Neihulizumab (ALTB-168) in Patients With Steroid-refractory Acute Graft-versus-host Disease or Treatment-refractory Acute Graft-versus-host Disease

Neihulizumab (ALTB-168) is an immune checkpoint agonist antibody that regulates T cell homeostasis. The unique mechanism of action provides a natural regulation of T cell homeostasis that induces cell death preferentially in late-stage activated T cells without affecting resting T cells and early-activated T cells. Because pathogenic T cells underlying the inflammatory conditions are usually in late-stage activated state, eliminating this population of cells can potentially result in controlling autoimmune inflammation of T cell associated diseases, such as GvHD.