Application of MLPA assay to characterize unsolved α-globin gene rearrangements.
Blood Cells Mol Dis
; 46(2): 139-44, 2011 Feb 15.
Article
em En
| MEDLINE
| ID: mdl-21190870
α-thalassemia belongs to those inherited diseases in which large genomic deletions/duplications represent a significant proportion of causative mutations. Until recently, large α-globin gene cluster rearrangements have been mainly detected by gap-PCR and Southern blotting, methods that have significant drawbacks. We tested the recently developed multiplex ligation-dependent probe amplification (MLPA) assay for deletional screening of the α-globin gene cluster in a cohort of 25 individuals suspected of having α-globin alteration(s), in which no or doubtful mutations had been found using conventional methods. In 13 out of 18 α-thalassemia carriers and in all 5 patients with HbH we found the causative α-globin defects. In 2 thalassemia intermedia patients, carriers of heterozygous ß-globin mutations, the co-inheritance of homozygous α-genes triplication was detected. MLPA results were subsequently confirmed by real-time PCR. This study shows that MLPA can effectively identify different and unknown types of α-globin gene rearrangements, to allow characterizing previously unsolved α-thalassemia genotypes.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Bioensaio
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Talassemia alfa
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Dosagem de Genes
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Alfa-Globinas
Tipo de estudo:
Diagnostic_studies
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Prognostic_studies
Limite:
Adult
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Aged
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Child, preschool
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Female
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Humans
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Male
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article