Adibelimab, Famitinib and Chemotherapy for Advanced NSCLC After PD-1 Inhibitor Failure

This study is a prospective, single-arm clinical investigation. It aims to assess the effectiveness of the Adibelimab monoclonal antibody in combination with Famitinib and chemotherapy for treating patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) without driver mutations, who have progressed following initial treatment with PD-1 monoclonal antibodies and chemotherapy. The study's primary focus is on evaluating progression-free survival (PFS) among the 40 participants, spanning from December 2023 to December 2026. It intends to explore the therapeutic potential of switching from PD-1 to PD-L1 inhibitors in overcoming immune resistance and identify subgroups that may particularly benefit from this treatment strategy, thereby providing insights into personalized therapy for advanced NSCLC.

Inclusion criteria

• Participants must be adults (≥18 years) who have signed an informed consent form.
• They should have an ECOG performance status of 0-1. Diagnosed with stage IIIB-IV NSCLC and have progressed after PD-1 inhibitor treatment.
• Expected to live at least 3 months and have at least one measurable lesion per RECIST v1.1.
• Laboratory test results must meet specific criteria for blood counts, liver and kidney function, and coagulation parameters.
• Patients with stable, treated brain metastases are eligible.
• Women of childbearing potential and men with partners of childbearing potential must agree to use contraception.

Exclusion criteria

• Prior therapy with anti-PD-L1, anti-PD-L2, other immune checkpoint inhibitors, or specific cancer treatments.
• Certain cancer types, known mutations, or recent use of systemic corticosteroids or immunosuppressive medications.
• Active brain or leptomeningeal metastases without stability post-treatment, recent severe infections, or major surgery.
• Other conditions that might interfere with the study, such as uncontrollable third-space fluid accumulations, active autoimmune diseases or infections, significant bleeding or thromboembolic events, serious heart conditions, severe allergies to study drugs, other active malignancies, HIV/AIDS, hepatitis B or C infection, or participation in another interventional clinical study within a specified period.