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Anti-Ro neonatal lupus risk — SCE Rheumatology MCQ

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HardPregnancy and Rare Rheumatic DiseaseAnti-Ro neonatal lupus riskSCE Rheumatology

A pregnant patient needs continued TNF inhibition for severe inflammatory arthritis and wishes to minimise fetal drug exposure. Which agent has the least placental transfer?

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Correct answer: CCertolizumab pegol, whose absent Fc region limits active placental transfer

Certolizumab lacks an Fc region and therefore has minimal active placental transfer. It is compatible throughout pregnancy when needed; other TNF inhibitors may also be used with gestation-specific planning and infant live-vaccine advice.

Reference: BSR guideline on immunomodulatory antirheumatic drugs in pregnancy and breastfeeding (Published November 2022): https://academic.oup.com/rheumatology/article/62/4/e48/6783012; BNF: certolizumab pegol (Current BNF monograph, accessed 30 July 2026): https://bnf.nice.org.uk/drugs/certolizumab-pegol/