Combination of sarcopenia and prognostic nutritional index to predict long-term outcomes in patients undergoing initial hepatectomy for hepatocellular carcinoma

Abstract

Objective: To determine if preoperative sarcopenia and prognostic nutritional index (PNI) could accurately predict the postoperative outcomes of patients with hepatocellular carcinoma (HCC) undergoing initial hepatectomy. Methods: Three hundred three patients who underwent curative hepatectomy for HCC between January 2010 and August 2021 were enrolled and their data were retrospectively analyzed. Sarcopenia was determined from computed tomography images obtained 3 weeks prior to surgery, and PNI was calculated from preoperative albumin and whole lymphocyte count data in receiver operating characteristic (ROC) curve analysis, with a cutoff value of 46.2 to categorize high and low groups. Results: One hundred six (35%) patients had sarcopenia prior to surgery. Kaplan–Meier analysis revealed that sarcopenia and low PNI were associated with significantly worse overall survival (OS) compared with no sarcopenia and high PNI, respectively (P = 0.023 and P = 0.035, respectively). In addition, patients with sarcopenia had worse OS than those without sarcopenia in the high and low PNI groups (P = 0.058 and P = 0.038, respectively). Sarcopenia (hazard ratio [HR] 1.66; 95% confidence interval [CI] 1.00–2.76; P = 0.048) and PNI ≤46.2 (HR 1.96; 95% CI 1.17–3.27; P = 0.011) were independent prognostic factors on multivariate analysis, and combined sarcopenia and PNI had a higher AUC value (AUC = 0.722, P < 0.001) than either one alone in ROC analysis. Conclusion: Combined sarcopenia and PNI as a prognostic marker can better predict the postoperative prognostic outcomes of HCC patients following hepatectomy than either sarcopenia or PNI alone.

Keywords

• Hepatectomy
• Hepatocellular carcinoma
• Postoperative outcome
• Prognostic nutritional index
• Sarcopenia