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    Hum Genet. 1992 May;89(2):194-8.

    Polymerase chain reaction amplification of two polymorphic simple repeat sequences within the von Willebrand factor gene: application to family studies in von Willebrand disease.

    Source

    University Department of Haematology, Royal Infirmary, Manchester, UK.

    Abstract

    We have used the polymerase chain reaction to amplify two variable number of tandem repeats (VNTRs) within a region of repetitive DNA located in intron 40 of the von Willebrand factor (vWf) gene. Heterozygosity for VNTR I was observed in 30 out of 39 normal unrelated individuals tested (77%), and for VNTR II in 29 out of 44 (66%) similar individuals. Family studies were carried out on 11 kindreds with von Willebrand disease (vWD). Ten of these families were found to be informative for one or other of the VNTRs or for a combination of data from both VNTRs. This method can be used for antenatal diagnosis and for carrier diagnosis in recessive forms of vWD. It is also useful for tracking the gene associated with vWD in type I families where there may be one or more individuals with a phenotypically uncertain diagnosis.

    PMID:
    1587530
    [PubMed - indexed for MEDLINE]

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