Proposal of a Modified Cancer of the Liver Italian Program Staging System Based on the Model for End-Stage Liver Disease for Patients with Hepatocellular Carcinoma Undergoing Loco-Regional Therapy

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Abstract

BACKGROUND

The Cancer of Liver Italian Program (CLIP) system was suggested as the primary staging system for hepatocellular carcinoma (HCC). The model for end-stage liver disease (MELD) is a better prognostic predictor for cirrhotic patients compared to Child-Turcotte-Pugh (CTP) system, which is a parameter used in the CLIP model.

AIM

To investigate the performance of the modified MELD-based CLIP systems.

METHODS

The CTP class in the CLIP model was replaced with MELD score (<10, 10–14, >14; modified CLIP-1), or additional 1 or 2 points were given to patients with MELD score 10–14 or >14, respectively (modified CLIP-2). The modified CLIP systems were compared with the original system in 343 HCC patients undergoing loco-regional therapy.

RESULTS

The original CLIP score in all patients was 1.2 ± 1.1 (range 0–5), compared with 1.4 ± 1.2 (range 0–5) for modified CLIP-1 and 1.7 ± 1.4 (range 0–6) for modified CLIP-2 models (p < 0.001). Using mortality as the endpoint, the area under receiver operating characteristic curve for modified CLIP-2 system was 0.858 compared with 0.812 for modified CLIP-1 (p= 0.013) and 0.782 for original CLIP system (p < 0.001) at 12 months; the area was 0.879, 0.830, and 0.762, respectively (p all < 0.001) at 24 months. Survival analysis showed that the modified CLIP systems had a better long-term discriminatory ability for different score groups.

CONCLUSIONS

The CLIP model is useful to predict the outcome in HCC patients undergoing loco-regional therapy. The MELD-based modified CLIP systems may have a better predictive ability than the original model for cancer staging.

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