The prognostic nutritional index predicts the biochemical recurrence of patients treated with robot-assisted laparoscopic radical prostatectomy

Prostate. 2022 Feb;82(2):221-226. doi: 10.1002/pros.24263. Epub 2021 Nov 16.

Abstract

Objective: To evaluate the prognostic nutritional index (PNI) in predicting the biochemical recurrence (BCR) of patients treated with robot-assisted laparoscopic radical prostatectomy (RALP).

Methods: The clinical data of 136 patients treated with RALP in the Department of Urology, The Third Xiangya Hospital of Central South University were retrospectively analyzed. The endpoint of observation was BCR. The area under the receiver operating characteristic (ROC) curve was evaluated to determine the optimal cutoff value of PNI. The correlation of the PNI with BCR was estimated using Kaplan-Meier analysis and Cox proportional hazards model.

Results: The optimal cutoff value of the PNI was 46.03 according to the ROC curve. (95% confidence interval: 0.604-0.805, Youden index = 0.401, sensitivity = 82.5%, specificity = 57.6%, p < 0.01). Multivariate Cox analysis showed that clinical staging, prostate-specific antigen, and PNI were independent prognostic factors for predicting BCR in patients treated with RALP.

Conclusion: PNI is an independent prognostic factor for predicting BCR in patients treated with RALP. The incorporation of the PNI into risk assessments may provide additional prognostic information.

Keywords: biochemical recurrence; prognostic factors; prognostic nutritional index; robot-assisted laparoscopic radical prostatectomy.

MeSH terms

  • Aged
  • Biomarkers / blood
  • China / epidemiology
  • Humans
  • Male
  • Neoplasm Recurrence, Local* / blood
  • Neoplasm Recurrence, Local* / diagnosis
  • Neoplasm Staging
  • Nutrition Assessment*
  • Predictive Value of Tests
  • Prognosis
  • Prostate-Specific Antigen / blood*
  • Prostatectomy* / adverse effects
  • Prostatectomy* / methods
  • Prostatic Neoplasms* / blood
  • Prostatic Neoplasms* / epidemiology
  • Prostatic Neoplasms* / pathology
  • Prostatic Neoplasms* / surgery
  • Risk Assessment / methods
  • Robotic Surgical Procedures* / adverse effects
  • Robotic Surgical Procedures* / methods
  • Sensitivity and Specificity

Substances

  • Biomarkers
  • Prostate-Specific Antigen