TY - JOUR T1 - Systemic lupus erythematosus and neutropaenia: a hallmark of haematological manifestations JF - Lupus Science & Medicine JO - Lupus Sci Med DO - 10.1136/lupus-2020-000399 VL - 7 IS - 1 SP - e000399 AU - Aurore Meyer AU - Aurélien Guffroy AU - Gilles Blaison AU - Yannick Dieudonne AU - Zahir Amoura AU - Bernard Bonnotte AU - Christoph Fiehn AU - Pierre Kieffer AU - Hannes Martin Lorenz AU - Nadine Magy-Bertrand AU - François Maurier AU - Jean-Louis Pennaforte AU - Hans-Hartmut Peter AU - Andreas Schwarting AU - Jean Sibilia AU - Laurent Arnaud AU - Thierry Martin AU - Reinhard Edmund Voll AU - Anne-Sophie Korganow A2 - , Y1 - 2020/07/01 UR - http://lupus.bmj.com/content/7/1/e000399.abstract N2 - Objective Systemic lupus is a chronic autoimmune disease characterised by its phenotypic heterogeneity. Neutropaenia is a frequent event in SLE occurring in 20%–40% of patients depending on the threshold value of neutrophil count. On a daily basis, the management of neutropaenia in SLE is difficult with several possible causes. Moreover, the infectious consequences of neutropaenia in SLE remain not well defined.Methods 998 patients from the Lupus BioBank of the upper Rhein (LBBR), a large German and French cohort of patients with SLE, mostly of Caucasian origin (83%), were included in this study. Neutropaenia was considered when neutrophil count was below 1800×106/L. An additional analysis of detailed medical records was done for 65 LBBR patients with neutropaenia.Results 208 patients with neutropaenia (21%) were compared with 779 SLE patients without neutropaenia. Neutropaenia in SLE was significantly associated with thrombocytopaenia (OR 4.11 (2.57–10.3)), lymphopaenia (OR 4.41 (2.51–11.5)) and low C3 (OR 1.91 (1.03–4.37)) in multivariate analysis. 65 representative patients with neutropaenia were analysed. Neutropaenia was moderate to severe in 38%, chronic in 31%, and both severe and chronic in 23% of cases. Moderate to severe and chronic neutropaenia were both associated with lymphopaenia and thrombopaenia. Chronic neutropaenia was also associated anti-Ro/SSA antibodies and moderate to severe neutropaenia with oral ulcers.Conclusion This study is to date the largest cohort to describe neutropaenia in SLE. Neutropaenia displays a strong association with other cytopaenias, suggesting a common mechanism. Chronic neutropaenia is associated with anti-Ro/SSA antibodies with or without identified Sjögren’s disease. ER -