GR-2301

This is a randomized, double-blind, placebo-controlled Phase I clinical trial evaluating the safety, tolerability, pharmacokinetics and immunogenicity characteristics of GR2301 injection in healthy adult subjects in China. The Multiple doses will be gradually escalated.

This is a randomized, double-blind, placebo-controlled Phase I clinical trial evaluating the safety, tolerability, pharmacokinetics, immunogenicity, and preliminary pharmacodynamic characteristics of GR2301 injection in healthy adult subjects in China.The GR2301 injection dosage will be gradually increased. All healthy subjects will receive a single subcutaneous injection. Following administration, subjects will be followed for at least 16 weeks ± 7 days.