Efficacy, Safety, and Pharmacokinetics of Shu Yang IVIG

Patients with primary immunodeficiency will switch to Shu Yang IVIG and optimize the posology to IgG 300 to 600 mg every 21 or 28 days in a run-in period of 2 to 6 administrations, aiming at keeping the IgG trough levels above 5 g/L. At Visit 4, at least 20 patients will perform the PK assessment, collecting additional blood samples.