1) The patients in the C group received intravenous camrelizumab 200 mg every 3 weeks (Jiangsu Hengrui Pharmaceuticals Co., Ltd., Jiangsu, China).
2) The patients in the C+A group received intravenous camrelizumab 200 mg every 3 weeks plus oral apatinib 850 mg daily (Jiangsu Hengrui Pharmaceuticals Co., Ltd., Jiangsu, China).
3) The patients in the C+L group received the intravenous camrelizumab 200 mg every 3 weeks plus oral lenvatinib 12 mg daily (for bodyweight ≥60 kg)/lenvatinib 8 mg daily (for bodyweight <60 kg).
4) The patients in the C+S group received the intravenous camrelizumab 200 mg every 3 weeks plus oral sorafenib 400 mg bi-daily (Bayer Pharma AG, Leverkusen, Germany).
Patients received immunotherapy for at least 2 cycles and targeted therapy for at least 42 days. All patients were routinely checked for blood routine, liver and kidney function, electrolytes, coagulation function, thyroid function, myocardial enzyme profile, electrocardiogram, and cardiac ultrasound before each cycle of treatment, and chest and abdomen enhanced CT was performed every two cycles to evaluate the efficacy.