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A C677T Methylenetetrahydrofolate Reductase (MTHFR) Polymorphism and G20210A Mutation in the Prothrombin Gene of Sickle Cell Anemia Patients from Northeast Brazil

2004; Taylor & Francis; Volume: 28; Issue: 3 Linguagem: Inglês

10.1081/hem-120040308

1532-432X

Fábio David Couto, Wendell Vilas Boas, Isa Menezes Lyra, Ângela Zanette, Marie France Dupuit, Mari Ney Tavares Almeida, Mitermayer Galvão dos Reis, Marilda de Souza Gonçalves,

Iron Metabolism and Disorders

The C677T methylenetetrahydrofolate reductase (MTHFR) gene polymorphism and the G20210A mutation at the 3' untranslated region (3'UTR) of the prothrombin gene may be considered to be genetic risk factors that contribute to the clinical heterogeneity in sickle cell disease. The current study investigated a group of sickle cell (SS) patients from Salvador-Bahia, Northeast Brazil in order to determine the prevalence of these polymorphisms, using the polymerase chain reaction (PCR) and restriction fragment length polymorphim (RFLP) techniques. Out of 69 SS patients diagnosed with the C677T MTHFR gene polymorphism, 13 (18.6%) were heterozygous and four (5.7%) homozygous. The G20210A mutation was not found in 50 SS patients investigated. These results became important once the C677T MTHFR gene polymorphism was found to be an independent risk factor for vascular disease, a common clinical event in sickle cell disease.