Key result
Cosegregation of type 1 von Willebrand disease phenotype with a specific VWF allele was absent in 5 of 11 families, indicating that phenotypic criteria may not always align with genetic markers.
Why the study?
Does the type 1 von Willebrand disease phenotype cosegregate with specific VWF alleles in affected families?
Observational (n=11)
Does the type 1 von Willebrand disease phenotype cosegregate with specific VWF alleles in affected families?
The type 1 von Willebrand disease phenotype may not consistently cosegregate with genetic markers at the VWF gene locus, suggesting population prevalence based on phenotype might overestimate locus-specific disease.
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Type 1 VWD phenotypic diagnosis warrants cautious interpretation in families; leaves open accuracy of phenotype-based prevalence estimates.
Eikenboom et al. (1999) conducted an observational in Type 1 von Willebrand disease (n=11). Type 1 von Willebrand disease phenotype was evaluated on Cosegregation of the VWD type 1 phenotype and a specific VWF allele. Cosegregation of type 1 von Willebrand disease phenotype with a specific VWF allele was absent in 5 of 11 families, indicating that phenotypic criteria may not always align with genetic markers.
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