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March 06, 2018; 90 (10) Article

Relapse occurrence in women with multiple sclerosis during pregnancy in the new treatment era

Raed Alroughani, Maryam S. Alowayesh, Samar F. Ahmed, Raed Behbehani, Jasem Al-Hashel
First published February 2, 2018, DOI: https://doi.org/10.1212/WNL.0000000000005065
Raed Alroughani
From the Division of Neurology (R.A.), Department of Medicine, Amiri Hospital, Sharq; Department of Pharmacy Practice (M.S.A.), School of Pharmacy, Kuwait University, Jabriya; Department of Neurology (S.F.A., J.A.-H.), Ibn Sina Hospital, Sabah Medical Area, Kuwait; Department of Neurology and Psychiatry (S.F.A.), Minia University, Egypt; Department of Ophthalmology (R.B.), Al-Bahar Eye Center, Sabah Medical Area; and Department of Medicine (J.A.-H.), Faculty of Medicine, Kuwait University, Jabriya.
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Maryam S. Alowayesh
From the Division of Neurology (R.A.), Department of Medicine, Amiri Hospital, Sharq; Department of Pharmacy Practice (M.S.A.), School of Pharmacy, Kuwait University, Jabriya; Department of Neurology (S.F.A., J.A.-H.), Ibn Sina Hospital, Sabah Medical Area, Kuwait; Department of Neurology and Psychiatry (S.F.A.), Minia University, Egypt; Department of Ophthalmology (R.B.), Al-Bahar Eye Center, Sabah Medical Area; and Department of Medicine (J.A.-H.), Faculty of Medicine, Kuwait University, Jabriya.
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Samar F. Ahmed
From the Division of Neurology (R.A.), Department of Medicine, Amiri Hospital, Sharq; Department of Pharmacy Practice (M.S.A.), School of Pharmacy, Kuwait University, Jabriya; Department of Neurology (S.F.A., J.A.-H.), Ibn Sina Hospital, Sabah Medical Area, Kuwait; Department of Neurology and Psychiatry (S.F.A.), Minia University, Egypt; Department of Ophthalmology (R.B.), Al-Bahar Eye Center, Sabah Medical Area; and Department of Medicine (J.A.-H.), Faculty of Medicine, Kuwait University, Jabriya.
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Raed Behbehani
From the Division of Neurology (R.A.), Department of Medicine, Amiri Hospital, Sharq; Department of Pharmacy Practice (M.S.A.), School of Pharmacy, Kuwait University, Jabriya; Department of Neurology (S.F.A., J.A.-H.), Ibn Sina Hospital, Sabah Medical Area, Kuwait; Department of Neurology and Psychiatry (S.F.A.), Minia University, Egypt; Department of Ophthalmology (R.B.), Al-Bahar Eye Center, Sabah Medical Area; and Department of Medicine (J.A.-H.), Faculty of Medicine, Kuwait University, Jabriya.
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Jasem Al-Hashel
From the Division of Neurology (R.A.), Department of Medicine, Amiri Hospital, Sharq; Department of Pharmacy Practice (M.S.A.), School of Pharmacy, Kuwait University, Jabriya; Department of Neurology (S.F.A., J.A.-H.), Ibn Sina Hospital, Sabah Medical Area, Kuwait; Department of Neurology and Psychiatry (S.F.A.), Minia University, Egypt; Department of Ophthalmology (R.B.), Al-Bahar Eye Center, Sabah Medical Area; and Department of Medicine (J.A.-H.), Faculty of Medicine, Kuwait University, Jabriya.
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Citation
Relapse occurrence in women with multiple sclerosis during pregnancy in the new treatment era
Raed Alroughani, Maryam S. Alowayesh, Samar F. Ahmed, Raed Behbehani, Jasem Al-Hashel
Neurology Mar 2018, 90 (10) e840-e846; DOI: 10.1212/WNL.0000000000005065

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Abstract

Objective To determine the rate of relapse occurrence during pregnancy and postpartum.

Methods In a cross-sectional study using the national multiple sclerosis (MS) registry, pregnant women with relapsing MS were identified. Data on demographics, clinical characteristics, and disease-modifying therapies (DMTs), including washout periods, were collected. Timings and durations of relapses were extracted. A multivariate logistic regression was used to assess the relationship between relapses and prior use of different DMTs.

Results Completed data were available for 99 pregnancies (87 patients). Mean age and mean age at onset were 31.8 ± 5 and 24.4 ± 5.6 years, respectively, while the mean disease duration was 7.4 ± 4.6 years. Most pregnancies (89.9%) occurred in patients who were on DMTs in the year preceding pregnancy with a mean treatment duration of 63.4 ± 29 months. The rates of occurrence of relapses during pregnancy and postpartum were 17.2% and 13.7%, respectively. Most of the relapses occurred during the first (n = 6) and third (n = 7) trimesters. Rate of relapse was highest among patients receiving natalizumab and fingolimod before pregnancy. A longer washout period was significantly associated with relapse occurrence.

Conclusion The relapse occurrence during pregnancy is higher than the previously published rates. The use of high-efficacy therapies with long washout periods before conception was associated with an increased risk of relapses during pregnancy. Postpartum relapse occurrence was similar to that in previous reports.

Glossary

DMT=
disease-modifying therapy;
EDSS=
Expanded Disability Status Scale;
GA=
glatiramer acetate;
IFN-β=
interferon beta;
IVIG=
IV immunoglobulin;
IVMP=
IV methyl prednisolone;
MS=
multiple sclerosis;
PRIMS=
Pregnancy in Multiple Sclerosis;
Th=
T-helper

Footnotes

  • Go to Neurology.org/N for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.

  • Podcast: NPub.org/vsx0bb

  • Received July 21, 2017.
  • Accepted in final form December 4, 2017.
  • © 2018 American Academy of Neurology
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