TACE Combined With ICIs Plus MTT After 125I Irradiation Stent Placement in HCC With Main PVTT.

Inclusion Criteria: 1. age ≥18 years old; (2) diagnosis of HCC is confirmed through histological or cytological analysis, as well as clinical features; (3) histologically confirmed or imaging-diagnosed PVTT extending to the main portal vein (Vp4); (4) including at least one measurable intrahepatic lesion according to the Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1; (5) Eastern Cooperative Oncology Group (ECOG) performance status of ≤2; (6) patients received first-line treatment with either ICIs-MTT or an ISP-containing quadruple combination within eight weeks (In the ICIs-MTT group, MTT was administered alongside ICIs. In the ISP-containing quadruple, TIT and ICIs-MTT were given after stent placement and portal vein recanalization, either simultaneously or within eight weeks before or after the ICIs-MTT therapy). Exclusion Criteria: 1. patients with extrahepatic metastases; (2) a history of or concurrent malignancies; (3) patients underwent prior systemic treatments or locoregional therapies, including surgery, radiation therapy, hepatic arterial embolization, TACE, hepatic arterial infusion, radiofrequency ablation, percutaneous ethanol injection, and cryoablation, within three months before the initiation of ISP.; (4) Child-Pugh grade C liver function, a Child-Pugh score of 3 for ascites, or the presence of overt hepatic encephalopathy; (5) incomplete outcome data or missing essential baseline factors for analysis.