Journal
NEUROLOGY
Volume 81, Issue 19, Pages 1654-1658Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1212/01.wnl.0000435293.34351.11
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Funding
- European Federation of Neurological Societies
- UCB
- Biogen Idec
- Sanofi-Aventis
- Allmirall
- Bayer
- Genzyme
- Medtronic
- Merck-Serono
- Novartis
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Objective: To report about a possible association between fingolimod treatment and tumefactive demyelinating lesions (TDL) as seen in a patient developing repeated TDL on continued fingolimod therapy. Methods: We performed serial clinical and radiologic assessments and immunophenotyping of blood and CSF immune cells. We also present a literature review about recent similar cases. Results: Clinical course and radiologic findings were consistent with diagnosis of TDL. Immune cell phenotyping showed pronounced shifts in the immune cell composition related to fingolimod treatment. In addition, we observed a subset of highly differentiated effector cells (CD45R0negCCR7neg) within the CD8 + T-cell population, which was about 2-fold enriched in the CSF compared to the peripheral blood. Conclusion: Our observations add further evidence for the development of atypical demyelinating lesions in some patients receiving fingolimod. These might be related to a treatment-associated shift in the immunopathology of specifically susceptible individuals.
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