Low complement levels are related to poor obstetric outcomes in women with obstetric antiphospholipid syndrome. The EUROAPS Registry Study Group

Enrique Esteve-Valverde*, Jaume Alijotas-Reig, Cristina Belizna, Joana Marques-Soares, Ariadna Anunciacion-Llunell, Carlos Feijóo-Massó, Luis Sáez-Comet, Arsene Mekinian, Raquel Ferrer-Oliveras, Elmina Lefkou, Stephanie Morales-Pérez, Ariel Hoxha, Angela Tincani, Cecilia Nalli, Josep Pardos-Gea, Luca Marozio, Aldo Maina, Gerard Espinosa, Ricard Cervera, Sara De CarolisOmar Latino, Sebastian Udry, Elisa Llurba, Carmen Garrido-Gimenez, Laura Trespidi, Maria Gerosa, Cecilia B. Chighizola, Patrizia Rovere-Querini, Valentina Canti, Karoline Mayer-Pickel, Sara Tabacco, Anna Arnau, Francesc Miró-Mur

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)

Abstract

Introduction: Obstetric antiphospholipid syndrome (OAPS) is an autoimmune disease related to antiphospholipid antibodies (aPL) with primaryinflammatory injury followed by clot cascade activation and thrombus formation. Complement system activation and their participation in aPL-related thrombosis is unclosed. Methods: We haveanalysed adverse pregnancy outcomes (APO) related to low complement (LC) levels in a cohort of 1048 women fulfilling classification criteria for OAPS. Results: Overall, 223 (21.3%) women presented LC values, during pregnancy. The length of pregnancy was shorter in OAPS women with LC compared to those with normal complement (NC) (median: 33 weeks, interquartile range: [24–38] vs. 35 weeks [27–38]; p = 0.022). Life new-born incidence was higher in patients with NC levels than in those with LC levels (74.4% vs. 67.7%; p = 0.045). Foetal losses were more related to women with triple or double aPL positivity carrying LC than NC values (16.3% vs. 8.0% NC; p = 0.027). Finally, some placental vasculopathies were affected in OAPS patients with LC as late Foetal Growth Restriction (FGR >34 weeks) rise to 7.2% in women with LC vs. 3.2% with NC (p = 0.007). Discussion: Data from our registry indicate that incidence of APO was higher in OAPS women with LC levels and some could be reverted by the correct treatment.

Original languageEnglish
Pages (from-to)29-34
Number of pages6
JournalPlacenta
Volume136
DOIs
Publication statusPublished - May 2023

Keywords

  • Antibodies, Antiphospholipid
  • Antiphospholipid Syndrome/complications
  • Female
  • Humans
  • Male
  • Placenta
  • Pregnancy
  • Pregnancy Complications
  • Registries

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