A Phase 1, Open-Label, Dose-Escalation Study to Determine an Appropriate Starting Dose of Sacituzumab Govitecan in Subjects With Advanced or Metastatic Solid Tumor and Moderate Liver Impairment

Key Inclusion Criteria for all Individuals: * Histologically confirmed advanced or metastatic solid tumor that is measurable or nonmeasurable. * Eastern Cooperative Oncology Group (ECOG) performance status score of 0, 1, or 2. * Adequate hematologic counts without transfusional or growth factor support within 2 weeks of study drug initiation (hemoglobin ≥ 9 g/dL, absolute neutrophil count (ANC) ≥1,500/mm\^3, and platelets ≥ 100,000/ μL). * Creatinine clearance ≥ 30 mL/min as assessed by the Cockcroft-Gault equation. Key Inclusion Criteria for Individuals with Normal Hepatic Function: * Norm…