[Screening for inherited thrombophilia and genome sequencing]

To screening coagulation and anticoagulation genes and mutations in Chinese patients with venous thromboembolism suspected of inhered thrombophilia.

Patients with venous thromboembolism caused by inherited thrombophilia were collected from the second Affiliated Hospital, Zhejiang University School of Medicine during June 2015 and December 2017. Gene sequencing was conducted to screen the anticoagulant-related genes PROC, PROS1, SERPINC1 and coagulation-related genes F5, F2, F8, CBS, MTHFR. The thousands of human genome database, ESP6500 database, Genoma database, HGMD mutation database were used to compare the mutation sites, and the pathogenic mutation sites were predicted according to SIFT, Polyphen, MutationTaster and CADD databases.

Among 25 patients screened, eight patients with PROC mutations, two patients with PROS1 mutations, three patients with SERPINC1 mutations; one patient with F5 mutation, one patient with F2 mutation, one patient with F8 mutation, two patient with CBS mutations, and one patient with MTHFR mutation.

The second generation gene sequencing helps to diagnose inherited thrombophilia and guide the decision of anticoagulation duration.