Efficacy and Biomarkers of the Second-line Treatment of Adebelizumab Combined With Irinotecan Liposome in Advanced Small Cell Lung Cancer

Adebellizumab: intravenous drip, 1200mg, the infusion time is controlled between 30-60 minutes, and the infusion is completed within 2 hours at most. It is administered on the first day of each cycle and repeated once every 3 weeks.Irinotecan liposome: intravenous drip, 80mg/m2, infusion time of 30 minutes, the first dose of each cycle, repeated once every 3 weeks.After 4-6 cycles of adebelizumab combined with irinotecan liposome treatment, the subjects who did not develop the disease continued to use adebelizumab (1200mg, D1, Q3W) for maintenance treatment until the disease progressed, the toxicity was intolerable, the subjects voluntarily asked to withdraw and the researchers judged that the subjects needed to withdraw from the study.