Simultaneous genotyping of coagulation factor XI type II and type III mutations by multiplex real-time polymerase chain reaction to determine their prevalence in healthy and factor XI-deficient Italians | Haematologica

摘要

Background Factor XI deficiency is a rare autosomal recessive coagulopathy, which is, however, common among Ashkenazi Jews, in whom the so-called type II (E117X) and type III (F283L) mutations account for 98% of alleles. In non-Jewish populations, a higher level of allelic heterogeneity has been reported. However, the type II mutation was found in individuals from England, Portugal, and Italy, and haplotype analysis confirmed its Jewish origin. The aims of this study were to develop a rapid and accurate assay for the simultaneous detection of type II/type III mutations and to determine the frequency of these mutations in a large Italian population of healthy individuals and in a cohort of factor XI-deficient Italian patients.