Allelic and genotypic frequencies of platelet glycoprotein polymorphisms in a Portuguese population |
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Authors: | Luís Bernardo Pina-Cabral Virgínia Carvalhais Bárbara Mesquita Claudia Escórcio Paula Salgado Amândia Santos Ema Ruivães Maria Céu Monteiro Isabel Arrieta Enrique O’Connor António Almeida-Dias Begoña Criado |
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Institution: | 1. Centro de Investigação em Tecnologias da Saúde, Cooperativa de Ensino Superior, Politécnico e Universitário, Gandra, Portugal;2. Facultad de Ciencias y Tecnologia, Universidad del País Vasco, Bilbao, Spain;3. Centro de Investigacion Principe Felipe, Laboratory of Cytomics, Valencia, Spain |
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Abstract: | Introduction and objectivesWe studied genotypic and allelic frequencies of polymorphisms that can affect platelet function, namely the Kozak, VNTR and HPA-2 polymorphisms of glycoprotein Ibα, the PlA polymorphism of glycoprotein IIIa and the C807T polymorphism of glycoprotein Ia, in a Portuguese population composed of 227 donors.MethodsPCR-RFLP was used to assess the Kozak, HPA-2, PlA and C807T polymorphisms. The VNTR polymorphism was discriminated by different weight bands on electrophoresis.ResultsAll genotypic frequencies were in Hardy-Weinberg equilibrium and do not differ from other Caucasian populations. Genotypic frequencies were 68.3%, 26.9% and 4.8% for PlA1/A1, PlA1/A2 and PlA2/A2 genotypes of the PlA polymorphism, 79.3%, 20.3% and 0.4% for TT, TC and CC genotypes of the Kozak polymorphism, 81.1%, 18.9% and 0.0% for aa, ab and bb genotypes of the HPA-2 polymorphism, 15.4%, 0.9%, 70.5%, 11.5%, 1.3% and 0.4% for BC, BD, CC, CD, DD and CE genotypes of the VNTR polymorphism, and 39.7%, 50.2% and 10.1% for CC, CT and TT genotypes of the C807T polymorphism.ConclusionsThe Portuguese population has now been characterized in terms of major platelet glycoprotein polymorphisms, which will be an important tool for further studies to assess the role of platelet glycoproteins in individual predisposition to prothrombotic conditions and response to antithrombotic therapy. |
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