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Renal damage and old age: risk factors for thrombosis in patients with ANCA-associated vasculitis
Thrombosis Journal ( IF 3.1 ) Pub Date : 2024-03-20 , DOI: 10.1186/s12959-024-00593-9 Xin Chen , Shuo Zhang , Ruilian You , Yixin Ma , Peng Xia , Xiaoxiao Shi , Haiting Wu , Ke Zheng , Yan Qin , Xinping Tian , Limeng Chen
Thrombosis Journal ( IF 3.1 ) Pub Date : 2024-03-20 , DOI: 10.1186/s12959-024-00593-9 Xin Chen , Shuo Zhang , Ruilian You , Yixin Ma , Peng Xia , Xiaoxiao Shi , Haiting Wu , Ke Zheng , Yan Qin , Xinping Tian , Limeng Chen
Thrombosis in ANCA-associated vasculitis (AAV) was prevalent and has been neglected in Chinese patients. This study tried to describe the clinical characteristics, identify the risk factors, and investigate the causal relationship between AAV and venous thromboembolism (VTE) by two-sample Mendelian randomization (MR) analysis. In this retrospective, observational study, we included all hospitalized AAV patients from Jan 2013 to Apr 2022 in Peking Union Medical College Hospital. We collected their clinical data for multivariate regression analysis to determine the risk factors for thrombosis. The nomogram was constructed by applying these risk factors to predict thrombosis in AAV patients. As for MR analysis, we selected single nucleotide polymorphisms (SNPs) related to AAV from published genome-wide association studies and extracted the outcome data containing deep vein thrombosis (DVT) and pulmonary embolism (PE) from the UK biobank. 1203 primary AAV patients were enrolled, and thrombosis occurred in 11.3%. Multivariate regression suggested that older than 65 years, EGPA, neurological involvement, lung involvement, significantly elevated serum creatinine (> 500µmol/L), and elevated D-dimer were associated with thrombosis in AAV patients. The model demonstrated satisfied discrimination with an AUC of 0.769 (95% CI, 0.726–0.812). MR analysis showed that EGPA could increase the risk of developing DVT and PE (OR = 1.0038, 95%CI = 1.0035–1.0041, P = 0.009). Thrombosis was not rare in Chinese patients with AAV. Renal damage and old age emerged as critical risk factors for thrombosis. EGPA might have a potential causal relationship with DVT and PE.
更新日期：2024-03-20
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