Golidocitinib With PD-1 Inhibitors as Maintenance Treatment for Previously Untreated ES-SCLC

This study is a single-arm clinical study to evaluate the safety and efficacy of golidocitinib combined with PD-1 inhibitors in ES-SCLC. The study consists of two parts:

Part A (dose escalation), which will include previously untreated ES-SCLC subjects, aims to explore the safety and tolerability of golidocitinib combined with PD-1 inhibitors in this population and determine the recommended dose of the combination.

Part B (dose expansion), which will include previously untreated ES-SCLC subjects, aims to explore the preliminary efficacy of golidocitinib combined with PD-1 inhibitors in this population and evaluate the efficacy and safety.

After completing the required assessments during the screening period and meeting the eligibility criteria, the subjects will first receive 4 cycles of PD-1 inhibitor combined with chemotherapy in the induction phase, followed by maintenance treatment with PD-1 inhibitor combined with golidocitinib. Subjects will continue to receive PD-1 inhibitor combined with golidocitinib until disease progression, intolerable toxicity, death, withdrawal of informed consent by the subject, or 24 months of treatment.