Predictive model for systemic recurrence following cisplatin-based neoadjuvant chemotherapy and radical nephroureterectomy for high risk upper tract urothelial carcinoma

Urol Oncol. 2021 Nov;39(11):788.e15-788.e21. doi: 10.1016/j.urolonc.2021.05.037. Epub 2021 Jul 28.

Abstract

Introduction: Neoadjuvant chemotherapy (NAC) is increasingly used prior to radical nephroureterectomy (RNU) for upper tract urothelial carcinoma (UTUC). Systemic recurrence (SR) carries a dismal prognosis. We sought to determine risk factors associated with SR in this setting.

Methods: We evaluated a multi-center database of patients with UTUC who received cisplatin-based NAC before RNU. Final pathology at RNU was dichotomized into ypT<2 vs ypT≥2. Univariable and multivariable analyses were performed to identify risk factors associated with SR. Three groups were defined based on the number of significant risk factors (groups 1, 2, 3 for 0-1, 2, 3 risk factors, respectively) and evaluated for recurrence-free survival (RFS) using the Kaplan-Meier method.

Results: 106 patients were identified between 2004 and 2018. Median age was 67.0 years [IQR = 61-73.3]; 57 (54%) and 49 (46 %) patients received MVAC and GC, respectively. Final pathological stage was ypT<2 in 57 (54%); 23% (24/106) had SR. On univariable analysis, pathological variables on final specimen including ypT≥2, lymphovascular invasion (ypLVI), and nodal involvement were associated with SR. On multivariable analysis, ypLVI OR = 4.1 (95% CI 1.2-13.6; P = 0.024) and pathological nodal involvement OR = 4.5 (95% CI 1.3-15.7; P = 0.017) were predictive of recurrence. Stratifying by the number of risk factors, the 2-year RFS was 95%, 55%, and 18% for groups 1, 2, and 3 respectively (log-rank <0.001).

Conclusion: This model evaluates the risk of SR following NAC and RNU to guide counseling and decision-making after surgery. Adverse pathological variable including ypLVI and nodal involvement, in combination with ypT-stage, are strongly associated with SR.

Keywords: Neoadjuvant chemotherapy; Radical nephroureterectomy; Risk factors; Systemic recurrence; Upper tract urothelial carcinoma.

Publication types

  • Multicenter Study

MeSH terms

  • Aged
  • Antineoplastic Agents / pharmacology
  • Antineoplastic Agents / therapeutic use*
  • Cisplatin / pharmacology
  • Cisplatin / therapeutic use*
  • Humans
  • Male
  • Middle Aged
  • Neoadjuvant Therapy / methods*
  • Neoplasm Recurrence, Local
  • Nephroureterectomy / methods*
  • Risk Factors
  • Urinary Bladder Neoplasms / drug therapy*
  • Urinary Bladder Neoplasms / surgery*

Substances

  • Antineoplastic Agents
  • Cisplatin