RecruitingPhase 1Drug trialA Study to Investigate HLA-G Targeted Exosome (SOB100) in Healthy SubjectsThe investigational drug, SOB100, is an HLA-G targeted exosome equipped with a nanobody namely anti-HLA-G VHH on the exosome membrane. This is a Phase I dose escalation study to exam the tolerability, safety, and pharmacokinetics in healthy subjects.