• 28 loci/proteins were found to be associated with VTE recurrence risk.

  • The genomic architecture of VTE recurrence risk varies based on the initial clinical presentation.

Abstract

Venous thromboembolism (VTE) is a frequent (annual incidence of 1-2 per 1000 individuals) and potentially life-threatening (case-fatality rate up to 10%) disease. VTE is associated with serious short-term and long-term complications, including a recurrence rate approaching 20% within 5 years. Anticoagulant therapy, the mainstay of VTE treatment, drastically reduces the risk of early VTE recurrence, but it exposes patients to a substantial risk of bleeding. We analyzed the genomic architecture of VTE recurrence using data from 6355 patients across 8 cohorts (including 1775 recurrences), enriched by subgroup analyses, according to sex and clinical manifestation of first VTE, which led to the identification of 28 molecular markers. Through genome-wide association studies, we identified 1 locus associated with VTE recurrence, GPR149/MME. Among all variants known to be associated with first VTE, KNG1, and FGG were associated with recurrence. Additionally, Mendelian randomization analyses identified 7 proteins as risk factors for recurrence: elevated plasma levels of coagulation factor XI, coagulation factor VIII, von Willebrand factor, histo-blood group ABO system transferase, and Golgi membrane protein 2; and decreased levels of proprotein convertase subtilisin/kexin 9 and pro–interleukin-16. Subgroup analyses revealed 18 molecular determinants associated with VTE recurrence, with notable differences between subgroups. For example, the exonic variant SLC4A1 p.Glu40Lys was significantly associated in patients who experienced pulmonary embolism but showed no effect in those with deep vein thrombosis. These findings emphasize the role of specific genetic loci and protein pathways in influencing VTE recurrence and provide valuable insights into potential therapeutic targets. Further research is needed to clarify the biological mechanisms driving these associations.

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