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To investigate fetal/perinatal and maternal outcomes from a large multicentre cohort of women diagnosed with UCTD. This multicentre retrospective cohort study describes the outcomes of 224 pregnancies in 133 consecutive women with a diagnosis of UCTD, positive for ANA and aged <45 years old at study inclusion. Of the 224 pregnancies analysed, 177 (79%) resulted in live births, 45 (20.1%) in miscarriages (defined as pregnancy loss before 12 weeks' gestation), 2 (0.9%) in stillbirths (pregnancy loss after 20 weeks' gestation) and 6 (2.7%) cases showed intrauterine growth restriction. Miscarriages and stillbirths were strongly associated with the presence of aPL and ENA antibodies (P < 0.05). Maternal pregnancy complications were as follows: 5 (2.2%) cases developed pre-eclampsia, 11 (4.9%) cases gestational hypertension and 12 (5.4%) cases gestational diabetes. Joint involvement represented the most frequent clinical manifestation of the cohort (57.9%), followed by RP (40.6%), photosensitivity (32.3%) and haematological manifestations (27.1%). The rate of disease evolution of our cohort from a diagnosis of UCTD to a diagnosis of definite CTD was 12% within a mean time of 5.3 ± 2.8 years. With a total follow-up after first pregnancy of 1417 patient-years, we observed the evolution to a defined CTD in one out of every 88 patient- years. In our multicentre cohort, women with UCTD had a live birth rate of 79%. Women with UCTD should be referred to specialist follow-up when planning a pregnancy. ENA profiling and aPL testing should be mandatory in this setting, and further therapeutic approaches and management should be planned accordingly. © The Author(s) 2020. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For permissions, please email:


Massimo Radin, Karen Schreiber, Irene Cecchi, Alessandra Bortoluzzi, Francesca Crisafulli, Cristiano M de Freitas, Beatrice Bacco, Elena Rubini, Silvia G Foddai, Melissa Padovan, Silvia Gallo Cassarino, Franco Franceschini, Danieli Andrade, Chiara Benedetto, Marcello Govoni, Tiziana Bertero, Luca Marozio, Dario Roccatello, Laura Andreoli, Savino Sciascia. A multicentre study of 244 pregnancies in undifferentiated connective tissue disease: maternal/fetal outcomes and disease evolution. Rheumatology (Oxford, England). 2020 Sep 01;59(9):2412-2418

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PMID: 31943123

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