Treatment of GVHD in Hematopoietic Stem Cell Transplant (HSCT) Recipients Using AAT Plus Corticosteroids (CS) Compared With Corticosteroids Alone

A Randomized, Double-Blind, Placebo-Controlled Multicenter Phase III Trial of Alpha 1 - Antitrypsin (AAT) Combined With Corticosteroids vs Corticosteroids Alone for the Treatment of High Risk Acute Graft-versus-Host Disease (GVHD) Following Allogeneic Hematopoietic Stem Cell Transplant

Study CSL964_5001 will investigate the efficacy of AAT with corticosteroids compared with corticosteroids alone as first line therapy for patients with high-risk acute GVHD

Inclusion Criteria:

• Patients 12 years of age or older
• Initial presentation of acute GVHD after allogeneic hematopoietic cell transplantation for any indication
• Any graft or donor source or conditioning intensity
• Clinical diagnosis of acute GVHD requiring systemic therapy with corticosteroids

Exclusion Criteria:

• Prior exogenous AAT exposure for GVHD prophylaxis
• Relapsed, progressing, or persistent malignancy
• de novo chronic GVHD or overlap syndrome developing before or present at the time of enrollment
• Receiving other drugs for the treatment of GVHD
• Receiving systemic CS for any indication within 7 days before the onset of acute GVHD