Safety and Pharmacokinetics Study of YYB101 in Advanced Solid Tumors Patients Who Are Refractory to Standard Therapy

"Dose-escalation cohort: YYB101 of each dose level (0.3mg/kg to 5mg/kg), IV infusion on Day 1, Day 29, and followed by every 2 weeks until disease progression or unacceptable toxicity development.~Dose-expansion cohort: YYB101 of MTD (or RP2D), IV infusion every 2 weeks until disease progression or unacceptable toxicity development"