CAB-AXL-ADC Safety and Efficacy Study in Adult and Adolescent Patients With Sarcoma

Inclusion Criteria: * Patients must have measurable disease. * Age ≥ 12 years (Phase 2) * Adequate renal function * Adequate liver function * Adequate hematological function * Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Life expectancy of at least three months. Exclusion Criteria: * Patients must not have clinically significant cardiac disease. * Patients must not have known non-controlled CNS metastasis. * Patients must not have a history of ≥ Grade 3 allergic reactions to mAb therapy as well as known or suspected allergy or intolerance to any agent given during this study. * Patients must not have had major surgery within 4 weeks before first BA3011 administration. * Patients must not have had prior therapy with a conjugated or unconjugated auristatin derivative/vinca-binding site targeting payload. * Patients must not have known human immunodeficiency virus (HIV) infection, active hepatitis B and/or hepatitis C. * Patients must not be women who are pregnant or breast feeding.