Open-Label, Expanded Access Protocol of a Human Monoclonal Antibody, Ansuvimab (mAb114), Administered As a Therapeutic to Ebola-Infected Patients or As a High-Risk Ebola Post-Exposure Prophylaxis

This is an open-label, intermediate-size patient population, expanded access protocol (EAP) of ansuvimab administered once by IV infusion at a dose of about 50 mg/kg (weight-based dosing). Participants will be monitored and assessed daily for safety, including clinical observation, laboratory monitoring, the incidence of adverse events (AEs) and serious adverse events (SAEs) as defined by protocol, including AEs that by clinical judgement are atypical for orthoebolavirus zairense (EBOV) in infected patients, and any AEs that occur during product infusions. PEP participants will be followed to determine outcome following ansuvimab administrations through the study period for EBOV status (positive/negative). Blood will be collected for protocol-specific assessments and RT-PCR evaluation of viral load by available assay. A blood sample for Ebolavirus viral load measurement will be collected before mAb114 administration and at subsequent study time points per the Schedule of Evaluations. Participants will be followed for a period as defined by protocol after the product administration. Survival status for infected patients and follow up for PEP participants for signs/symptoms of EBOV will be recorded as applicable.

Ansuvimab will be provided for expanded access in any EBOV outbreak location as authorized by the applicable Regulatory Authorities and/or Ethics Committee(s).