Outcomes of Progressive Multifocal Leukoencephalopathy Treated with IL-7

Progressive multifocal leukoencephalopathy (PML) is a severe demyelinating disease of the central nervous system caused by the reactivation of the JC virus. The authors of this study conducted a multi-centered retrospective observational study on 64 patients with PML who were treated with recombinant human IL-7 (RhIL-7). Overall, the one-year all-cause survival following start of RhIL-7 was 55% and similar among human immunodeficiency virus/acquired immunodeficiency syndrome, hematological malignancies, and primary immunodeficiencies.