The Annual European Congress of Rheumatology is one of the largest rheumatology congresses in the world, and the 18th Annual Congress coincided with the 70th anniversary of EULAR (the European League Against Rheumatism), attracting over 14,000 delegates from more than 120 countries. There were 180 sessions and poster tours across the spectrum of rheumatic and musculoskeletal diseases. There was a significant focus on biologics for pediatric rheumatology conditions, and this is reflected in this Meeting Report, which provides a brief summary of some of the new research and drug developments for pediatric rheumatology that were presented at the meeting.1 CRIB and CRADLE: minimal transfer of certolizumab pegol during pregnancy and lactationGood management of active chronic inflammatory conditions before/during pregnancy and lactation is crucial to ensure the best fetal and maternal outcomes. A EULAR task force has published points to consider for the use of antirheumatic drugs in these situations [1]. Among the recommendations for the use of biologics, etanercept and certolizumab pegol may be considered for use throughout pregnancy, whereas the use of other anti-TNFa agents is limited to the first trimester; there is a paucity of data on safe use of biologics with other methods of action during pregnancy.Biologics are usually derived from IgG, which permits the active transport of those molecules with an IgG1 Fc portion across the placenta, mediated by the fetal Fc receptor. Transfer is low during the first trimester but increases thereafter. Certolizumab pegol lacks the Fc portion and has no active placental transfer. The results of the CRIB study (NCT02019602), presented by Prof. Xavier Mariette (University Hospitals of Paris-Sud, France), confirmed this in 16 pregnant women with chronic inflammatory diseases [11 with rheumatoid arthritis (RA), three with Crohn's disease (CD) and one each with psoriatic arthritis (PsA) or axial spondyloarthritis (AS)] using a highly-sensitive certolizumab-specific electrochemiluminescence immunoassay with tenfold greater sensitivity than the assay used in prior studies [2]. In the CRIB pharmacokinetic (PK) study, the women (C30 weeks' gestation) were receiving a maintenance dose of certolizumab pegol, with the last dose given within 35 days of delivery. Drug concentrations were determined in blood samples collected from the mothers, umbilical cords, and infants at delivery and from infants at 4 and 8 weeks post-delivery. Median gestational age at birth was 39.9 weeks (range 37.7-41.7) and median weight was 3.3 kg (range 2.6-4.0). Maternal certolizumab pegol levels at delivery were within the expected therapeutic range. Data were available for 14 infants at delivery; 13 had no quantifiable drug (\0.032 lg/ ml, the lower limit of quantitation) whereas one had 0.042 lg/ml (infant:mother plasma ratio 0.09%). Certolizumab pegol was not detected in any infant at weeks 4 or 8. Of the evaluable placentas, three had quantifiable drug levels (max. 0.048 lg/ml). Infants of treated mothers h...