Phase II Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Antitumor Activity of ALK202 for Injection in Combination With Drugs in NSCLC Participants.

Inclusion Criteria:

1. The trial Participants themselves (and/or guardians) have understood and agreed to follow the study procedures and voluntarily signed the ICF;
2. Men and women ≥18 and ≤75 years old on the day of signing the ICF;
3. The trial participants agree to provide fresh or archived tumor tissues for the detection of the expression status of driving genes or proteins (such as EGFR expression, c-MET expression, and PD-L1 expression status, etc.). If the trial participants are unable to provide the required tumor tissues for testing, their participation in the trial must be approved by the sponsor;
4. The presence of at least one measurable lesion is required according to the RECIST v1.1 criteria. A neoplastic lesion that has received local treatment, such as radiotherapy, can be taken as a target lesion if disease progression is proved by imaging;
5. Expected survival ≥ 3 months;

Exclusion Criteria:

1. Previously received EGFR- and/or MET-targeting ADCs and/or ADCs with topoisomerase I inhibitor as the payload;
2. Participated in other interventional clinical trials within 4 weeks or 5 drug half-lives before the first dose of ALK202 (whichever is shorter). Note: Patients who have participated in another interventional clinical trial, even if they are still in the survival follow-up period of the previous trial, may be enrolled in this study provided that the first dose of ALK202 is to be administered ≥5 half-lives or 4 weeks from the last dose of the trial drug (whichever is shorter);
3. Received chemotherapy, targeted therapy, immunotherapy, interventional procedure, or other systemic antitumor therapy within 4 weeks (Note: 6 weeks for nitrosourea or mitomycin C, 2 weeks or 5 half-lives of the drugs \[whichever is shorter\] for oral fluorouracil and small-molecule targeted drugs, and 2 weeks for Chinese medicines with anti-tumor indications) prior to the first dose of ALK202;
4. Received radical radiotherapy, whole-brain radiotherapy, or bone marrow irradiation \> 30% within 4 weeks before the first dose of ALK202; or palliative radiation (including stereotactic radiotherapy) of non-target lesions for symptom relief purposes within 2 weeks prior to the first dose;
5. Took drugs or food that strongly inhibit or induce the cytochrome P450 (CYP) isoenzyme, CYP3A4 within 2 weeks or within 5 half-lives prior to the first dose of ALK202, whichever is longer.