title: Onodera's Prognostic Nutritional Index as an Independent Prognostic Factor in Clear Cell Renal Cell Carcinoma.
abstract: To evaluate the relationship between the Onodera Prognostic Nutritional Index (OPNI) and overall survival, as well as recurrence-free survival, in clear cell renal cell carcinoma (ccRCC) patients following nephrectomy.
  
  
  
  Three hundred forty-one patients who underwent nephrectomy for ccRCC were analyzed. The optimum OPNI cutoff score of 44.7 was determined by receiver operating characteristic analysis and patients were placed in either the low or high OPNI group, with OPNI values of ≤44.7 and ≥44.8, respectively. Kaplan-Meier analysis was performed to evaluate the univariate impact of the OPNI groups on overall survival and recurrence-free survival. OPNI's association with overall survival and recurrence-free survival, with adjustments for other patient and tumor qualities, was assessed with univariate and multivariate Cox regression analysis.
  
  
  
  Median (95% CI) overall survival times for the low and high OPNI groups were 21.1 months and 37.9 months, respectively. OPNI was determined to be an independent prognostic factor in multivariate analysis, and after controlling for patient and tumor characteristics, the low OPNI group experienced a 1.67-fold (hazard ratio: 1.67, 95% confidence interval: 1.05-2.68) increased risk of overall mortality.
  
  
  
  Preoperative OPNI is a valuable independent prognostic indicator of overall survival and recurrence-free survival in patients with ccRCC following nephrectomy.
authors.affiliation: Department of Urology, Emory Winship Cancer Institute, Emory University, Atlanta, GA.
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Broggi
authors.affiliation: Department of Urology, Emory Winship Cancer Institute, Emory University, Atlanta, GA.
authors.forename: Dattatraya
authors.initials: D
authors.lastname: Patil
authors.affiliation: Department of Urology, Emory Winship Cancer Institute, Emory University, Atlanta, GA.
authors.forename: Yoram
authors.initials: Y
authors.lastname: Baum
authors.affiliation: Department of Urology, Emory Winship Cancer Institute, Emory University, Atlanta, GA.
authors.forename: Peter T
authors.initials: PT
authors.lastname: Nieh
authors.affiliation: Department of Urology, Emory Winship Cancer Institute, Emory University, Atlanta, GA.
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Alemozaffar
authors.affiliation: Department of Urology, Emory Winship Cancer Institute, Emory University, Atlanta, GA.
authors.forename: John G
authors.initials: JG
authors.lastname: Pattaras
authors.affiliation: Department of Urology, Emory Winship Cancer Institute, Emory University, Atlanta, GA.
authors.forename: Kenneth
authors.initials: K
authors.lastname: Ogan
authors.affiliation: Department of Urology, Emory Winship Cancer Institute, Emory University, Atlanta, GA. Electronic address: vmaster@emory.edu.
authors.forename: Viraj A
authors.initials: VA
authors.lastname: Master
mesh_terms: D002292:Carcinoma, Renal Cell / Q000401:mortality* / Q000601:surgery*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000401:mortality* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy; D015596:Nutrition Assessment; D011379:Prognosis; D015996:Survival Rate