Near Complete Response to Platinum-based Systemic Chemotherapy in High-risk Upper Tract Urothelial Carcinoma With an ERBB2 Gene Mutation: A Case Report

Urology. 2024 Feb:184:75-78. doi: 10.1016/j.urology.2023.11.019. Epub 2023 Dec 3.

Abstract

In bladder urothelial carcinoma, ERBB2 mutations have been associated with favorable response to platinum-based neoadjuvant chemotherapy. However, this association has not been reported in upper tract urothelial carcinoma (UTUC). We describe an excellent response to cisplatin-based chemotherapy in metastatic UTUC with an ERBB2 mutation. Our patient is a 54-year-old female with metastatic UTUC who received systemic cisplatin and gemcitabine. Postchemotherapy imaging demonstrated decreased size of pyelocaliceal mass and decreased retroperitoneal adenopathy compared to initial imaging. Surgical pathology from consolidative resection showed 3 mm residual renal tumor and no viable lymph node disease. Genomic testing demonstrated an ERBB2 gain of function mutation.

Publication types

  • Case Reports

MeSH terms

  • Carcinoma, Transitional Cell* / drug therapy
  • Carcinoma, Transitional Cell* / genetics
  • Cisplatin / therapeutic use
  • Female
  • Genes, erbB-2
  • Humans
  • Middle Aged
  • Mutation
  • Neoplasm, Residual
  • Pathologic Complete Response
  • Platinum
  • Receptor, ErbB-2 / genetics
  • Urinary Bladder Neoplasms*

Substances

  • Platinum
  • Cisplatin
  • ERBB2 protein, human
  • Receptor, ErbB-2