Bronchiolitis Obliterans, also known as bronchiolitis fibrosa obliterans, is related to cryptogenic organizing pneumonia and graft-versus-host disease. An important gene associated with Bronchiolitis Obliterans is CXCL8 (C-X-C Motif Chemokine Ligand 8), and among its related pathways/superpathways are Innate Immune System and ERK Signaling. The drugs Fludarabine and Busulfan have been mentioned in the context of this disorder. Affiliated tissues include Lung and bone marrow, and related phenotypes are homeostasis/metabolism and growth/size/body region