Phase 2a/2b Study Emapalumab: A Window of Opportunity in Pediatric Aplastic Anemia

Inclusion Criteria: * Patients undergoing workup for suspected newly diagnosed sAA: * Patients with severe cytopenias and a hypocellular marrow concerning for sAA * Patients that meet the definition for suspected sAA (Camitta Criteria) as follows: Marrow Cellularity: \<25%, or 25-50% with \<30% residual hematopoietic cells Peripheral cytopenias (at least 2 of 3) Absolute neutrophil count (ANC): \<500 x 10\^9/L Platelets: \<20 x 10\^9/L Absolute Reticulocyte Count: \<60 x 10\^9/L * Patients that do not have evidence of leukemia or MDS * Patients \< 25 years of age at time of diagnosis *…