Haematologica (Feb 2007)

The relationship between ABO groups and subgroups, factor VIII and von Willebrand factor

  • Norma Cristina Sousa,
  • Joyce Maria Anicchino-Bizzacchi,
  • Maria Fátima Locatelli,
  • Vagner Castro,
  • Maria Lourdes Barjas-Castro

DOI
https://doi.org/10.3324/haematol.10457
Journal volume & issue
Vol. 92, no. 2

Abstract

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The aim of this study was to correlate ABO groups with plasma levels of factor VIII (FVIII), von Willebrand factor (VWF:Ag), and ristocetin cofactor (VWF:RCo). Serological and molecular tests defined blood groups from 114 donors (10 AA, 10 BB, 10 AB, 10 AO1, 10 BO1,16 O1O1, 20 A2O1, 20 A2B, 4 A3O1, 3 AxO1, and 1 BelO1). The levels of VWF:Ag, FVIII and VWF:RCo observed in rare subgroups (A3O1, AxO1, BelO1) were similar to the values found in the O1O1 group. However, levels of these factors were significantly higher in A2O1 donors than in O1O1 donors (VWF:Ag p=0.01; FVIII p=0.04; VWF:RCo p