The optimal cut-off value of the preoperative prognostic nutritional index for the survival differs according to the TNM stage in hepatocellular carcinoma

Abstract

Purpose

To establish the optimal cut-off value of the preoperative prognostic nutritional index (PNI) for prognosis according to the Tumor Node Metastasis (TNM) stage of hepatocellular carcinoma (HCC) after curative resection.

Methods

This retrospective study reviewed the records of 375 patients. The optimal cut-off value of the PNI was established according to the TNM stage, and overall survival was compared between the low and high PNI groups.

Results

The optimal cut-off value of the PNI decreased with increasing TNM stage, with 52, 47, and 43 patients having stage I, II, and III HCC, respectively. A low preoperative PNI predicted a poorer overall survival than did a high PNI for stage I (P < 0.001) and II (P = 0.002), but not stage III disease (P = 0.052). Multivariate analysis revealed that the preoperative PNI was an independent predictor of overall survival for stage I and II HCC (hazard ratios: 6.96 and 3.57, P = 0.001 and P = 0.001, respectively).

Conclusions

The findings of this study show that the optimal cut-off value for the PNI for prognosis differs among the TNM stages and that the preoperative PNI is a favorable prognostic factor for stage I HCC.

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