Patients have to be aged 18 years or older and have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1; life expectancy of at least 3 months;and adequate bone-marrow, liver, and renal function at the start of the trial. Patients could not participate if they had previously received sorafenib or had uncontrolled medical disorders. All patients receive best supportive care, excluding other investigational antitumour agents or antineoplastic chemotherapy, hormonal therapy, or immunotherapy.Patients receive oral donafenib 200mg (CM4307) of each 4 week cycle until disease progression,death, unacceptable toxic effects, withdrawal of consent by the patient,or decision by the treating physician that discontinuation would be in the patient's best interest.The primary endpoint is safety.The second endpoint is progression-free survival.