A systematic review and meta-analyses of pregnancy and fetal outcomes in women with multiple sclerosis: a contribution from the IMI2 ConcePTION project

Hairy cell leukaemia and pregnancy: A systematic review and review of literature

Hairy cell leukaemia (HCL) in pregnancy is exceptionally uncommon. A systematic review of the literature found 15 reported cases from 1960 to 2025. Eighty percent of cases were first diagnosed during pregnancy at a median maternal age of 32 years and a median gestational age of 14 weeks. Thrombocytopenia was universal and pancytopenia frequent. Forty-six percent of patients received therapy while pregnant, generally within 3 weeks of diagnosis. Interferon-alpha and splenectomy were the most common first-line options; pegylated interferon and rituximab were used less often. No maternal deaths, spontaneous abortions or stillbirths were reported. Median gestational age at delivery was 37 weeks, and 53.8% of births were vaginal. Post-partum therapy was administered in roughly half of the patients, most frequently cladribine, with favourable responses and preserved fertility in documented cases. Overall, current evidence supports carefully selected interferon-alpha, splenectomy or delayed systemic therapy as viable strategies that can control HCL without compromising obstetric outcomes, although individualized management and further evidence is needed.

Impact of disease-modifying therapies on pregnancy outcomes in multiple sclerosis: a prospective cohort study from the German multiple sclerosis and pregnancy registry

Background

In recent decades, relapsing remitting multiple sclerosis (MS) became more treatable through new disease-modifying therapies (DMTs). Identifying safe treatments with minimal fetal risks for family planning is needed.

Methods

In this prospective cohort from the German MS and Pregnancy Registry (DMSKW), we analyzed pregnancy and neonatal outcomes in MS-patients using descriptive statistics and logistic/linear regression models to compare DMT-exposed pregnancies to DMT-unexposed pregnancies.

Findings

In 2885 DMT-exposed and 837 DMT-unexposed pregnancies, exposure was not associated with spontaneous abortions, preterm births or major congenital anomalies (MCAs). Severe infections were rare, but more frequent in the Fumarates-group (11/395: 2.8% vs. 8/837 unexposed-group: 1.0%, p-value: 0.03). Antibiotic-use was associated with 2nd-trimester (OR: 2.47, CI: 1.47, 4.05, p-value: <0.001), 3rd-trimester Natalizumab-exposure (OR: 1.75, CI: 1.15, 2.63, p-value: 0.01), and anti-CD20-exposure (OR: 2.16, CI: 1.41, 3.29, p-value: <0.001). Birthweight was significantly reduced in the Sphingosine-1-phosphate-group (β: -132 g, CI: -205, -60, p-value: <0.001), and 3rd-trimester Natalizumab-subgroup (β: -74 g, CI: -138, -9.4, p-value: 0.02). Small for gestational age (SGA) neonates were common in the Sphingosine-1-phospate- (OR: 1.65, CI: 1.07, 2.50, p-value: 0.02) and anti-CD20-group (OR: 1.54, CI: 1.01, 2.32, p-value: 0.04), and also the entire cohort (651/3459: 18.8%), exceeding the general German population rate (10%) (p-value: <0.001).

Interpretation

We observed an increased SGA risk, especially following highly-effective DMTs, although the pathomechanisms remain unclear. More research is needed on infection risks and MCAs, perhaps by linking different registries.

Funding

The DMSKW is partly supported by Almirall, Biogen, Hexal, Merck, Novartis, Roche, Sanofi Genzyme, Teva Pharma and Viatris.

Pregnancy and Infant Outcomes in Women With Multiple Sclerosis Treated With Ocrelizumab

BACKGROUND AND OBJECTIVES

Ocrelizumab labeling advises contraception for women during treatment and for 6-12 months thereafter. Because pregnancies may occur during this time, it is critical to understand pregnancy and infant outcomes in women with multiple sclerosis (MS) after ocrelizumab exposure.

METHODS

Pregnancy cases reported to Roche global pharmacovigilance until 12 July 2023 were analyzed. In utero exposure was defined if the last ocrelizumab infusion occurred in the 3 months before the last menstrual period or during pregnancy. Breastfeeding exposure was defined if at least one infusion occurred while breastfeeding. Fetal death was termed spontaneous abortion (SA) if < 22 complete gestational weeks (GWs) and stillbirth if later. Live births (LBs) were preterm if < 37 complete GWs. Major congenital anomalies (MCAs), infant outcomes, and maternal complications were also analyzed.

RESULTS

In total, 3,244 pregnancies were reported in women with MS receiving ocrelizumab. The median maternal age was 32 years (Q1-Q3: 29-35 years), and most women had relapsing MS (65.6%). Of 2,444 prospectively reported pregnancies, 855 were exposed to ocrelizumab in utero (512 with a known outcome), 574 were nonexposed, and the remaining 1,015 had unknown timing of exposure. Most (83.6%; 956/1,144) of the pregnancies with a known outcome resulted in LBs (exposed, 84.2%; nonexposed, 88.3%). The exposed and nonexposed groups had similar proportions of other important pregnancy outcomes (preterm births, 9.5% vs 8.7%; SA, 7.4% vs 9.1%). Elective abortions were more frequent in the exposed group (7.4%, vs 1.7% in the nonexposed group). The proportion of LBs with MCAs was similar between the exposed and nonexposed groups (2.1% vs 1.9%) and within epidemiologic background rates. In the exposed group, one stillbirth and one neonatal death were prospectively reported.

DISCUSSION

In this analysis of a large pregnancy outcome dataset for an anti-CD20 in MS, in utero exposure to ocrelizumab was not associated with an increased risk of adverse pregnancy or infant outcomes. These data will enable neurologists and women with MS to make more informed decisions around family planning, balancing safety risks to the fetus/infant against the importance of disease control in the mother.

Pregnancy outcomes in adolescent and young adult patients with multiple sclerosis: A case series

BACKGROUND

While there is increasing understanding of the effect of pregnancy on the clinical course of multiple sclerosis (MS), there are limited studies focused on younger populations.

CASES

We report neurologic and obstetric outcomes for 14 pregnancies from 11 adolescent and young adult female patients with pediatric-onset MS who delivered live births prior to age 26, and describe their relevant social determinants of health.

CONCLUSION

Neurologic and obstetric outcomes in this cohort were generally good. Many of the pregnancies in our cohort appeared unplanned, underscoring the importance of discussing family planning with all MS patients of childbearing potential.

Maternal and neonatal outcomes in pregnant women with multiple sclerosis disease: A systematic review and meta-analysis

OBJECTIVES

Little is known regarding the impact of multiple sclerosis (MS) on maternal and neonatal outcomes. Consequently, this systematic review and meta-analysis aimed to study the impacts of MS on maternal and neonatal outcomes in pregnant women with a history of MS.

METHODS

This review was designed in line with the PRISMA guidelines. Two researchers conducted independent reviews of the literature without time restrictions until January 2023 using international databases, including PubMed, Web of Science, CINAHL Plus, Embase, Scopus, Science Direct, and Google Scholar. A random-effect meta-analysis, using the db metan command in Stata 17.2, was used to calculate the pooled measure of association.

RESULTS

The meta-analysis identified 15 studies involving 33,174,541 pregnant women (32,191 with MS and 33,142,350 as controls). The findings indicate that women with a history of MS are at an increased risk of cesarean delivery (OR=1.28, 95% Confidence Intervals [CI]: 1.14-1.45, p-value: 0.042). Also, these women are at higher risk of neonatal outcomes, such as preterm birth (OR= 1.39, 95% CI: 1.08-1.78, p-value: 0.02), congenital malformations (OR=1.32, 95%CI: 1.16-1.50, p-value: 0.031), Apgar score <7 (OR=2.13, 95% CI: 1.19-3.79, p-value: 0.03), and small for gestational age (OR=1.27, 95% CI: 1.08-1.51, p-value: 0.040).

CONCLUSION

Pregnant women with MS have a greater chance of adverse pregnancy results than pregnant women without MS. Consequently, pregnant women with MS should create detailed before and after pregnancy plans, in consultation with their doctors, spouses, families, and friends, regarding the necessary care and supplements. Future studies applying a prospective cohort design that control for potential confounders are needed to further validate the findings.

Pregnancy and reproductive health in women with multiple sclerosis: an update

PURPOSE OF REVIEW

Multiple sclerosis (MS) is a chronic immune-mediated, inflammatory, neuro-degenerative disease of the central nervous system, prevalent in women of reproductive age. Today, many women want to start a family after MS diagnosis. There are over 20 treatments for MS, and safely navigating family planning is important. We review updated information on family planning, preconception, and peri-partum considerations, and reproductive concerns in special populations with MS.

RECENT FINDINGS

There are no MS-related restrictions on any available and appropriate contraceptive method in women with MS. The question of MS and pregnancy outcomes following assisted reproduction, remains somewhat unsettled. In many studies, no elevated relapse risk is confirmed regardless of the type of fertility treatment. MRI status may offer better assessment of postpartum disease stability than relapse rate alone. Ongoing effective MS treatments during fertility assistance and before pregnancy, can further reduce the relapse risk. B-cell depleting therapies are emerging as safe and effective treatments for peripartum MS patients.

SUMMARY

Patients with MS should receive accurate support and counseling related to their reproductive options. The general outlook on pregnancy and MS remains positive. The ever-increasing therapeutic complexity of MS calls for ongoing education and updated guidance for neuroimmunology and obstetrics healthcare providers.

Practical Considerations for Managing Pregnancy in Patients With Multiple Sclerosis: Dispelling the Myths

Purpose of Review

Lack of consistent data and guidance have led to variations between clinicians in the management of pregnancy in women with multiple sclerosis (MS). Pregnant and/or lactating women are often excluded from clinical trials conducted in MS, and thus, the labeling for most disease-modifying therapies (DMTs) excludes use during pregnancy. This has led to heterogeneity in interpretation and labeling regarding the safety of DMTs during pregnancy and lactation and the required preconception washout periods. This review identifies key themes where there is conflicting information surrounding family planning and pregnancy in MS, focusing on the most common discussion points between physicians and patients during preconception planning, pregnancy, postpartum, and lactation. The goal was to inform the patient-physician conversation and provide best practice recommendations based on expert clinical expertise and experience.

Recent Findings

We outline the latest evidence-based data for DMT use during pregnancy and lactation, the effect of MS on fertility and fertility treatments, the risk of adverse pregnancy and delivery outcomes, the risk of postpartum relapse, and immunization and clinical imaging safety during pregnancy and breastfeeding.

Summary

Management of family planning and pregnancy in patients with MS requires the most current information. Health care providers should discuss family planning early and frequently with patients with MS, and partners where practicable. Because management of pregnant people with MS will often require a risk/benefit analysis of their needs, shared decision-making in family planning discussions is emphasized. Additional data are needed for specific and underrepresented populations with MS (e.g., single parents or those from the LGBTQ+ community) and those at risk of racial and socioeconomic disparities in care. Pregnancy registries and the design and conduct of clinical trials focused on pregnant and lactating patients should provide additional data to guide the ongoing management of patients with MS.

A case-control study characterizing polydactyly risk factors in Bogotá and Cali, Colombia between 2002 and 2020

BACKGROUND

Polydactyly is a congenital abnormality characterized by the presence of additional fingers on one or more extremities. In Colombia, polydactyly accounted for 17% of musculoskeletal congenital abnormalities in 2021, with a prevalence of 6.03 per 10,000 live births. The purpose of this study was to determine the prevalence of polydactyly and identify associated risk factors in Bogotá and Cali, Colombia, from 2002 to 2020.

METHODS

A retrospective case-control study design was employed, analyzing data from birth defect reports provided by the Program for the Prevention and Follow-up of Congenital Defects and Orphan Diseases surveillance system. Cases included live births or stillbirths with polydactyly, while controls consisted of infants without congenital abnormality, matched in terms of birth date and hospital. Prevalence of polydactyly was calculated and risk factors were assessed through odds ratios obtained by logistic regression models, considering a 95% confidence interval.

RESULTS

Among the 558,255 births included in the study, 848 cases of polydactyly were identified, resulting in a prevalence rate of 15.19 per 10,000 live births. Risk factors associated with polydactyly included male newborn sex, pregestational diabetes, and a family history of malformation among first-degree relatives.

CONCLUSION

These findings highlight the importance a surveillance system aimed to characterize populations with congenital abnormalities, providing a better option for analyzing risk factors, help improving prevention, diagnosis, notification, and optimal treatment in patients.

[The effect of pregnancy on multiple sclerosis]

Planning for pregnancy and possibility of disease modifying treatment (DMTs) is an important question in female patients of reproductive age who suffer from multiple sclerosis (MS). The frequency of refusals to plan pregnancy is 14%. This is due to numerous concerns about the course of pregnancy, its outcomes, as well as the possible effect of DMTs on the fetus and the probability of disease transmission to a child. The article discusses immunological reactions taking place in MS patients during pregnancy, which are protective in its nature. Data for all groups of DMTs regarding pregnancy planning, possible risks of their impact on fertility and teratogenicity is presented.

Adverse effects of immunotherapies for multiple sclerosis: a network meta-analysis

BACKGROUND

Multiple sclerosis (MS) is a chronic disease of the central nervous system that affects mainly young adults (two to three times more frequently in women than in men) and causes significant disability after onset. Although it is accepted that immunotherapies for people with MS decrease disease activity, uncertainty regarding their relative safety remains.

OBJECTIVES

To compare adverse effects of immunotherapies for people with MS or clinically isolated syndrome (CIS), and to rank these treatments according to their relative risks of adverse effects through network meta-analyses (NMAs).

SEARCH METHODS

We searched CENTRAL, PubMed, Embase, two other databases and trials registers up to March 2022, together with reference checking and citation searching to identify additional studies.

SELECTION CRITERIA

We included participants 18 years of age or older with a diagnosis of MS or CIS, according to any accepted diagnostic criteria, who were included in randomized controlled trials (RCTs) that examined one or more of the agents used in MS or CIS, and compared them versus placebo or another active agent. We excluded RCTs in which a drug regimen was compared with a different regimen of the same drug without another active agent or placebo as a control arm.

DATA COLLECTION AND ANALYSIS

We used standard Cochrane methods for data extraction and pairwise meta-analyses. For NMAs, we used the netmeta suite of commands in R to fit random-effects NMAs assuming a common between-study variance. We used the CINeMA platform to GRADE the certainty of the body of evidence in NMAs. We considered a relative risk (RR) of 1.5 as a non-inferiority safety threshold compared to placebo. We assessed the certainty of evidence for primary outcomes within the NMA according to GRADE, as very low, low, moderate or high.

MAIN RESULTS

This NMA included 123 trials with 57,682 participants. Serious adverse events (SAEs) Reporting of SAEs was available from 84 studies including 5696 (11%) events in 51,833 (89.9%) participants out of 57,682 participants in all studies. Based on the absolute frequency of SAEs, our non-inferiority threshold (up to a 50% increased risk) meant that no more than 1 in 18 additional people would have a SAE compared to placebo. Low-certainty evidence suggested that three drugs may decrease SAEs compared to placebo (relative risk [RR], 95% confidence interval [CI]): interferon beta-1a (Avonex) (0.78, 0.66 to 0.94); dimethyl fumarate (0.79, 0.67 to 0.93), and glatiramer acetate (0.84, 0.72 to 0.98). Several drugs met our non-inferiority criterion versus placebo: moderate-certainty evidence for teriflunomide (1.08, 0.88 to 1.31); low-certainty evidence for ocrelizumab (0.85, 0.67 to 1.07), ozanimod (0.88, 0.59 to 1.33), interferon beta-1b (0.94, 0.78 to 1.12), interferon beta-1a (Rebif) (0.96, 0.80 to 1.15), natalizumab (0.97, 0.79 to 1.19), fingolimod (1.05, 0.92 to 1.20) and laquinimod (1.06, 0.83 to 1.34); very low-certainty evidence for daclizumab (0.83, 0.68 to 1.02). Non-inferiority with placebo was not met due to imprecision for the other drugs: low-certainty evidence for cladribine (1.10, 0.79 to 1.52), siponimod (1.20, 0.95 to 1.51), ofatumumab (1.26, 0.88 to 1.79) and rituximab (1.01, 0.67 to 1.52); very low-certainty evidence for immunoglobulins (1.05, 0.33 to 3.32), diroximel fumarate (1.05, 0.23 to 4.69), peg-interferon beta-1a (1.07, 0.66 to 1.74), alemtuzumab (1.16, 0.85 to 1.60), interferons (1.62, 0.21 to 12.72) and azathioprine (3.62, 0.76 to 17.19). Withdrawals due to adverse events Reporting of withdrawals due to AEs was available from 105 studies (85.4%) including 3537 (6.39%) events in 55,320 (95.9%) patients out of 57,682 patients in all studies. Based on the absolute frequency of withdrawals, our non-inferiority threshold (up to a 50% increased risk) meant that no more than 1 in 31 additional people would withdraw compared to placebo. No drug reduced withdrawals due to adverse events when compared with placebo. There was very low-certainty evidence (meaning that estimates are not reliable) that two drugs met our non-inferiority criterion versus placebo, assuming an upper 95% CI RR limit of 1.5: diroximel fumarate (0.38, 0.11 to 1.27) and alemtuzumab (0.63, 0.33 to 1.19). Non-inferiority with placebo was not met due to imprecision for the following drugs: low-certainty evidence for ofatumumab (1.50, 0.87 to 2.59); very low-certainty evidence for methotrexate (0.94, 0.02 to 46.70), corticosteroids (1.05, 0.16 to 7.14), ozanimod (1.06, 0.58 to 1.93), natalizumab (1.20, 0.77 to 1.85), ocrelizumab (1.32, 0.81 to 2.14), dimethyl fumarate (1.34, 0.96 to 1.86), siponimod (1.63, 0.96 to 2.79), rituximab (1.63, 0.53 to 5.00), cladribine (1.80, 0.89 to 3.62), mitoxantrone (2.11, 0.50 to 8.87), interferons (3.47, 0.95 to 12.72), and cyclophosphamide (3.86, 0.45 to 33.50). Eleven drugs may have increased withdrawals due to adverse events compared with placebo: low-certainty evidence for teriflunomide (1.37, 1.01 to 1.85), glatiramer acetate (1.76, 1.36 to 2.26), fingolimod (1.79, 1.40 to 2.28), interferon beta-1a (Rebif) (2.15, 1.58 to 2.93), daclizumab (2.19, 1.31 to 3.65) and interferon beta-1b (2.59, 1.87 to 3.77); very low-certainty evidence for laquinimod (1.42, 1.01 to 2.00), interferon beta-1a (Avonex) (1.54, 1.13 to 2.10), immunoglobulins (1.87, 1.01 to 3.45), peg-interferon beta-1a (3.46, 1.44 to 8.33) and azathioprine (6.95, 2.57 to 18.78); however, very low-certainty evidence is unreliable. Sensitivity analyses including only studies with low attrition bias, drug dose above the group median, or only patients with relapsing remitting MS or CIS, and subgroup analyses by prior disease-modifying treatments did not change these figures. Rankings No drug yielded consistent P scores in the upper quartile of the probability of being better than others for primary and secondary outcomes.

AUTHORS' CONCLUSIONS

We found mostly low and very low-certainty evidence that drugs used to treat MS may not increase SAEs, but may increase withdrawals compared with placebo. The results suggest that there is no important difference in the occurrence of SAEs between first- and second-line drugs and between oral, injectable, or infused drugs, compared with placebo. Our review, along with other work in the literature, confirms poor-quality reporting of adverse events from RCTs of interventions. At the least, future studies should follow the CONSORT recommendations about reporting harm-related issues. To address adverse effects, future systematic reviews should also include non-randomized studies.

Disease-Modifying Therapies (DMTs) in Pregnant and Lactating Women with Multiple Sclerosis: Analysis of Real-World Data from EudraVigilance Database

(1) Background: The purpose of study was to compare the safety profile of glatiramer with natalizumab, alemtuzumab and ocrelizumab in pregnant and lactating women affected by multiple sclerosis (MS). (2) Methods: Individual case safety reports (ICSRs) were retrieved from the European spontaneous reporting system database (EudraVigilance). The reporting odds ratios (RORs) were computed to compare the reporting probability of events between natalizumab, alemtuzumab and ocrelizumab vs. glatiramer. (3) Results: A total of 1236 ICSRs reporting at least one DMT as a suspected drug were selected. More adverse drug reactions (ADRs) unrelated to pregnancy and breastfeeding (n = 1171; 32.6%) were reported than ADRs specific to pregnancy and breastfeeding (n = 1093; 30.4%). The most frequently reported unrelated ADR was MS relapse. Alemtuzumab and natalizumab seem to have a lower reporting probability of MS relapse compared to glatiramer (ROR 0.17, 95% CI 0.07-0.45 and ROR 0.34, 95% CI 0.20-0.57). Among pregnancy- and breastfeeding-related ADRs, the first most reported event was spontaneous abortion (n = 321; 8.9%). Natalizumab and ocrelizumab were associated with a higher reporting probability of spontaneous abortion compared to glatiramer (ROR 2.22, 95% CI 1.58-3.12; ROR 2.18, 95% CI 1.34-3.54, respectively), while alemtuzumab had a lower reporting frequency (ROR 0.32, 95% CI 0.17-0.60). (4) Conclusions: This study did not suggest any strong or new insights for DMTs in this special subpopulation. However, further studies need to be performed.

Multiple sclerosis and pregnancy: Pathogenesis, influencing factors, and treatment options

Multiple sclerosis (MS) is an autoimmune-mediated degenerative disease of the central nervous system, characterized by inflammatory demyelination. It is primarily found in women of childbearing age, making pregnancy a significant concern for both patients with MS and clinicians. To assist these patients in achieving their desire for pregnancy, reducing MS relapses during all stages of pregnancy, preventing the progression of MS, mitigating the impact of MS treatment on the course and outcome of pregnancy, and a thorough understanding of the relationship between pregnancy and MS, as well as specific management and the application of relevant medications for MS patients at each stage of pregnancy, are essential. This article provides an update on pregnancy-related issues in women with MS, including the general recommendations for management at each stage of pregnancy.

Fertility, pregnancy and childbirth in women with multiple sclerosis: a population-based study from 2018 to 2020

BACKGROUND

We aim to evaluate whether fertility, pregnancy, delivery and breastfeeding have been actually improving in women with multiple sclerosis (MS), compared with general population, and in relation to treatment features.

METHODS

We included 2018-2020 population-level healthcare data on women with MS living in the Campania region (Italy). Fertility, pregnancy and delivery outcomes were obtained from Certificate of Delivery Assistance; breastfeeding was collected up to 6 months after delivery by trained personnel.

RESULTS

Out of 2748 women with MS in childbearing age, 151 women delivered 156 babies. Fertility rate was 0.58 live births per woman with MS, compared with 1.29 in Campania region and 1.25 in Italy. Disease-modifying treatment (DMT) continuation during pregnancy was associated with lower birth weight (coeff -107.09; 95% CI -207.91 to -6.26; p=0.03). Exposure to DMTs with unknown/negative effects on pregnancy was associated with birth defects (OR 8.88; 95% CI 1.35 to 58.41; p=0.02). Birth defects occurred in pregnancies exposed to dimethyl fumarate (2/21 exposed pregnancies), fingolimod (1/11 exposed pregnancies) and natalizumab (2/30 exposed pregnancies). After delivery, 18.8% of women with MS were escalated of DMT efficacy, while 50.7% started on same/similar-efficacy DMTs, and 30.5% did not receive DMT. The probability of breastfeeding was higher in women who were treated with breastfeeding-safe DMTs (OR 5.57; 95% CI 1.09 to 28.55; p=0.03).

CONCLUSIONS

Fertility rate in women with MS remains below the general population. Family planning and subsequent DMT decisions should aim to achieve successful pregnancy, delivery and breastfeeding outcomes, while controlling disease activity.

Motherhood Experiences of Women With Multiple Sclerosis: A Thematic Meta-Synthesis

The nature and unpredictable prognosis of multiple sclerosis (MS) make pregnancy and motherhood challenging experiences for women with the disease. Using the thematic synthesis method, we aimed to systematically interpret and synthesize data from qualitative research examining the motherhood experiences of women with MS. The analyses revealed three analytical themes: "Deciding to become a mother," "The journey during pregnancy, childbirth, and the postpartum period," and "Surviving as a mother with multiple sclerosis." For women with MS, being a mother, pregnancy, and the postpartum period were complex and challenging issues. During this period, most women felt lonely, thought that they were contradictory and inadequately informed by healthcare professionals and that they could not get enough social support. Despite all the difficulties, being a mother was a source of motivation for them. This meta-synthesis study provides healthcare professionals with an in-depth understanding of the experiences of women with MS with pregnancy, childbirth, postpartum period, and motherhood from their perspectives.

Family planning considerations in people with multiple sclerosis

Multiple sclerosis is often diagnosed in patients who are planning on having children. Although multiple sclerosis does not negatively influence most pregnancy outcomes, less is known regarding the effects of fetal exposure to novel disease-modifying therapies (DMTs). The withdrawal of some DMTs during pregnancy can modify the natural history of multiple sclerosis, resulting in a substantial risk of pregnancy-related relapse and disability. Drug labels are typically restrictive and favour fetal safety over maternal safety. Emerging data reporting outcomes in neonates exposed to DMTs in utero and through breastfeeding will allow for more careful and individualised treatment decisions. This emerging research is particularly important to guide decision making in women with high disease activity or who are treated with DMTs associated with risk of discontinuation rebound. As increasing data are generated in this field, periodic updates will be required to provide the most up to date guidance on how best to achieve multiple sclerosis stability during pregnancy and post partum, balanced with fetal and newborn safety.

Inflammatory bowel disease in pregnancy and breastfeeding

Inflammatory bowel disease (IBD) has a peak age of diagnosis before the age of 35 years. Concerns about infertility, adverse pregnancy outcomes, and heritability of IBD have influenced decision-making for patients of childbearing age and their care providers. The interplay between the complex physiology in pregnancy and IBD can affect placental development, microbiome composition and responses to therapy. Current evidence has shown that effective disease management, including pre-conception counselling, multidisciplinary care and therapeutic agents to minimize disease activity, can improve pregnancy outcomes. This Review outlines the management of IBD in pregnancy and the safety of IBD therapies, including novel agents, with regard to both maternal and fetal health. The vast majority of IBD therapies can be used with low risk during pregnancy and lactation without substantial effects on neonatal outcomes.

Saudi Consensus Recommendations on the Management of Multiple Sclerosis: Family Planning within the Management of MS

This review article addresses the complex issues faced by individuals with Multiple Sclerosis (MS) who are planning a family, becoming pregnant, or wishing to breastfeed their baby. Recommendations and guidelines were discussed and agreed upon by neurologists, neuroradiologists, nurses, and pharmacists involved in the management of MS in the Kingdom of Saudi Arabia (KSA). MS itself does not harm a pregnancy, and people with MS of childbearing age can be encouraged to enjoy family life. Family planning should be a part of the initial conversation with a newly diagnosed patient of childbearing age. Interferons and glatiramer acetate can be continued throughout pregnancy and can be administered during breastfeeding if the benefits outweigh the risks. These DMTs may be considered for a woman with well-controlled MS who is planning a pregnancy or otherwise not using contraception, according to an individualized risk-benefit analysis. The use of contraception should be maintained during the administration of other disease-modifying therapies (DMTs). Natalizumab can be administered at a reduced administration frequency to women with high MS disease activity up to 30 weeks gestation (this agent may induce hematological abnormalities in the fetus). Other DMTs should be withdrawn for variable periods before contraception is stopped and immediately after the discovery of a pregnancy (beware of rebound disease activity after withdrawing natalizumab or fingolimod). Resumption of treatment should not be delayed in women at risk of relapse during the postpartum period and especially in those who do not wish to breastfeed.

The Canadian Multiple Sclerosis Pregnancy Study: First-trimester miscarriages in women with multiple sclerosis

BACKGROUND

There is increasing need for evidence-based data on reproduction for women with multiple sclerosis (MS). First-trimester (first 13 weeks) miscarriages are relatively common in the general population. It is therefore important to have information on the frequency with which this occurs in women with MS.

METHODS

The Canadian Multiple Sclerosis Pregnancy Study (CANPREG-MS) is a prospective study on women with MS who are pregnant or actively trying to conceive. As far as we are aware, this is the first study on miscarriages for this population that takes into account each woman's entire pregnancy history (i.e. before and after the MS diagnosis as well as during enrollment in CANPREG-MS).

RESULTS

There were 208 pregnancies during the study and 36 resulted in first-trimester miscarriage for a rate of 17.31%, within the expected range of 15%-20% for the general population.

CONCLUSIONS

CANPREG-MS provides real world data that there does not appear to be an increase in first-trimester miscarriages for women with MS. This information will be helpful to women with MS and their healthcare providers.

Cladribine and pregnancy in women with multiple sclerosis: The first cohort study

BACKGROUND

As cladribine is contraindicated in pregnancy, data to pregnancy outcomes and disease control are scarce.

OBJECTIVE

To investigate the effects of Cladribine use, in the last 6 months prior (56.4%) to or after (43.6%) the last menstrual period in a population of women with multiple sclerosis, on pregnancy outcomes and relapse rate during pregnancy and postpartum.

METHODS

Data were collected prospectively in regular telephone interviews.

RESULTS

Of 39 pregnancies, 27 babies have been born so far and one major congenital malformation occurred. Disease control was excellent among the cohort both during pregnancy and the postpartum period, with only one relapse recorded in each time period.

CONCLUSIONS

Although most newborns are healthy, reinforced councelling on effective contraception 6 months after the last cladribine dosing is necessary.

Maternal Multiple Sclerosis and Health Outcomes Among the Children: A Systematic Review

Objective

To summarize the available literature and provide an overview of in utero exposure to maternal multiple sclerosis (MS) and the influence on offspring health outcomes.

Methods

We conducted a systematic review by searching Embase, Medline and PubMed.gov databases, and we used covidence.org to conduct a thorough sorting of the articles into three groups; 1) women with MS and the influence on birth outcomes; 2) women with MS treated with disease-modifying therapy (DMT) during pregnancy and the influence on birth outcomes; and 3) women with MS and the influence on long-term health outcomes in the children.

Results

In total, 22 cohort studies were identified. Ten studies reported on MS without DMT and compared with a control group without MS, and nine studies on women with MS and DMT prior to or during pregnancy met the criteria. We found only four studies reporting on long-term child health outcomes. One study had results belonging to more than one group.

Conclusion

The studies pointed towards an increased risk of preterm birth and small for gestational age among women with MS. In terms of women with MS treated with DMT prior to or during pregnancy, no clear conclusions could be reached. The few studies on long-term child outcomes all had different outcomes within the areas of neurodevelopment and psychiatric impairment. In this systematic review, we have highlighted the research gaps on the impact of maternal MS on offspring health.

Intravenous immunoglobulin treatment during pregnancy and the post-partum period in women with multiple sclerosis: A prospective analysis

Background

Relapsing-remitting multiple sclerosis (RRMS) affects predominantly young women within reproductive years. As an increased risk of relapses is known to occur during the post-partum period, it is important to consider treatment options.

Aim

Evaluate the effects of intravenous immunoglobulins (IVIg) to prevent post-partum relapses.

Methods

We prospectively followed 198 pregnant female RRMS patients, 67 treated with IVIg during pregnancy and the three months post-partum, and 131 untreated patients that served as controls.

Results

During the pre-gestation year, 41.4% were treated with immunomodulatory drugs, and 28.3% experienced a relapse. During pregnancy and the post-partum period, the number of relapsing patients significantly decreased in the IVIg group (37.3%, 10.4%, 8.9%, respectively, p = 0.0003), while no significant change was observed in the untreated group (23.7%, 17.6%, and 22.1%). During the three-month post-partum period, there were only mild and moderate relapses in the IVIg group, while in the untreated group, there were also severe relapses. Stepwise logistic regression that assessed the relation between three-month post-partum relapse and explanatory variables demonstrated that untreated patients had increased risk for post-partum relapse (odds ratio = 4.6, 95% CI [1.69, 12.78], p = 0.033).

Conclusions

IVIg treatment proved efficient to reduce the rate and severity of relapses during pregnancy and the three-month post-partum.

Pregnancy and multiple sclerosis: 2022 recommendations from the French multiple sclerosis society

OBJECTIVE

The objective of this study was to develop evidence-based recommendations on pregnancy management for persons with multiple sclerosis (MS).

BACKGROUND

MS typically affects young women in their childbearing years. Increasing evidence is available to inform questions raised by MS patients and health professionals about pregnancy issues.

METHODS

The French Group for Recommendations in Multiple Sclerosis (France4MS) reviewed PubMed and university databases (January 1975 through June 2021). The RAND/UCLA appropriateness method was developed to synthesise the scientific literature and expert opinions on healthcare topics; it was used to reach a formal agreement. Fifty-six MS experts worked on the full-text review and initial wording of recommendations. A group of 62 multidisciplinary healthcare specialists validated the final proposal of summarised evidence.

RESULTS

A strong agreement was reached for all 104 proposed recommendations. They cover diverse topics, such as pregnancy planning, follow-up during pregnancy and postpartum, delivery routes, locoregional analgesia or anaesthesia, prevention of postpartum relapses, breastfeeding, vaccinations, reproductive assistance, management of relapses and disease-modifying treatments.

CONCLUSION

The 2022 recommendations of the French MS society should be helpful to harmonise counselling and treatment practice for pregnancy in persons with MS, allowing for better and individualised choices.

Fertility preferences and unmet need for family planning in women with multiple sclerosis

BACKGROUND

Most women with multiple sclerosis (MS) have childbearing potential. Although fertility and pregnancy are not affected by MS, the fertility preferences of women with MS can change due to the risk of complications for the mother and/or adverse pregnancy outcomes resulting from the disease or its treatment.

OBJECTIVES

To describe fertility preferences (FPs) and their associated factors, to estimate the Unmet Need for Family Planning (UNFP), use of contraceptives, and history of exposure to disease-modifying therapies (DMTs) during pregnancy in women with MS.

METHODS

In a cross-sectional observational study, a random sample of women with MS were surveyed with the FP subset of the Demographic and Health Survey of Colombia. Factors associated with FP were evaluated through bivariate and logistic regression analysis. The proportion of pregnancies exposed to DMTs, UNFP, and use of contraceptives was estimated.

RESULTS

Of the 141 women interviewed, 101 women had childbearing potential, of whom 49 did not want to have children, 38 were sterilized, 33 wanted to have more children, 19 were undecided, and 2 stated they were unable to bear children (menopause or hysterectomy). No MS-related variables were associated with the preference to have more children. Age (OR 0.91; 95% CI 0.84-0.98) and the number of children (OR 0.23; 95% CI 0.09-0.58) decreased the likelihood of desire for children. Of 116 sexually active women, 87.06 % (101) were using contraceptives, and among them, four were using fertility awareness methods and withdrawal. The UNFP was estimated at 6.03% and was not significantly different from the general population. Eighty-two pregnancies were identified, of which 48 occurred after diagnosis, and 25 were exposed to DMTs.

CONCLUSION

Fertility preference in women with MS is not associated with clinical variables. A large proportion of women choose not to have children and prefer to use permanent contraceptive methods. Although the frequency of contraceptive use was high, some women have the UNFP and use low-efficacy contraceptive methods, which may result in unplanned pregnancies.

Adverse Obstetric Outcomes in Pregnant Women Using Natalizumab for the Treatment of Multiple Sclerosis: A Systematic Review

Multiple sclerosis is a common disease in women of childbearing age, characterized by demyelination of the central nervous system. Among the different treatment options available, disease-modifying therapies (DMTs) are the most efficacious, and natalizumab (NAT) is an injectable DMT best for relapsing-remitting multiple sclerosis. However, it comes under pregnancy category C drug classification. This systematic review aims to analyze the adverse outcomes of using NAT during pregnancy.

PubMed/Medline, PubMed Central (PMC), ScienceDirect, and Google Scholar were the databases used to search for articles. Appropriate keywords and Medical Subject Headings (MeSH) strategy were used to identify relevant articles. Articles were then screened using inclusion/exclusion criteria followed by the title and abstract screening. The Joanna Briggs Institute (JBI) quality appraisal tools were used for quality check, and nine articles were finalized for review.

NAT suspension during pregnancy is shown to have a high risk of disease relapse. Despite the risk of mild hematological abnormalities in the newborn and the risk of spontaneous abortions at the same rate as that of the general population, NAT use can be considered safe in pregnancy. These adverse outcomes can be minimized by strict monitoring of patients. Studies of better quality with larger sample sizes are needed for further investigation.

Exposure to natalizumab throughout pregnancy: effectiveness and safety in an Italian cohort of women with multiple sclerosis

OBJECTIVE

Assessing the risk of clinical and radiological reactivation during pregnancy and post partum in women with multiple sclerosis (MS) treated with natalizumab (NTZ) throughout pregnancy (LONG_EXP) compared with women interrupting treatment before (NO_EXP) and within >-30 days and ≤90 days from conception (SHORT_EXP), and describing newborns' outcomes.

METHODS

Maternal clinical and radiological outcomes and obstetric and fetal outcomes were retrospectively collected and compared among groups (NO_EXP, SHORT_EXP, LONG_EXP). Predictors of clinical and radiological reactivation were investigated through univariable and multivariable analysis.

RESULTS

170 eligible pregnancies from 163 women referring to 29 Italian MS centres were included. Annualised relapse rate (ARR) was significantly lower in LONG_EXP (n=66, 0.02 (0.001-0.09)) compared with NO_EXP (n=31, 0.43 (0.21-0.75), p=0.002) and SHORT_EXP (n=73, 0.46 (0.30-0.66), p=0.0004) during pregnancy, and in LONG_EXP (0.12 (0.05-0.24)) compared with SHORT_EXP (0.30 (0.17-0.50), p=0.008) during post partum. Gadolinium-enhancing (Gd+) lesions were less frequent in LONG_EXP (n=6/50, 2.00%) compared with NO_EXP (n=9/21, 42.86%) and SHORT_EXP after delivery (n=17/49, 34.69%, p=0.010).Delaying NTZ resumption after delivery significantly increased the risk of relapses (OR=1.29 (95% CI 1.07 to 1.57), p=0.009) and Gd+ lesions (OR=1.49 (95% CI 1.17 to 1.89, p=0.001). Newborns' weight, length, head circumference and gestational age did not differ among groups after adjusting for confounders. Anaemia was tracked in 4/69 LONG_EXP newborns. Congenital anomaly rate was within the expected range for the untreated MS population.

CONCLUSIONS

Our findings indicate that in women with MS treated with NTZ before conception, continuation of NTZ throughout pregnancy and its early resumption after delivery mitigate the risk of clinical and radiological reactivation. This approach has no major impact on newborns' outcomes.

Ocrelizumab during pregnancy and lactation: Rationale and design of the MINORE and SOPRANINO studies in women with MS and their infants

BACKGROUND

Most disease-modifying therapies (DMTs) approved for the treatment of multiple sclerosis (MS) are not recommended during pregnancy, and discouraged while breastfeeding. However, discontinuation of some DMTs before pregnancy can leave women vulnerable to MS relapses. Although available data on ocrelizumab suggest no increased risk in terms of pregnancy or neonatal outcomes, it is unknown whether ocrelizumab transfers across the placenta or is absorbed through breastmilk; and if so, whether infant B cell development, immune responses or growth and development are affected. This manuscript describes two studies designed to address these uncertainties.

METHODS/DESIGN

MINORE and SOPRANINO are multicentre open-label studies. MINORE, which addresses placental transfer, will recruit 44 women with MS or clinically isolated syndrome (CIS) exposed to ocrelizumab between 6 months before the last menstrual period (LMP) to the end of the first trimester. It will evaluate pharmacodynamic effects of potential in utero exposure through the proportion of infants with B cell numbers below lower limit of normal (LLN) at week 6 of life (primary endpoint); as well as through vaccine-induced antibody responses (reflecting B cell function) during the first year of life. Placental transfer will be assessed through measurement of ocrelizumab concentrations in paired samples at delivery (maternal blood as well as umbilical cord blood), and infant serum at week 6 of life. SOPRANINO, which evaluates breastmilk transfer, will recruit 20 women with MS or CIS who resume or initiate ocrelizumab treatment while breastfeeding. The effect of potential exposure through breastmilk will be assessed through the proportion of infants with B cell levels below LLN at 30 days after the mother's first post-partum ocrelizumab infusion (co-primary endpoint). Infant exposure via breastmilk will be assessed through ocrelizumab average daily infant dose in breastmilk over 60 days after the same infusion (co-primary endpoint). Vaccine-induced responses will be measured as in MINORE. Both studies will also measure infant growth and development over the first year of life and safety outcomes in both mothers and infants. All analyses will be descriptive, under an estimand framework.

DISCUSSION

Both studies are designed to mimic real-world clinical practice. Treatment decisions for ocrelizumab are independent from study participation; as such, these studies will recruit women who decide, along with their physicians, to continue their pregnancies despite potential in utero exposure (for MINORE); or to breastfeed while under ocrelizumab treatment (for SOPRANINO). MINORE is the first prospective study to measure placental transfer of any DMT in MS, and to perform comprehensive assessments in infants and mothers. Results may inform the optimal contraception period for women treated with ocrelizumab who are planning a pregnancy. Similarly, SOPRANINO is the first prospective study to measure pharmacodynamic effects of ocrelizumab in breastfed infants in addition to pharmacokinetic parameters in breastmilk. SOPRANINO may establish whether breastfeeding is safe for infants whose mothers received treatment with ocrelizumab.

CONCLUSION

By collecting detailed pharmacokinetic, pharmacodynamic and safety information, MINORE and SOPRANINO will contribute to understanding the risk/benefit of ocrelizumab in pregnant and lactating women with MS.

A systematic review of relapse rates during pregnancy and postpartum in patients with relapsing multiple sclerosis

Introduction:

Pregnancy is widely accepted as a period when relapses of multiple sclerosis (MS) are decreased, with an increased risk of relapse in the first months postpartum. This systematic review evaluated relapses during pregnancy and postpartum, according to disease-modifying therapy (DMT) exposure before, during, and after pregnancy, and the influence of DMT on these outcomes.

Methods:

We searched Medline and EMBASE to identify relevant publications from November 2009 to 2019 along with references lists of selected articles. Publications were filtered and assessed by two independent reviewers to ensure appropriate data extraction.

Results:

Of 469 articles identified, 28 were included for analysis including 4739 pregnancies in 5324 patients. All five studies comparing natalizumab or fingolimod (high-efficacy DMTs) use preconception versus interferon beta, glatiramer acetate, or dimethyl fumarate, or no DMT suggested that there was a greater risk of relapse during pregnancy following withdrawal of the high-efficacy DMTs. Of 10 studies evaluating relapses during pregnancy, five studies found that continuing DMTs into early pregnancy reduced relapses compared to discontinuing treatment. DMT exposure preconception generally had no effect on postpartum relapses versus no DMT; however, natalizumab or fingolimod use preconception was associated with postpartum relapse versus no high-efficacy DMT in one study. DMT exposure during pregnancy was associated with fewer postpartum relapses versus no DMT exposure in four of seven studies, while three found no difference between groups.

Conclusion:

Results of this systematic review concerning women with relapsing MS show a complex and often conflicting picture regarding DMT exposure and relapses during and after pregnancy. Although our data are limited by variability between studies, there is some evidence suggesting the use of natalizumab or fingolimod preconception is associated with increased risk of relapses during pregnancy, highlighting the need for effective disease-management strategies in these especially high-risk patients.

Pregnancy in women with multiple sclerosis in France from 2010 to 2015: Incidence, outcomes, and exposure to disease-modifying therapies

BACKGROUND

Multiple sclerosis (MS) is usually diagnosed between 20-40 years old, when women often plan to have children.

OBJECTIVE

Our objectives were to estimate pregnancy incidence rates in women with multiple sclerosis (MS), and to describe the use of disease-modifying therapies (DMTs) before conception and during pregnancy, and pregnancy outcomes.

METHODS

This retrospective cohort study included all 15- to 49-year-old women with MS in the French national health insurance database over 2010-2015. A pregnancy was exposed if a DMT reimbursement claim occurred during pregnancy or in the 14 preceding days. We used zero-inflated negative binomial (ZINB) regression models to estimate incidence rates and ordinal and multinomial regression models to estimate DMT exposure and pregnancy outcomes.

RESULTS

The pregnancy incidence rate was 4.5 per 100 person-years. The probability of having a DMT-exposed pregnancy increased from 0.22 in 2010 to 0.30 in 2015. The probability of live birth was 0.72 (95% CI = 0.70-0.74) for exposed pregnancies (varied considerably among DMTs), 0.77 (95% CI = 0.76-0.79) without treatment, and 0.81 (95% CI = 0.79-0.83) if treatment was stopped within the previous year.

CONCLUSION

In this population-based study, we showed an increase of exposed pregnancies over time, beta-interferon and glatiramer acetate being the most used DMTs and associated with the highest probabilities of live birth. Interrupted exposed pregnancies may reflect undesired pregnancies or fear of an adverse outcome, while recent DMT stop probably reflects pregnancy planning.

Does multiple sclerosis increase the risk of preeclampsia? A systematic review and meta-analysis

Objective: We investigated, via systematic review and meta-analysis, whether multiple sclerosis (MS) is associated with the risk of preeclampsia (PE).Methods: From the eligible studies, we pooled odds ratios (ORs) and confidence intervals (CIs) of PE for pregnant women with MS compared with pregnant women without it using the fixed-effects model. The I² measured heterogeneity between studies.Results: Eight eligible studies (9 cohorts) were included. Pregnant women with MS had no excess risk of PE compared with pregnant women without MS (pooled OR = 0.99, 95% CI: 0.89, 1.09; I² = 0.00%).Conclusion: MS is not associated with PE.

The Potential Preventive Effect of Pregnancy and Breastfeeding on Multiple Sclerosis

BACKGROUND

Multiple sclerosis (MS) is an inflammatory demyelinating chronic neurological disease that affects the central nervous system of young adults and their quality of life. Several studies have investigated the effects of pregnancy and breastfeeding on MS. However, the evidence regarding the influence of pregnancy and breastfeeding on MS is still accumulating. This review aimed to summarize the current evidence regarding the effects of pregnancy and breastfeeding on MS.

SUMMARY

A systematic electronic literature search of the PubMed and Embase databases was conducted to determine relevant published articles. The eligible studies were summarized and evaluated in tables. Key Messages: The majority of the studies indicated that pregnancy appears to lower the rate of MS relapses, particularly in the third trimester. The evidence regarding the effect of breastfeeding on MS remains inconsistent. Despite reports of negative obstetric outcomes in some pregnant women with MS, pregnancies in women with MS should not be categorized as high-risk pregnancies.

Anti-CD20 therapies and pregnancy in neuroimmunologic disorders: A cohort study from Germany

OBJECTIVE

To report pregnancy outcomes and disease activity (DA) in women with MS, neuromyelitis optica spectrum disorders (NMOSDs), and other neuroimmunologic diseases (ONID) after treatment with rituximab (RTX)/ocrelizumab (OCR) 12 months before or during pregnancy.

METHODS

Data were collected in the German MS and pregnancy registry and centers from the Neuromyelitis Optica Study Group. Sixty-eight known outcomes of 88 pregnancies from 81 women (64 MS, 10 NMOSD, and 7 ONID) were included and stratified in 3 exposure groups: >6M-group = RTX/OCR >6 but ≤12 months before the last menstrual period (LMP) (n = 8); <6M group = RTX/OCR <6 months before the LMP (n = 47); preg group = RTX/OCR after the LMP (n = 13).

RESULTS

Pregnancy outcomes were similar between groups, but significantly more preterm births (9.8% vs 45%) occurred after exposure during pregnancy. Overall, 2 major congenital abnormalities (3.3%), both in the preg group, were observed. Three women had severe infections during pregnancy. All women with MS (35) and 12/13 women with NMOSD, RTX/OCR exposure before the LMP and known pregnancy outcomes after gestational week 22 were relapse free during pregnancy. Five of 29 (17.2%) women with relapsing-remitting MS (RRMS) and 1 of 12 (8.3%) with NMOSD and at least 6 months postpartum follow-up experienced a relapse postpartum. Duration of RTX/OCR and early retreatment but not detection of B-cells were possible predictors for postpartum relapses in patients with RRMS/NMOSD.

CONCLUSIONS

Although RTX/OCR might be an interesting option for women with RRMS/NMOSD who plan to become pregnant to control DA, more data on pregnancy outcomes and rare risks are needed.