| Summary: | Abstract Background The clinical value of the controlling nutritional status (CONUT) score in hepatocellular carcinoma (HCC) has increased. The aim of this meta-analysis was to systematically review the association between the CONUT score and outcomes in patients undergoing hepatectomy for HCC. Methods Embase, Medline Ovid, Web of Science, Cochrane CENTRAL, and Google Scholar were systematically searched. Random effects meta-analyses were conducted to examine the prognostic value of the CONUT score in HCC patients. Results A total of five studies including 4679 patients were found to be eligible and analyzed in the meta-analysis. The CONUT score was significantly associated with overall survival (HR 1.78, 95%CI = 1.20–2.64, P = 0.004, I 2 = 79%), recurrence-free survival (HR 1.34, 95%CI = 1.17–1.53, P < 0.001, I 2 = 16%) and postoperative major complications (OR 1.85, 95%CI: 1.19–2.87, P = 0.006, I 2 = 72%) in HCC patients. Moreover, the CONUT score was associated with the Child–Pugh classification, liver cirrhosis, ICGR15, and tumor differentiation. However, it was not associated with tumor size, tumor number, and microvascular invasion. Conclusions The CONUT score is an independent prognostic indicator of the prognosis and is associated with postoperative major complications and hepatic functional reserve in HCC patients.
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