Vedolizumab Concentrations in Breast Milk: Results from a Prospective, Postmarketing, Milk-Only Lactation Study in Nursing Mothers with Inflammatory Bowel Disease

Navigating Reproductive Care in Patients With Inflammatory Bowel Disease: A Comprehensive Review

Inflammatory bowel disease [IBD] is often diagnosed in patients during their reproductive years. It is crucial that both healthcare providers and patients are adequately informed to avoid misguided decisions regarding family planning. One of the most important aspects during conception and pregnancy is to maintain disease remission, as disease activity is associated with adverse pregnancy outcomes. Apart from methotrexate, most conventional drugs used in IBD are considered low risk during conception and pregnancy. For newer agents, evidence is still limited. If needed, surgery must not be postponed and should ideally be performed in specialized centres. In most patients, delivery should be vaginal except for patients with complex perianal disease, with an ileoanal pouch anastomosis, or if there is an obstetric contraindication. In children exposed to biological treatments during pregnancy, the risk of infections appears to be low, and psychomotor development is probably not affected. Regarding immunizations, the standard vaccination schedule for inactivated vaccines should be followed for children exposed to biologics in utero. In the case of live vaccines, such as rotavirus, decisions should be individualized and take into consideration the risk-benefit ratio, particularly in developing countries. In this review, we provide a comprehensive and updated overview of aspects related to fertility, pregnancy, breastfeeding, and the impact on the care of children born to mothers with IBD. Both the available evidence and areas of uncertainty are discussed, with the goal of assisting healthcare professionals caring for IBD patients during this important stage of their lives.

On placental and lactational transfer of IgG-based therapeutic proteins - Current understanding and knowledge gaps from a clinical pharmacology perspective

Maternal medication use may expose the developing fetus through placental transfer or the infant through lactational transfer. Because pregnant and lactating individuals have been historically excluded from early drug development trials, there is often limited to no human data available to inform pharmacokinetics (PK) and safety in these populations at the time of drug approval. We describe the known mechanisms of placental or lactational transfer of IgG-based therapeutic proteins and use clinical examples to highlight the potential for fetal or infant exposure during pregnancy and lactation. Placental transfer of IgG-based therapeutic proteins may result in systemic exposure to the developing fetus. A lactational transfer may be associated with local gastrointestinal (GI) exposure in the infant and may also result in systemic exposure, although data are very limited as proteins have shown instability in the GI tract. Understanding of PK and pharmacodynamic (PD) effects of IgG-based therapeutic proteins in infants exposed in utero as well as the potential exposure through human milk and its clinical implications is critical for developing treatment strategies for pregnant or lactating individuals. We share the current knowledge gaps and considerations for future evaluations to inform PK, PD, and the safety of IgG-based therapeutic proteins for safe use during pregnancy and lactation. With the increasing use of IgG-based therapeutic proteins in treating chronic diseases during pregnancy and lactation, there is a need to improve the quantity and quality of data to inform the safe use in pregnant and lactating individuals.

Common Mistakes in Managing Patients with Inflammatory Bowel Disease

Introduction: Errors are very common in medical practice and in particular, in the healthcare of patients with inflammatory bowel disease (IBD); however, most of these can be prevented. Aim: To address common errors in the management of IBD. Methods: Our approach to this problem consists in identifying mistakes frequently observed in clinical practice (according to our experience) in the management of patients with IBD, then reviewing the scientific evidence available on the subject, and finally proposing the most appropriate recommendation for each case. Results: The most common mistakes in the management of IBD include those related to diagnosis and differential diagnosis, prevention, nutrition and diet, treatment with different drugs (mainly 5-aminosalicylates, corticosteroids, thiopurines, and anti-TNF agents), extraintestinal manifestations, anemia, elderly patients, pregnancy, and surgery. Conclusions: Despite the availability of guidelines for both disease management and preventive aspects of IBD care, a considerable variation in clinical practice still remains. In this review, we have identified common mistakes in the management of patients with IBD in clinical practice. There is a clear need for a greater dissemination of clinical practice guidelines among gastroenterologists and for the implementation of ongoing training activities supported by scientific societies. Finally, it is desirable to follow IBD patients in specialized units, which would undoubtedly be associated with higher-quality healthcare and a lower likelihood of errors in managing these patients.

Inflammatory Bowel Disease and Breastfeeding: A Narrative Review

Inflammatory bowel disease (IBD) frequently affects women of childbearing age who may consider breastfeeding. Although breastfeeding has numerous benefits, there remain concerns regarding the safety of breastfeeding among women with IBD. Breastfeeding is important in developing the immune system of infants and has been shown to protect against the development of IBD. The risk of developing an increase in disease activity postpartum is the same regardless of breastfeeding status. Most IBD medications are also considered safe in breastfeeding and have no major risks to infants. Despite this, breastfeeding rates remain low among women with IBD, mostly due to concerns about the safety of IBD therapy with breastfeeding. Many women self-discontinue their IBD medications to breastfeed, and there is often uncertainty among health professionals to make recommendations about therapy. Dedicated IBD clinics can greatly support mothers during pregnancy and breastfeeding periods to enhance their knowledge, optimize their medication adherence, and improve their postpartum outcomes. This review aims to provide the most recent evidence-based literature regarding the safety of breastfeeding in women with IBD and the current recommendations about medical therapies with breastfeeding.

New drugs for the treatment of IBD during conception, pregnancy, and lactation

The management of inflammatory bowel disease requires continuous medical therapy to achieve and maintain disease control. Thus, women can be exposed to different drugs during conception, pregnancy, and lactation with potentially harmful effects on the mother, foetus, or nursing infant. Conventional drugs and anti-tumour necrosis factor (TNF)-α are considered safe and can be maintained throughout all these phases. Emergent, although limited, data support safety of vedolizumab and ustekinumab, with pregnancy, as well as maternal and neonatal outcomes comparable to women unexposed or treated with anti TNF-α drugs. Placental pharmacokinetics differ between these two biologics, with an inverse infant-to-maternal ratio for vedolizumab, whereas ustekinumab shows a similar profile to anti TNF-α drugs. The clearance of vedolizumab in exposed offspring seems to be faster than anti TNF-α, estimated around 15 and 19 weeks of age, respectively. Currently, the decision to interrupt or maintain these treatments is up to physicians' judgement on a case-by-case basis. In animal studies, Janus kinase (JAK) inhibitors and ozanimod have shown embryotoxicity and teratogenicity. Moreover, tofacitinib and filgotinib seemingly affect female fertility. This review summarizes all existing data on the effects of administration of non-anti-TNF-α biologic agents and small molecules, during conception, pregnancy, and lactation.

An update on the safety of long-term vedolizumab use in inflammatory bowel disease

INTRODUCTION

Vedolizumab (Entyvio) is a humanized monoclonal antibody that disrupts the interaction between α4β7 integrin on circulating T-lymphocytes and MAdCAM-1 on the vascular endothelium to prevent their egress to sites of gut inflammation. It has proven therapeutic efficacy for the treatment of moderate-to-severe Crohn's disease, ulcerative colitis, and pouchitis.

AREAS COVERED

This narrative review assesses the safety profile of vedolizumab from the registration trial programs, open-label extension studies, observational real-world data, and pooled safety analyses. This includes an evaluation of the long-term overall safety in special populations typically underrepresented in clinical trials.

EXPERT OPINION

Vedolizumab is an effective therapy for inflammatory bowel disease with a well-established safety profile. No unexpected long-term safety signals have been identified. Safety data in pregnancy, in pediatric and elderly populations, in patients undergoing surgery, and in patients with a prior history of cancer are reassuring. Due to its safety merits, we propose that vedolizumab is an excellent candidate for advanced combination treatment with an anti-cytokine approach using another biologic or novel small molecule inhibitor. This is important in patients with medically refractory IBD, in patients at high risk of developing disease-related complications, or in patients with concomitant uncontrolled immune-mediated inflammatory diseases.