Variant screening of the RHD gene in a large cohort of subjects with D phenotype ambiguity: report of 17 novel rare alleles.
Transfusion
; 52(4): 759-64, 2012 Apr.
Article
em En
| MEDLINE
| ID: mdl-21950494
ABSTRACT
BACKGROUND:
A considerable number of RHD alleles responsible for weak and partial D phenotypes have been identified over the past decade. Two particular concerns, namely, 1) that red blood cells of these phenotypes may cause anti-D immunization when transfused to D- recipients and 2) that serologic determination of these phenotypes is often doubtful, make genetic analysis of the RHD gene highly desirable. STUDY DESIGN ANDMETHODS:
Blood samples that displayed D phenotype ambiguity (as determined by serologic analyses) were collected from several sites of the Etablissement Français du Sang and subjected to RHD variant screening by means of a previously established denaturing high-performance liquid chromatography method followed by direct sequencing.RESULTS:
Systematic screening of the RHD coding sequences as well as the exon-intron boundaries identified DNA variants in 755 of the 806 samples analyzed. In particular, this resulted in the identification of 10 novel single-nucleotide substitutions and seven novel complex alleles.CONCLUSION:
This study further increased the already large repertoire of RHD allelic variants. Whereas most of the newly found variants are putative weak or partial D alleles, most of the complex alleles are readily understandable in the present phylogenetic model of RHD.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sistema do Grupo Sanguíneo Rh-Hr
/
Alelos
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article