A Dose finding Study to Evaluate the Safety, Tolerability and Pharmacokinetics and Preliminary Anti-Tumor Activity of ICP-189 Tablets and ICP-189 Tablets in Combination with Anti-PD-1 Monoclonal Antibody in Patients with Advanced Solid Tumors.

Inclusion Criteria:

1. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1;
2. Patients with histologically confirmed locally advanced unresectable or metastatic solid tumors;
3. At least one measurable lesion according to RECIST 1.1.

Exclusion Criteria:

1. Patients who have had other cancer(s) within 5 years prior to the first dose, except for locally curable cancers that have been apparently cured;
2. Patients with unstable primary central nervous system (CNS) tumors or CNS metastases;
3. Patients who have an active autoimmune disease or have had an autoimmune disease with risk of recurrence;
4. Patients who have active or history of interstitial lung disease or non-infectious pneumonia;
5. Patients who have a history of severe allergic reaction to any component of ICP-189 tablets or anti-PD-1 antibody (> grade 3 assessed by CTCAE 5.0).

Other protocol-defined inclusion/exclusion criteria apply.