- Participants must sign a written informed consent form (ICF); and agree to comply with study requirement
- Phase 1a (Dose Escalation):
Part A, A-CN, and B: Participants with histologically or cytologically confirmed unresectable locally advanced or metastatic solid tumor previously treated with standard systemic therapy or for whom treatment is not available or not tolerated Note: Only Chinese participants will be eligible for Part A-CN.
Part C: Participant has histologically or cytologically confirmed, locally advanced, unresectable Stage III Non-small cell lung cancer (NSCLC) suitable for definitive chemoradiotherapy (CRT)
Part D: Participant with locally advanced, histologically confirmed inoperable esophageal squamous cell carcinoma (ESCC) suitable for definitive CRT
Phase 1b (Dose Expansion): Participants with histologically or cytologically confirmed solid tumors of selected types previously treated with standard therapy.
- Participants must be able to provide formalin-fixed paraffin embedded (FFPE) tumor tissue sample.
- Phase 1a Part A, A-CN, B and Phase 1b: ≥ 1 measurable lesion per Response evaluation criteria in solid tumors (RECIST) v1.1
- Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 1