Venous Thromboembolism (VTE) Clinical Trial
Official title:
Identification of New Genetic Markers for the Risk of Recurrence of Venous Thromboembolism by Whole Genome Analysis: Case-control Study Nested in the MARTHA Cohort
Venous thromboembolism (VTE) is a common and potentially fatal pathology in France. The risk of recurrence is around 5 to 7% per year. The identification of patients at risk of VTE and its prevention is a real health issue in particular. 50% of MTEV recurrences occur in the absence of a risk situation, suggesting the involvement of specific risk factors for MTEV recurrence that have not been identified to date. In the last ten years, so-called "genome-whole" or "genome wide" association (GWAS) approaches have identified new genetic risk factors for the first episode of VTE. On the other hand, no study has focused on the predictive factors of recurrence. The previous project, conducted from 2012 (NCT02904967), had as its main objective to identify new genes for susceptibility to MTEV recurrence by comparing cases of MTEV recurrence versus controls having had a single episode of MTEV. The MARTHA cohort (1,542 patients) is extremely valuable study material and is one of the few cohorts in the world with genome-wide data in the field of VTE. Follow-up could only be performed in 359 patients, 76 (21%) of whom presented with a new episode of VTE. The objective of this project is to increase the number of patients for whom the investigators will have information on recurrence / non-recurrence of VTE, by querying national registries on the vital status of patients, and possible causes of death. . These new data on the occurrence or not of a new thrombotic episode, will be confronted with the genetic data already available in all the patients in order to identify specific genetic risk factors and potentially predictive of the recurrence of MTEV.
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