Summary
Screening for the PlA polymorphism has been made faster and simpler with the advent of heteroduplex technology.
Simultaneous screening for three common prothrombotic polymorphisms PlA, factor V Leiden, and MTHFR(C677T) has been achieved with multiplex heteroduplex
analysis. We describe a quick and simple method for PlA heteroduplex probe production. The probe was multiplexed with heteroduplex probes
for MTHFR(C677T) and factor V Leiden polymorphisms in a one tube assay, allowing rapid
automated genotyping of all three. This automated multiplex assay was applied to a
cohort of 165 patients and showed excellent correlation with gel-based assays, both
PAGE and RFLP. This approach will facilitate the analysis of multiple polymorphisms
in complex disease in large populations.
Keywords
PlA - factor V Leiden - thermolabile MTHFR polymorphisms - automated heteroduplex
assay