Long term follow-up of pediatric-onset Evans syndrome: broad immunopathological manifestations and high treatment burden.

Abstract

Pediatric-onset Evans syndrome (pES) is defined by both immune thrombocytopenic purpura (ITP) and autoimmune hemolytic anemia (AIHA) before the age of 18 years. There have been no comprehensive long-term studies of this rare disease, which can be associated to various immunopathological manifestations (IM). We report outcomes of the 151 patients with pES and more than 5 years of follow-up from the nationwide French prospective OBS'CEREVANCE cohort. Median age at final follow-up was 18.5 years (range, 6.8-50.0 years) and the median follow-up period was 11.3 years (range, 5.1-38.0 years). At 10 years, ITP and AIHA were in sustained complete remission in 54.5% and 78.4% of patients, respectively. The frequency and number of clinical and biological IM increased with age: at the age of 20 years, 74% had at least one clinical IM (cIM). A wide range of cIM occurred, mainly lymphoproliferation, dermatological, gastrointestinal/hepatic and pneumological IM. The number of cIM was associated with a subsequent increase in the number of second-line treatments received (other than steroids and immunoglobulins; hazard ratio 1.4, 95% Confidence Interval: 1.15-1.60, P=0.0002, Cox proportional hazards method). Survival at 15 years after diagnosis was 84%. Death occurred at a median age of 18 years (range, 1.7-31.5 years), and the most frequent cause was infection. The number of second-line treatments and severe/recurrent infections were independently associated with mortality. In conclusion, long-term outcomes of pES showed remission of cytopenias but frequent IM linked to high second-line treatment burden. Mortality was associated to drugs and/or underlying immunodeficiencies, and adolescents-young adults are a high-risk subgroup.

• Authors: Thomas Pincez, Helder Fernandes, Thierry Leblanc, Gérard Michel, Vincent Barlogis, Yves Bertrand, Bénédicte Neven, Wadih Abou Chahla, Marlène Pasquet, Corinne Guitton, Aude Marie-Cardine, Isabelle Pellier, Corinne Armari-Alla, Joy Benadiba, Pascale Blouin, Eric Jeziorski, Frédéric Millot, Catherine Paillard, Caroline Thomas, Nathalie Cheikh, Sophie Bayart, Fanny Fouyssac, Christophe Piguet, Marianna Deparis, Claire Briandet, Eric Dore, Capucine Picard, Frédéric Rieux-Laucat, Judith Landman-Parker, Guy Leverger, Nathalie Aladjidi
• Journal: Haematologica (Haematologica) Vol. 107 Issue 2 Pg. 457-466 (02 01 2022) ISSN: 1592-8721 [Electronic] Italy
• PMID: 33440924 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Topics

• Adolescent
• Adult
• Anemia, Hemolytic, Autoimmune (diagnosis, therapy)
• Child
• Child, Preschool
• Follow-Up Studies
• Humans
• Infant
• Prospective Studies
• Retrospective Studies
• Thrombocytopenia
• Young Adult