Molecular diagnosis for a novel deletion mutation of α thalassemia / 中华血液学杂志
Chinese Journal of Hematology
; (12): 724-727, 2014.
Article
en Zh
| WPRIM
| ID: wpr-242076
Biblioteca responsable:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To raise awareness of the pathogenesis and diagnosis of thalassemia by reporting one case of α thalassemia patient with a large deletion fragment and analyzing the pedigree.</p><p><b>METHODS</b>Firstly, blood cells and hemoglobin electrophoresis analysis were used for screening of thalassemia, and then three common kinds of deletional α thalassemia in Chinese was detected by Gap-PCR, three common kinds of non- deletional α thalassemia and seventeen common mutations of β thalassemia in Chinese were analyzed by using PCR- RDB. The unknown mutation of samples was identified with Multiplex Ligation-dependent Probe Amplification (MLPA) and DNA sequencing.</p><p><b>RESULTS</b>The proband female presented with microcytic hypochromic anemia(hemoglobin 71 g/L, mean corpuscular volume 52.4 fl, mean corpuscular hemoglobin 16.1 pg), and hemoglobin A2 1.4%. The identified large deletion fragment length was 21 925 bp, so far which had not been reported in the world and was named -α²¹·⁹. It was registered in USA DNA database and GenBank accession number as KF360979. The genotype of her mother and father and brother were αα/-α²¹·⁹, --(SEA)/-α³·⁷, αα/-α³·⁷ respectively, and the genotype of her and her sister were the same of --(SEA)/-α²¹·⁹. Her husband gene of thalassemia had no mutation, so prenatal diagnosis of thalassemia was not carried out in the pregnant woman.</p><p><b>CONCLUSION</b>The discovery of -α(21.9) deletion mutation was enriched the DNA mutation gene database of thalassemia, and had important significance for genetic counseling and thalassemia prenatal diagnosis.</p>
Texto completo:
1
Base de datos:
WPRIM
Asunto principal:
Linaje
/
Eliminación de Secuencia
/
Talasemia alfa
/
Genética
Tipo de estudio:
Prognostic_studies
Límite:
Female
/
Humans
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Male
Idioma:
Zh
Revista:
Chinese Journal of Hematology
Año:
2014
Tipo del documento:
Article