4.5 Article

Additional value of interleukin-6 level to predict histopathological features of hepatocellular carcinoma before liver transplantation

Journal

CYTOKINE
Volume 169, Issue -, Pages -

Publisher

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cyto.2023.156286

Keywords

Liver transplantation; Interleukin 6; Hepatocellular carcinoma; Recurrence; Inflammatory biomarkers; Transplant oncology

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This study aimed to evaluate the predictive value of IL-6 on histopathological features and recurrence risk of HCC on explant, as well as its additional value to other scores and inflammatory markers at the time of transplantation. The results showed that high IL-6 levels at transplantation were associated with adverse histological features and increased risk of recurrence in HCC patients. Therefore, IL-6 level can serve as an independent predictor for prognosis in HCC.
Background & Aims: Inflammatory biomarkers are increasingly used as outcome predictors in the field of oncology and liver transplantation for HCC, but no study has shown the prognostic value of IL6 after LT. The goal of this study was to evaluate the predictive value of IL-6 on histopathological features of HCC on explant, its predictive value on recurrence risk and its additional value to other scores and inflammatory markers at the time of transplantation.Methods: From 2009 to 2019, all adults transplanted with a first liver graft and diagnosed with HCC on the explant analysis were retrospectively included (n = 229). Only patients who had a pre-LT IL6 level determination were analysed in this study (n = 204).Results: High IL-6 level at transplantation was associated with a significantly higher risk of vascular invasion (15% vs 6%; p = 0.023), microsatellitosis (11% vs 3%; p = 0.013), lower rate of histological response both in terms of complete response (2% vs 14%, p = 0.004) and of necrosis (p = 0.010).Patients with pre-LT IL-6 level > 15 ng/ml had a lower overall and cancer-specific survival (p = 0.013). Recurrence-free survival was lower in patients with IL-6 > 15 ng/ml with a 3-year recurrence-free survival of 88% versus 78% (p = 0.034). IL6 levels were significantly higher in patients with early recurrence compared to patients without (p = 0.002) or with late recurrence (p = 0.044).Conclusions: IL6 level at transplantation is an independent predictor of pejorative histological features of HCC and is associated to the risk of recurrence.

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