Young age as favorable prognostic factor for cancer-specific survival in localized renal cell carcinoma

Urology. 2011 Apr;77(4):842-7. doi: 10.1016/j.urology.2010.09.062. Epub 2011 Jan 22.

Abstract

Objectives: To evaluate the prognostic effect of age in patients with localized renal cell carcinoma (RCC) and investigate the incidence of Xp11 translocation RCC in young patients who developed recurrence.

Methods: From 1990 to 2007, 2403 Japanese patients underwent nephrectomy for presumed RCC at 9 institutions. Of those, 1143 patients had localized RCC (Stage pT1-2N0M0). Their clinical data were retrospectively reviewed. In the present study, 131 patients (11%) were considered young (≤45 years at diagnosis). In the young patients with recurrence, the nephrectomy specimens were immunostained with TFE3 to determine the incidence of Xp11 translocation RCC.

Results: During the median follow-up of 47 months, 3 cancer deaths (2.2%) occurred among young patients and 51 (5.0%) among older patients. The 5-year cancer-specific survival (CSS) rate was significantly better for the younger patients than for the older patients (P = .049). Multivariate analysis showed that age was significantly associated with CSS, as were the pathologic T stage, tumor grade, and symptoms at diagnosis. The hazard ratio of young age was 0.31 (95% confidence interval 0.077-0.87). The recurrence-free survival curves revealed no difference between these 2 groups. Of the 74 patients with recurrence, the CSS after recurrence was significantly better in the younger patients than in the older patients (P = .0010). Of the 8 young patients with recurrence, 4 had Xp11 translocation RCC, and 3 survived for >5 years after recurrence.

Conclusions: Compared with the older patients, the young patients with RCC had similar recurrence-free survival rates but better CSS rates. This might have been because significant numbers of the young patients had Xp11 translocation RCC.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Age Factors
  • Carcinoma, Renal Cell / genetics
  • Carcinoma, Renal Cell / mortality*
  • Child
  • Female
  • Humans
  • Immunohistochemistry
  • Kidney Neoplasms / genetics
  • Kidney Neoplasms / mortality*
  • Lymphatic Metastasis
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Neoplasm Recurrence, Local / genetics
  • Prognosis
  • Retrospective Studies
  • Translocation, Genetic
  • Young Adult