Study of Oral EGFR Inhibitor DZD6008 Combined With Sunvozertinib in Patients Who Have Advanced NSCLC With EGFR Mutations (TIAN-SHAN8)

NSCLC with mixed small-cell lung cancer (SCLC) or NSCLC with histologic SCLC transformation.

For part A: participants only harboring EGFR exon20ins（harboring other EGFR mutations could be enrolled）.

Prior treatment with any of the following: 1) Previously received two or more than two lines of third-generation EGFR TKI treatment. 2) Previously received systemic anti-cancer therapy for advanced disease (only for B3 cohort). 3) Immunotherapy or other antibody therapy within 4 weeks prior to the first administration; 4) Any cytotoxic chemotherapy, investigational drugs or other anticancer drugs from a previous treatment regimen or clinical study within 14 days prior to the first administration; 5) Radiotherapy with a limited field of radiation for palliation within 7 days of the first administration, radiation to more than 30% of the bone marrow or with a wide field of radiation within 28 days of the first administration; 6) Currently receiving or unable to stop drug or herbal supplements known to be potent inhibitors or inducers of cytochrome P450 (CYP)3A4. A washout period of at least 2 weeks for strong inhibitors and 3 weeks for strong inducers is required prior to the first study drug administration; 7) Currently receiving or unable to stop drugs known to be CYP3A4 sensitive substrate with a narrow therapeutic index. A washout period of at least 2 weeks is required prior to the first study drug administration; 8) Currently receiving or unable to stop drugs known to be proton-pump inhibitors. A washout period of at least 1 week is required prior to the first study drug administration; 9) Major surgery within 4 weeks of the first administration of study drug administration or anticipated during the study period.

Any unresolved toxicities from prior anti-cancer therapy greater than CTCAE Grade 1.