This study is recruiting people with advanced solid cancers to assess how safe and tolerable a new immunotherapy (called BG-T187) is when given by itself and in combination with other treatmentsA Phase 1 Study Investigating the Safety, Tolerability, Pharmacokinetics, and Preliminary Antitumor Activity of BG-T187, an EGFR×MET Trispecific Antibody, Alone and in Combination With Other Therapeutic Agents in Patients With Advanced Solid Tumors

Exclusion

1. Prior severe allergic reactions or hypersensitivity to the active ingredient and excipients of BG-T187 or other monoclonal antibodies.
2. Spinal cord compression, active leptomeningeal disease, or uncontrolled, untreated brain metastasis.
3. Any malignancy ≤ 3 years before the first dose of study drug(s) except for the specific cancer under investigation in this study and any locally recurring cancer that has been treated with curative intent (eg, resected basal or squamous cell skin cancer, superficial bladder cancer, or carcinoma in situ of the cervix or breast).
4. History of ILD or noninfectious pneumonitis requiring steroids or other immune suppressive agents ≤ 2 years before the first dose of the study drug, or with current ILD/noninfectious pneumonitis, or where suspected ILD/noninfectious pneumonitis cannot be ruled out by imaging during screening.
5. Uncontrollable pleural effusion, pericardial effusion, or ascites requiring frequent drainage (recurrence ≤14 days after intervention).
6. Active hepatitis C.
7. Infection (including tuberculosis infection, or other) requiring systemic (oral or intravenous) antibacterial, antifungal, or antiviral therapy ≤ 14 days before the first dose of study drug(s).

Note: Other protocol defined Inclusion/Exclusion criteria may apply.