This study is an Open-Label, Phase 1/2a, First-in-Human, Dose-Escalation, Dose-Expansion, and Proof-of-Concept Study to Investigate Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Efficacy of DA-4505 as a Single Agent and in Combination With Pembrolizumab in Adult Patients With Locally Advanced or Metastatic Solid Tumors.