This study is a randomized, controlled, double-blind, multicenter Phase III registration clinical trial, aiming to evaluate the efficacy and safety of HB0025 combined with chemotherapy (pemetrexed plus carboplatin/cisplatin) versus tislelizumab combined with chemotherapy (pemetrexed plus carboplatin/cisplatin) as a first-line treatment for unresectable locally advanced (Stage IIIB/IIIC) or metastatic (Stage IV) nonsquamous non-small cell lung cancer (NSCLC).
The study will take progression-free survival (PFS) assessed by Blinded Independent Central Review (BICR) as the primary endpoint, and plans to enroll approximately 500 subjects. After being eligible for screening, patients will be randomly assigned to the study groups at a ratio of 1:1 to receive either HB0025 combined with chemotherapy (experimental group) or tislelizumab combined with chemotherapy (control group). Both regimens will be administered once every 3 weeks (Q3W). After completing 4 cycles of treatment, patients will enter the maintenance therapy phase with HB0025 or tislelizumab plus pemetrexed (Q3W). The treatment will last until the investigator determines that there is no longer clinical benefit (based on comprehensive assessment of RECIST v1.1 imaging results and clinical symptoms), intolerable toxicity occurs, 35 cycles of study treatment are completed, or other treatment termination criteria specified in the protocol are met, whichever comes first.
Able to fully understand and voluntarily sign the informed consent form, and willing and able to comply with the clinical study procedures and follow-up visits.
Aged 18 to 75 years old (inclusive of both upper and lower limits), male and female subjects are eligible.
Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) score of 0-1.
Expected survival ≥ 12 weeks.
Histologically confirmed presence of any small cell carcinoma, neuroendocrine carcinoma, or sarcoma components [mixed-type NSCLC (e.g., adenosquamous carcinoma) is permitted for enrollment].
Known presence of driver gene alterations with approved first-line therapeutic options, such as sensitive EGFR mutations, ALK fusion, ROS1 fusion, BRAF V600 mutation, NTRK fusion, MET exon 14 skipping mutation, or RET fusion.
History of a second primary malignancy within 5 years before screening (enrollment is permitted for other malignancies cured by local treatment, e.g., carcinoma in situ of the cervix, localized cutaneous squamous cell carcinoma, basal cell carcinoma, ductal carcinoma in situ of the breast, < T1 urothelial carcinoma, and papillary microcarcinoma of the thyroid).
No metastasis to the meninges, midbrain, pons, medulla oblongata, spinal cord, or spinal cord compression; ② No increase in lesion size or new lesions after treatment;