This study comprises two phases: Phase Ib and Phase II. Phase Ib is a multicenter, randomized, open-label, active-controlled, single-dose, dose-escalation study to evaluate the safety, tolerability, PK/PD profile, and immunogenicity of a single subcutaneous dose of GenSci134 in children with idiopathic short stature (ISS).
Phase II is a multicenter, randomized, open-label, active-controlled, multiple-dose, parallel-group study to assess the efficacy and safety of multiple subcutaneous doses of GenSci134 at different levels versus Norditropin® in children with ISS. It will also evaluate PK/PD profile, immunogenicity, and biomarkers to support dose selection for Phase III.