Molecular basis and thrombotic manifestations of antithrombin deficiency in 15 unrelated Chinese patients

被引:29
作者
Ding, Qiulan [1 ]
Wang, Min [1 ]
Xu, Guanqun [1 ]
Ye, Xu [2 ]
Xi, Xiaodong [3 ]
Yu, Tingting [4 ]
Wang, Xuefeng [1 ]
Wang, Hongli [3 ]
机构
[1] Shanghai Jiao Tong Univ, Dept Lab Med, Ruijin Hosp, Sch Med, Shanghai 200025, Peoples R China
[2] Guangzhou Med Univ, Dept Hematol, Affiliated Hosp 2, Guangzhou, Guangdong, Peoples R China
[3] Shanghai Jiao Tong Univ, State Key Lab Med Genom, Shanghai Inst Hematol, Ruijin Hosp,Sch Med, Shanghai 200025, Peoples R China
[4] Shanghai Jiao Tong Univ, Inst Pediat Translat Med, Shanghai Childrens Med Ctr, Sch Med, Shanghai 200025, Peoples R China
基金
中国国家自然科学基金;
关键词
Antithrombin; Gene mutation; Thromboembolism; MESENTERIC VENOUS THROMBOSIS; INCREASED HEPARIN AFFINITY; FACTOR-V-LEIDEN; PROTEIN-S; MUTATIONS; PREVALENCE; RISK; GENE; IDENTIFICATION; COEXISTENCE;
D O I
10.1016/j.thromres.2013.07.013
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Introduction: Antithrombin (AT) deficiency is associated with an increasing risk of thrombosis. Materials and methods: 15 unrelated patients with AT deficiency defined by thrombophilic assays were recruited and detailed clinical information about patients, focusing on the personal and family history of thromboembolism (TE), were recorded. Mutation analysis was performed by direct sequencing of an AT gene (SERPINC1) in the patients and their family members. Results: A total of 15 heterozygous causative mutations, each being identified in one family, were identified. Five mutations (33.3%) were reported here for the first time, including three null mutations (Ser36X, Lys70X and Try307X) and two missense mutations (Phe123Cys and Leu340Phe) probably impairing the structural integrity and stability of protein based on the AT structural analysis. Of the 15 patients, 33.3% (5/15) had additional risk factors and only one patient presented with additional genetic alteration causing an early onset of thrombosis. Fourteen patients (93.9%) suffered from multisite recurrent thrombotic episodes after a first episode of thrombosis. 93.3% of the patients experienced deep vein thrombosis (DVT) and 40.0% presented with mesenteric venous thrombosis (MVT). In addition, both venous and arterial thrombosis was present in two unrelated patients. 51.0% subjects with AT deficiency in the 15 unrelated pedigrees experienced TE events. Conclusions: Prophylactic anticoagulation may be suggested in AT-deficient patients to avoid the recurrent and multisite thrombosis. The association of primary MVT and AT deficiency is highlighted. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:367 / 373
页数:7
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