Study of CHS-388 (Formerly Known as SRF388) in Patients With Advanced Solid Tumors

Part A and Part B Abbreviated Inclusion Criteria: * ≥ 18 years of age * Locally advanced or metastatic (Stage IV) solid tumor that has progressed during or after standard therapy, and for whom no available therapies are appropriate (based on investigator judgment) * Patients in Part B with advanced or metastatic ccRCC, HCC, or NSCLC must have at least 1 measurable lesion per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 * Patients with HCC in Part B must have at least 1 measurable target lesion according to modified RECIST (mRECIST) * Patients with HCC must have unresectable disease, Barcelona Clinic Liver Cancer (BCLC1) Stage B (not eligible for transcatheter arterial chemoembolization \[TACE\]) or Stage C * For patients in Part B with ccRCC, demonstrated progressive disease (PD) during or after the most recent treatment regimen. Prior treatment history must include progression during or after treatment with regimen(s) that have included a vascular endothelial growth factor (VEGF)-targeted agent and an immune checkpoint inhibitor. Patients who did not progress on but discontinued the VEGF-targeted agent for toxicity or intolerability are permitted. * For patients in Part B with HCC, demonstrated PD during or after the most recent treatment regimen. Prior treatment history must include progression during or after treatment with a VEGF-targeted agent. Patients who did not progress on but discontinued the VEGF-targeted agent for toxicity or intolerability are permi…