A Study to Evaluate the Efficacy, Safety and Pharmacokinetics of Emapalumab in Adult Patients With HLH

Patients were administered Emapalumab-Lzsg by intravenous (i.v.) infusion over a period of 1 to 2 hours, at an initial dose of 6 mg/kg and continued at 3 mg/kg, every 3 days for the first 2 weeks (Study Day \[SD\] 15), and then twice-a-week. If the treating physician deemed appropriate, the dose of emapalumab could be increased (up to 10 mg/kg), guided by clinical and laboratory response.