Listeria Meningitis Complicating Alemtuzumab Treatment in Multiple Sclerosis--Report of Two Cases

Int J Mol Sci. 2015 Jun 29;16(7):14669-76. doi: 10.3390/ijms160714669.


Alemtuzumab, a humanized monoclonal antibody targeting the surface molecule CD52, leads to a rapid depletion of immune cells in the innate and adaptive immune system. In phase 2 and 3 trials in multiple sclerosis (MS), infections have been reported more frequently in alemtuzumab than in interferon beta treated patients. Here we report two patients treated with alemtuzumab for MS developing Listeria meningitis few days after the first infusion cycle. Both patients recovered completely after prompt diagnosis and adequate treatment. Physicians and patients should be aware of this serious, but treatable complication.

Keywords: Listeria monocytogenes; alemtuzumab; meningitis; multiple sclerosis.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Alemtuzumab
  • Antibodies, Monoclonal, Humanized / adverse effects*
  • Antibodies, Monoclonal, Humanized / therapeutic use
  • Female
  • Humans
  • Meningitis, Listeria / etiology*
  • Middle Aged
  • Multiple Sclerosis / complications
  • Multiple Sclerosis / drug therapy*
  • Opportunistic Infections / etiology*


  • Antibodies, Monoclonal, Humanized
  • Alemtuzumab