Lupus Science and Medicine (May 2022)

Pregnancy outcomes in antiphospholipid antibody positive patients: prospective results from the AntiPhospholipid Syndrome Alliance for Clinical Trials and InternatiOnal Networking (APS ACTION) Clinical Database and Repository (‘Registry’)

  • ,
  • Vittorio Pengo,
  • Ricard Cervera,
  • Angela Tincani,
  • Michelle Petri,
  • Jane Salmon,
  • Guillermo Ruiz-Irastorza,
  • Savino Sciascia,
  • Massimo Radin,
  • Paul R Fortin,
  • Pierluigi Meroni,
  • Cecilia Nalli,
  • Maria G Tektonidou,
  • Laura Andreoli,
  • Yu Zuo,
  • Denis Wahl,
  • Medha Barbhaiya,
  • Olga Amengual,
  • Hannah Cohen,
  • Zhuoli Zhang,
  • Guillermo Pons-Estel,
  • Ignasi Rodríguez-Pintó,
  • Rosario Lopez-Pedrera,
  • Maria Gerosa,
  • Bahar Artim-Esen,
  • Maria Laura Bertolaccini,
  • Ann Clarke,
  • Roger Levy,
  • D Ware Branch,
  • LanLan Ji,
  • Giulia Pazzola,
  • Doruk Erkan,
  • Rohan Willis,
  • Jason Knight,
  • Ecem Sevim,
  • Robert Roubey,
  • Michael Belmont,
  • Ian Mackie,
  • Leslie Skeith,
  • Zeynep Belce Erton,
  • Guilherme Ramires de Jesús,
  • Amaia Ugarte,
  • Danieli Andrade,
  • Maria Angeles Aguirre- Zamorano,
  • Michael Lockshin,
  • Emilio Gonzalez,
  • Cecilia B Chighizola,
  • Gustavo Balbi,
  • Stephane Zuily,
  • Maria Efthymiou,
  • Esther Rodgriguez Almaraz,
  • Silvia Foddai,
  • Nina Kello,
  • Jose Pardos-Gea,
  • Flavio Signorelli,
  • Stacy Davis,
  • Zhouli Zhang

DOI
https://doi.org/10.1136/lupus-2021-000633
Journal volume & issue
Vol. 9, no. 1

Abstract

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Objectives To describe the outcomes of pregnancies in antiphospholipid antibody (aPL)-positive patients since the inception of the AntiPhospholipid Syndrome Alliance for Clinical Trials and InternatiOnal Networking Registry.Methods We identified persistently aPL-positive patients recorded as ‘pregnant’ during prospective follow-up, and defined ‘aPL-related outcome’ as a composite of: (1) Preterm live delivery (PTLD) at or before 37th week due to pre-eclampsia (PEC), eclampsia, small-for-gestational age (SGA) and/or placental insufficiency (PI); or (2) Otherwise unexplained fetal death after the 10th week of gestation. The primary objective was to describe the characteristics of patients with and without aPL-related composite outcomes based on their first observed pregnancies following registry recruitment.Results Of the 55 first pregnancies observed after registry recruitment among nulliparous and multiparous participants, 15 (27%) resulted in early pregnancy loss <10 weeks gestation. Of the remaining 40 pregnancies: (1) 26 (65%) resulted in term live delivery (TLD), 4 (10%) in PTLD between 34.0 weeks and 36.6 weeks, 5 (12.5%) in PTLD before 34th week, and 5 (12.5%) in fetal death (two associated with genetic anomalies); and (2) The aPL-related composite outcome occurred in 9 (23%). One of 26 (4%) pregnancies with TLD, 3/4 (75%) with PTLD between 34.0 weeks and 36.6 weeks, and 3/5 (60%) with PTLD before 34th week were complicated with PEC, SGA and/or PI. Fifty of 55 (91%) pregnancies were in lupus anticoagulant positive subjects, as well as all pregnancies with aPL-related composite outcome.Conclusion In our multicentre, international, aPL-positive cohort, of 55 first pregnancies observed prospectively, 15 (27%) were complicated by early pregnancy loss. Of the remaining 40 pregnancies, composite pregnancy morbidity was observed in 9 (23%) pregnancies.