Identification of 8 Rare Deleterious Variants in ADAMTS13 by Next-generation Sequencing in a Chinese Population with Thrombotic Thrombocytopenic Purpura  

作　　者：Xiao WANG Xing-jie HAO Cheng-guqiu DAI Ya-jie DING Lv XIONG Jun DENG Jing-Jing JIANG 

机构地区：[1]Department of Obstetrics and Gynecology,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,China [2]Department of Epidemiology and Biostatistics,Key Laboratory for Environment and Health,School of Public Health,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,China [3]Institute of Hematology,Union Hospital,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430022,China

出　　处：《Current Medical Science》2023年第5期1043-1050,共8页当代医学科学（英文）

基　　金：supported by the National Natural Science Foundation of China(No.82003561).

摘　　要：Objective Thrombotic thrombocytopenic purpura(TTP)is a rare and fatal disease caused by a severe deficiency in the metalloprotease ADAMTS13 and is characterized by thrombotic microangiopathy.The present study aimed to investigate the genes and variants associated with TTP in a Chinese population.Methods Target sequencing was performed on 220 genes related to complements,coagulation factors,platelets,fibrinolytic,endothelial,inflammatory,and anticoagulation systems in 207 TTP patients and 574 controls.Subsequently,logistic regression analysis was carried out to identify the TTP-associated genes based on the counts of rare deleterious variants in the region of a certain gene.Moreover,the associations between common variants and TTP were also investigated.Results ADAMTS13 was the only TTP-associated gene(OR=3.77;95%CI:1.82–7.81;P=3.6×10^(-4))containing rare deleterious variants in TTP patients.Among these 8 variants,5 novel rare variants that might contribute to TTP were identified,including rs200594025,rs782492477,c.T1928G(p.I643S),c.3336_3361del(p.Q1114Afs*20),and c.3469_3470del(p.A1158Sfs*17).No common variants associated with TTP were identified under the stringent criteria of correction for multiple testing.Conclusion ADAMTS13 is the primary gene related to TTP.The genetic variants associated with the occurrence of TTP were slightly different between the Chinese and European populations.

关 键 词：thrombotic thrombocytopenia purpura ADAMTS13 target sequencing 

分 类 号：R554.6[医药卫生—血液循环系统疾病]