Neither of the allele frequencies of genetic determinants for thrombophilia (coagulation factor V 1691G-->A (factor V Leiden) and factor II 20210G-->A polymorphisms) in the background population differed significantly from that in IBD patients.
Prevalence of factor V G1691A (Leiden), prothrombin G20210A, and methylene tetrahydrofolate reductase C677T thrombophilic mutations in children with inflammatory bowel disease.