BEACON-1: Study of AVZO-103 as a Single Agent and in Combination Therapy in Patients With Locally Advanced or Metastatic Urothelial Cancer or Other Solid Tumors (AVZO-103-1001)

This study, the first clinical trial of AVZO-103, aims to determine the safety, tolerability, pharmacokinetics, pharmacodynamics, maximum tolerated dose, and antitumor activity of AVZO-103 when administered intravenously as a monotherapy and in combination therapy to patients with locally advanced or metastatic urothelial cancer or other solid tumors.

Key Inclusion Criteria: * Patient must be an adult, 18 years of age and older with an Eastern Cooperative Oncology Group (ECOG) Performance Status of ≤ 1 and a life expectancy of \> 3 months. * Patients with histologically or cytologically confirmed locally advanced/metastatic malignancies for tumor types of preferred indications: o Locally advanced or metastatic urothelial cancer and other solid tumors (as specified in the protocol). * Measurable disease as assessed by Investigator using RECIST v1.1. * Agree to provide molecular test report results to confirm eligibility and archival tumor samples and/or fresh biopsy, as applicable. * Other protocol-defined Inclusion criteria apply. Key Exclusion Criteria: * Patients with active central nervous system (CNS) metastases are not eligible. Patients with asymptomatic and treated brain metastases may participate if they are radiologically stable for at least 4 weeks prior to the first dose of this study and do not require steroid treatment. Patients with suspected or confirmed leptomeningeal disease are not eligible, even if treated. * Prior Stevens-Johnson syndrome/toxic epidermal necrolysis. * History of drug-induced interstitial lung disease (ILD). * History of any serious cardiovascular condition. * Infection requiring IV antibiotics, antivirals, or antifungals within 2 weeks prior to first dose. * History of allogenic stem cell or solid organ transplant. * Other protocol-defined Exclusion criteria apply.