Sintilimab Combined With Anlotinib as Second or Further-line Therapy for ED-SCLC

Small cell lung cancer (SCLC) accounts for 10-15% of lung cancer. More than 70% of SCLC patients are diagnosed with advanced stage (ED-SCLC) at diagnosis. ED-SCLC is highly chemo-sensitive, the first-line treatment is platinum-containing double-drug chemotherapy. Although ED-SCLC is highly sensitive to chemotherapy and the objective response rate (ORR) of first-line chemotherapy is as high as 60-80%, the progression-free survival (PFS) is very short, and there is a lack of effective second-line treatment. The median overall survival (OS) of patients is only 10 months, and the 2-year survival rate is about 6%.