Pregnancy Outcomes in Multiple Sclerosis Management

Summary

Pregnancy in women with multiple sclerosis (MS) represents a critical period in which immune modulation, disease activity and therapeutic choices must be carefully balanced. During gestation, a natural shift towards anti-inflammatory immunity often leads to a reduction in clinical relapses, particularly in the third trimester. However, this remission is commonly followed by a rebound of disease activity in the first months after delivery. The safety of in utero exposure to disease-modifying therapies (DMTs) such as interferon-beta, glatiramer acetate and natalizumab has been progressively elucidated through large registries, demonstrating no substantial increase in adverse foetal or neonatal outcomes when treatment is appropriately timed. Ongoing research has clarified the risks associated with early withdrawal of high-efficacy agents and underscored the importance of individualised counselling on breastfeeding, postpartum relapse prophylaxis and reintroduction of therapy. Practical management now emphasises preconception planning, multidisciplinary collaboration and evidence-based guidelines to optimise both maternal neurological status and obstetric outcomes on a global scale.

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Pregnancy Outcomes in Multiple Sclerosis Management publication trend

The graph below shows the total number of articles in pregnancy outcomes in multiple sclerosis management across all publications each year (not limited to Nature Index journals).

Technical terms

Relapse: A new or worsening neurological episode reflecting active inflammation in MS.

Expanded Disability Status Scale (EDSS): A numerical scale (0–10) assessing MS-related disability based on clinical examination.

Disease-modifying therapy (DMT): A treatment designed to alter the course of MS by reducing relapse frequency or delaying progression.

Spontaneous abortion: The unplanned loss of a pregnancy before 22 weeks of gestation.

References

  1. Evaluation of pregnancy outcomes from the Tysabri® (natalizumab) pregnancy exposure registry: a global, observational, follow-up study. BMC Neurology (2016).
  2. Pregnancy and fetal outcomes after Glatiramer Acetate exposure in patients with multiple sclerosis: a prospective observational multicentric study. BMC Neurology (2012).
  3. Multiple Sclerosis Disease Activity and Disability Following Discontinuation of Natalizumab for Pregnancy. JAMA Network Open (2022).
  4. Pregnancy outcomes in interferon-beta-exposed patients with multiple sclerosis: results from the European Interferon-beta Pregnancy Registry. Journal of Neurology (2020).
  5. Pregnancy-related issues in women with multiple sclerosis: an evidence-based review with practical recommendations. Journal of Drug Assessment (2020).
  6. Learning from Nature: Pregnancy Changes the Expression of Inflammation-Related Genes in Patients with Multiple Sclerosis. PLOS ONE (2010).

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