Neoplasm Recurrence, Local / pathology
  • Osteosarcoma / drug therapy*
  • Osteosarcoma / metabolism
  • Osteosarcoma / pathology
  • Pyrimidines* / administration & dosage
  • Pyrimidines* / adverse effects
  • Sulfonamides* / administration & dosage
  • Sulfonamides* / adverse effects

Substances

  • Indazoles
  • Pyrimidines
  • Sulfonamides
  • pazopanib