title: Use of the University of California Los Angeles Integrated Staging System (UISS) to predict survival in localized renal cell carcinoma in an Asian population.
abstract: OBJECTIVE
  To evaluate the applicability of the University of California Los Angeles Integrated Staging System (UISS) in predicting the prognosis of Chinese patients with localized renal cell carcinoma after radical nephrectomy, with reference to that reported by Patard et al in an international multicenter study (J Clin Oncol 2004, 22:3316-3322).
  
  
  METHODS
  One hundred and twenty-eight Chinese patients with localized renal cell carcinoma were stratified into low risk (LR), intermediate risk (IR) and high risk (HR) groups according to the UISS, based on the TMN staging and Fuhrman grading of the tumor and the Eastern Cooperative Oncology Group performance status of the patients. The survival curves of each risk group were then calculated.
  
  
  RESULTS
  The number of patients in the LR, IR and HR was 24 (18.8%), 94 (73.4%) and 10 (7.8%) respectively. The estimated 2-year survival rates were 100%, 89.9% and 100% for the LR, IR and HR groups respectively. Whereas the estimated 5-year survival rates were 93.3%, 72.4% and 80% for the LR, IR and HR groups respectively. The LR and IR patients had comparable 2-year and 5-year estimated survival rates with those reported by Patard et al. However, the estimated survival rate for HR patients was better than that reported.
  
  
  CONCLUSIONS
  UISS provided a valuable tool in predicting the survival of Chinese patients with localized renal cell carcinoma of LR and IR groups, as reported in other international centers. Further large scale study may be needed to confirm the applicability in HR population.
authors.affiliation: Department of Surgery, Chinese University of Hong Kong, 4th floor, Prince of Wales Hospital, , Shatin, Hong Kong, Hong Kong. ngcf@surgery.cuhk.edu.hk
authors.forename: Chi-Fai
authors.initials: CF
authors.lastname: Ng
authors.forename: Siu-Ho
authors.initials: SH
authors.lastname: Wan
authors.forename: Annie
authors.initials: A
authors.lastname: Wong
authors.forename: Fernand M M
authors.initials: FM
authors.lastname: Lai
authors.forename: Pun
authors.initials: P
authors.lastname: Hui
authors.forename: Chi-Wai
authors.initials: CW
authors.lastname: Cheng
mesh_terms: D002292:Carcinoma, Renal Cell / Q000401:mortality* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007680:Kidney Neoplasms / Q000401:mortality* / Q000473:pathology / Q000601:surgery; D009367:Neoplasm Staging; D009392:Nephrectomy; D018570:Risk Assessment; D016019:Survival Analysis