Phase I Study to Evaluate Safety and Anti-tumor Activity of PB101, an Anti-angiogenic Immunomodulating Agent

Primary Objectives To assess the safety and tolerability of PB101 and determine the maximum tolerated dose (MTD) and/or the recommended phase-2 dose Secondary Objectives 1. To characterize the pharmacokinetics of PB101. 2. To identify the preliminary anti-tumor activity of PB101. 3. To assess the immunogenicity of PB101. Tertiary Objectives To explore the correlation between potential pharmacodynamic (PD) biomarkers (e.g., vascular endothelial growth factor(VEGF)-A, placental growth factor (PlGF) and VEGFR1 signaling) and anti-cancer activity of PB101.