2020
DOI: 10.1111/apt.16102
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Infliximab, adalimumab and vedolizumab concentrations across pregnancy and vedolizumab concentrations in infants following intrauterine exposure

Abstract: Background: The impact of pregnancy on levels of biologic agents in patients with IBD is undefined and time to elimination in vedolizumab-exposed infants is unknown. Aims: To determine the effect of pregnancy on infliximab, adalimumab and vedolizumab levels and to study infant vedolizumab clearance Methods: In a prospective observational study, maternal drug levels were measured pre-conception, in each trimester, at delivery and postpartum. The association between drug levels and gestation in weeks was assesse… Show more

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Cited by 44 publications
(119 citation statements)
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“…Data from the same region, with overlapping time periods and common co-authors, were concerning for possible duplication, and as such the smaller studies were also excluded. 23,28,37 Our systematic review therefore included four studies (213 pregnancies): three were full manuscripts, 21,22,30 while one was a conference abstract. 26 Study characteristics.…”
Section: Resultsmentioning
confidence: 99%
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“…Data from the same region, with overlapping time periods and common co-authors, were concerning for possible duplication, and as such the smaller studies were also excluded. 23,28,37 Our systematic review therefore included four studies (213 pregnancies): three were full manuscripts, 21,22,30 while one was a conference abstract. 26 Study characteristics.…”
Section: Resultsmentioning
confidence: 99%
“…Of the four trials in our systematic review, one was a prospective cohort study, 26 one was a retrospective case-control study, 21 and two were retrospective cohort studies. 22,30 The control group included patients exposed to "disease-matched" controls, 26 or those exposed to at least one of anti-TNF, steroids, immunomodulators, 5ASA or ustekinumab. 21,22,30 Exposure to VDZ varied across studies; within 2 months of conception, 30 at least once during pregnancy, 21 at least once during the first trimester, 26 and throughout pregnancy, 22 were included respectively.…”
Section: Resultsmentioning
confidence: 99%
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“…The fact that the mother was treated with vedolizumab, a humanized monoclonal antibody to α4β7 integrin detected on a specific subpopulation of memory T-lymphocytes for down-regulation of inflammatory processes in the gastrointestinal tract did not explain the symptoms of our patient according to the information given in the literature ( 37 39 ). In addition, studies show that vedolizumab levels assessed in cord blood are lower than maternal levels and clear rapidly, with blood levels below the detection limit at 6 weeks after birth ( 40 ).…”
Section: Discussionmentioning
confidence: 99%
“…41,42 Vedolizumab appears to be cleared from the blood within 3 months, based on very small case reports. 16,43,44 Very little has been reported on drug transfer and clearance of newer biologics and further studies are needed in this area. The differential drug transfer has led the American College of Rheumatology to strongly recommend continuation of certolizumab therapy during pregnancy, but to recommend continuation of the other anti-TNF agents only conditionally.…”
Section: What Evidence and Guidance Exists To Support Prescriptions Omentioning
confidence: 99%