Gender-specific effect of smoking on upper tract urothelial carcinoma outcomes

Michael Rink, Evanguelos Xylinas, Quoc Dien Trinh, Yair Lotan, Vitaly Margulis, Jay D. Raman, Margit Fisch, Richard K. Lee, Felix K. Chun, Joual Abdennabi, Christian Seitz, Armin Pycha, Alexandre R. Zlotta, Pierre I. Karakiewicz, Marko Babjuk, Douglas S. Scherr, Shahrokh F. Shariat

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16 Scopus citations

Abstract

Objective To evaluate the gender-specific differential effects of smoking habits and cumulative smoking exposure on outcomes in patients with upper tract urothelial carcinoma (UTUC) treated with radical nephroureterectomy (RNU). Patients and Methods A total of 864 consecutive patients, comprising 553 (64%) men and 311 (36%) women, from five international institutions underwent RNU without neoadjuvant chemotherapy. Smoking history included smoking status (current, former or never), quantity of cigarettes per day (CPD), smoking duration in years and years since smoking cessation. Cumulative smoking exposure was categorized as light short-term (≤19 CPD and ≤19.9 years), moderate (all combinations except light short-term and heavy long-term), and heavy long-term (≥20 CPD and ≥20 years). Uni- and multivariable competing risk regression models were used to assess the associations with outcomes. Results Overall, 244 (28.2%), 297 (34.4%) and 323 (37.4%) patients were never, former and current smokers, respectively. There were no differences in smoking status, quantity and duration between the genders. In female ever smokers, 30 (9.6%), 121 (38.9%) and 67 (21.5%) were light short-term, moderate and heavy long-term smokers, respectively. Compared with men, female current smokers were more likely to experience disease recurrence in univariable analysis (P = 0.013). In heavy long-term smokers, female gender was significantly associated with disease recurrence (hazard ratio [HR] 1.7; P = 0.03) and cancer-specific mortality (HR 2.0; P = 0.009) in multivariable analysis that adjusted for standard clinico-pathological features. In female patients only, smoking quantity, duration and cumulative exposure were associated with disease recurrence and cancer-specific mortality on multivariable analyses (P ≤ 0.025). Conclusions The impact of smoking on UTUC outcomes after RNU is gender-specific. Females who are current and heavy long-term smokers experience worse outcomes than their male counterparts. Further research is needed to elucidate the molecular mechanisms underlying the gender-specific differential effect of smoking on UTUC outcomes.

Original languageEnglish (US)
Pages (from-to)623-637
Number of pages15
JournalBJU international
Volume112
Issue number5
DOIs
StatePublished - Sep 1 2013

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Keywords

  • dose relationship
  • gender
  • radical nephroureterectomy
  • recurrence
  • smoking
  • survival
  • transitional cell carcinoma
  • upper urinary tract
  • urothelial carcinoma

ASJC Scopus subject areas

  • Urology

Cite this

Rink, M., Xylinas, E., Trinh, Q. D., Lotan, Y., Margulis, V., Raman, J. D., Fisch, M., Lee, R. K., Chun, F. K., Abdennabi, J., Seitz, C., Pycha, A., Zlotta, A. R., Karakiewicz, P. I., Babjuk, M., Scherr, D. S., & Shariat, S. F. (2013). Gender-specific effect of smoking on upper tract urothelial carcinoma outcomes. BJU international, 112(5), 623-637. https://doi.org/10.1111/bju.12014