A Multinational Study Assessing an Oral EGFR Inhibitor, DZD6008 in Patients Who Have Advanced NSCLC With EGFR Mutations (TIAN-SHAN1)

Carry other EGFR alterations than T790M and C797X, including but not limited to uncommon EGFR mutations (G719X, S768I, L861Q, exon 20 insertions mutations, etc.)(Part B).

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

Prior treatment with any of the following: 1)Immunotherapy or other antibody therapy within 4 weeks prior to the first administration; 2)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; 3)Radiotherapy with a limited field of radiation for palliation within 7 days of the first dose, radiation to more than 30% of the bone marrow or with a wide field of radiation within 28 days before screening; 4)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; 5)currently receiving or unable to stop drugs known to be CYP3A4 sensitive substrate with a narrow therapeutic index. A washout period of at least 14 days is required prior to the first study drug administration; 6)currently receiving or unable to stop drugs known to be proton pump inhibitors. A washout period of at least 7 days is required prior to the first study drug administration; 7)major surgery within 4 weeks of the first administration of DZD6008 or anticipated during the study period.

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