Albumin-bilirubin index and platelet-albumin-bilirubin index contribute to identifying survival benefit candidates in patients with hepatocellular carcinoma and Child-Pugh grade A undergoing transcatheter arterial chemoembolization with sorafenib treatment

BACKGROUND: Combined therapy of transcatheter arterial chemoembolization (TACE) with sorafenib is used for a large number of patients with intermediate-stage or advanced-stage hepatocellular carcinoma (HCC), but its implementation is limited by the evaluation of pre-treatment liver function reserve. This study aimed to validate the performance of the albumin-bilirubin index (ALBI) and platelet-albumin-bilirubin index (PALBI) in predicting survival benefits in patients with HCC and Child-Pugh grade A receiving TACE combined with sorafenib treatment. METHODS: From 2004 to 2018, 418 patients with intermediate/advanced-stage HCC and Child-Pugh grade A receiving TACE combined with sorafenib treatment were retrospectively enrolled. The predictive performance of ALBI and PALBI was explored by survival analysis and receiver operating characteristic curve (ROC) analysis. RESULTS: The median overall survival (mOS) was 24 and 12 months in patients with ALBI grade 1 and grade 2, respectively. The mOS of patients with PALBI grade 1, grade 2, and grade 3 was 23, 16, and 7 months, respectively. The multivariate analysis showed that ALBI grade 2 [hazard ratio (HR) =1.39, 95% confidence interval (CI): 1.11–1.74] and PALBI grade 3 (HR =3.72, 95% CI: 2.26–6.06) were associated with unfavorable prognosis. The ROC analysis revealed that ALBI and PALBI scores had better prediction performance compared with the Child-Pugh score. Subgroup analysis confirmed that by using ALBI or PALBI, patients could be stratified into subgroups with different liver function reserves and distinctive prognosis, regardless of Barcelona Clinic Liver Cancer (BCLC) stage, combination modality, or α-fetoprotein (AFP) levels. CONCLUSIONS: Both ALBI and PALBI could predict prognosis in patients with HCC and Child-Pugh grade A receiving TACE and sorafenib. Patients with ALBI or PALBI grade 1 harbored a more favorable survival outcome compared with those with ALBI or PALBI grade 2–3, and hence should be recommended as the best candidates for TACE combined with sorafenib treatment.