title: Progressive multifocal leukoencephalopathy in a patient taking the MS pill Gilenya.
mesh_terms: D000068876:Fingolimod Hydrochloride; D006801:Humans; D007166:Immunosuppressive Agents / Q000009:adverse effects* / Q000627:therapeutic use; D007968:Leukoencephalopathy, Progressive Multifocal / Q000139:chemically induced*; D009103:Multiple Sclerosis / Q000188:drug therapy; D011409:Propylene Glycols / Q000008:administration & dosage / Q000009:adverse effects*; D013110:Sphingosine / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives*
chemical_list: D007166:Immunosuppressive Agents; D011409:Propylene Glycols; D000068876:Fingolimod Hydrochloride; D013110:Sphingosine