All patients were treated with lenvatinib every day and sintilimab intravenously once every 3 wk. Moreover, TACE was performed every 4-6 wk if there was obvious hepatic arterial blood supply to the HCC lesion according to contrast-enhanced abdominal magnetic resonance imaging or computed tomography combined with changes in tumour indicators such as alpha-fetoprotein. Patients received 12 mg of lenvatinib orally once a day for body weight ≥ 60 kg or 8 mg for body weight < 60 kg. Sintilimab (200 mg) was administered intravenously each time. Patients were administered TKIs and PD-1 antibodies within 3 d after the start of TACE.