Predictors of lymphocyte count recovery after dimethyl fumarate-induced lymphopenia in people with multiple sclerosis.
Dimethyl fumarate
Lymphopenia
Multiple sclerosis
Real-world study
Journal
Journal of neurology
ISSN: 1432-1459
Titre abrégé: J Neurol
Pays: Germany
ID NLM: 0423161
Informations de publication
Date de publication:
Jun 2021
Jun 2021
Historique:
received:
17
11
2020
accepted:
15
01
2021
revised:
13
01
2021
pubmed:
27
1
2021
medline:
22
6
2021
entrez:
26
1
2021
Statut:
ppublish
Résumé
Dimethyl fumarate (DMF) is an oral drug approved for Relapsing Multiple Sclerosis (RMS) patients. Grade III lymphopenia is reported in 5-10% DMF-treated patients. Data on lymphocyte count (ALC) recovery after DMF withdrawal following prolonged lymphopenia are still scarce. To characterize ALC recovery and to identify predictors of slower recovery after DMF interruption. Multicenter data from RMS patients who started DMF and developed lymphopenia during treatment were collected. In patients with grade II-III lymphopenia, ALCs were evaluated from DMF withdrawal until reaching lymphocyte counts > 800/mm Among 1034 patients who started DMF, we found 198 (19.1%) patients with lymphopenia and 65 patients (6.3%) who discontinued DMF due to persistent grade II-III lymphopenia. Complete data were available for 51 patients. All patients recovered to ALC > 800 cells/mm ALC recovery after DMF withdrawal is usually rapid, nevertheless it may require longer time in patients with lower ALC count at DMF interruption, longer disease duration and previous exposure to MS treatments, potentially leading to delayed initiation of a new therapy.
Sections du résumé
BACKGROUND
BACKGROUND
Dimethyl fumarate (DMF) is an oral drug approved for Relapsing Multiple Sclerosis (RMS) patients. Grade III lymphopenia is reported in 5-10% DMF-treated patients. Data on lymphocyte count (ALC) recovery after DMF withdrawal following prolonged lymphopenia are still scarce.
OBJECTIVES
OBJECTIVE
To characterize ALC recovery and to identify predictors of slower recovery after DMF interruption.
METHODS
METHODS
Multicenter data from RMS patients who started DMF and developed lymphopenia during treatment were collected. In patients with grade II-III lymphopenia, ALCs were evaluated from DMF withdrawal until reaching lymphocyte counts > 800/mm
RESULTS
RESULTS
Among 1034 patients who started DMF, we found 198 (19.1%) patients with lymphopenia and 65 patients (6.3%) who discontinued DMF due to persistent grade II-III lymphopenia. Complete data were available for 51 patients. All patients recovered to ALC > 800 cells/mm
CONCLUSION
CONCLUSIONS
ALC recovery after DMF withdrawal is usually rapid, nevertheless it may require longer time in patients with lower ALC count at DMF interruption, longer disease duration and previous exposure to MS treatments, potentially leading to delayed initiation of a new therapy.
Identifiants
pubmed: 33496861
doi: 10.1007/s00415-021-10412-0
pii: 10.1007/s00415-021-10412-0
pmc: PMC8179888
doi:
Substances chimiques
Immunosuppressive Agents
0
Dimethyl Fumarate
FO2303MNI2
Types de publication
Journal Article
Multicenter Study
Langues
eng
Sous-ensembles de citation
IM
Pagination
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