First report of the spectrum of δ-globin gene mutations in Omani subjects - identification of novel mutations

2014 ◽  
Vol 37 (2) ◽  
pp. 238-243 ◽  
Author(s):  
S. Alkindi ◽  
S. AlZadjali ◽  
S. Daar ◽  
R. Ambusaidi ◽  
D. Gravell ◽  
...  
Keyword(s):  
Globin Gene ◽  
Gene Mutations ◽  
Novel Mutations ◽  
First Report

scholarly journals β-Thalassaemia Major in a Spanish Patient due to a Compound Heterozygosity for CD39C→T/−28A→C

2009 ◽  
Vol 2009 ◽  
pp. 1-3 ◽  
Author(s):  
Soledad Gamarra ◽  
Guillermo Garcia-Effron ◽  
Carmen Monteserin ◽  
Isabel Lopez-Villar ◽  
Florinda Gilsanz ◽  
...  
Keyword(s):  
Male Patient ◽  
Globin Gene ◽  
Gene Mutations ◽  
Gene Promoter ◽  
Tata Box ◽  
Spanish Population ◽  
Compound Heterozygosity ◽  
Thalassaemia Major ◽  
Spanish Patient ◽  
First Report

A Spanish male patient withβ-thalassaemia major was studied. Compound heterozygosity was found for one of the most commonβ-globin gene mutations in the Spanish population (codon 39C→T) and for a mutation in the TATA box element of theβ-globin gene promoter (−28 A→Cmutation). To our knowledge this is the first report of a CD39C→Tand−28 A→Cchange association and the first report of the−28 A→Csubstitution in a Spanish patient.

scholarly journals Prevalence and clinical phenotype of the triplicated α-globin genes and its ethnic and geographical distribution in Guizhou of China

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Xi Luo ◽  
Xiang-mei Zhang ◽  
Liu-song Wu ◽  
Jindong Chen ◽  
Yan Chen
Keyword(s):  
Genetic Counseling ◽  
Peripheral Blood ◽  
Clinical Phenotype ◽  
Globin Gene ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Guizhou Province ◽  
Globin Genes ◽  
Phenotype Correlation ◽  
Chi Square

Abstract Background α-thalassemia is relatively endemic in Guizhou province of southwestern China. To predict the clinical manifestations of α-globin gene aberration for genetic counseling, we examined the prevalence of the α-globin triplication and the genotype–phenotype correlation in this subpopulation Methods A cohort of 7644 subjects was selected from nine ethnicities covering four regions in Guizhou province of China. Peripheral blood was collected from each participant for routine blood testing and hemoglobin electrophoresis. PCR-DNA sequencing and Gap-PCR were used to identify the thalassemia gene mutations. Chi-square tests and one-way analysis of variance (ANOVA) were used to statistically analyze the data. Results We found that the frequency of α-globin triplication in Guizhou province was 0.772% (59/7644). Genotypically, the αααanti4.2/αα accounted for 0.523% (40/7644), the αααanti3.7/αα for 0.235% (18/7644), and the αααanti3.7/–SEA for 0.013% (1/7644). The αααanti4.2/αα is more prevalent than the αααanti3.7/αα in Guizhou. In addition, the frequency of the HKαα/αα (that by GAP-PCR is like αααanti4.2/-α3.7) was 0.235% (18/7644). Ethnically, the Tujia group presented the highest prevalence (2.47%) of α-globin triplication. Geographically, the highest frequency of the α-globin triplication was identified in Qiannan region (2.23%). Of the triplicated α-globin cases, 5 coinherited with heterozygote β-thalassemia and presented various clinical manifestations of anemia. Conclusions These data will be used to update the Chinese triplicated α-globin thalassemia database and provide insights into the pathogenesis of thalassemia. These findings will be helpful for the diagnosis of thalassemia and future genetic counseling in those regions.

scholarly journals SPECTRUM OF BETA GLOBIN GENE MUTATIONS IN EGYPTIAN CHILDREN WITH β- THALASSEMIA

2014 ◽  
Vol 6 (1) ◽  
pp. e2014071 ◽  
Author(s):  
MR El-Shanshory ◽  
Adel Abd Elhaleim Hagag
Keyword(s):  
Dna Sequencing ◽  
Blood Count ◽  
Complete Blood Count ◽  
Globin Gene ◽  
Gene Mutations ◽  
Thalassemia Major ◽  
Direct Dna Sequencing ◽  
Rare Mutations ◽  
Egyptian Children

Background: The molecular defects resulting in β-thalassemia phenotype, in the Egyptian population show a clear heterogenic mutations pattern. PCR based techniques, including direct DNA sequencing are effective on the molecular detection and characterization of these mutations. The molecular characterization of β-thalassemia is absolutely necessary for carrier screening, for genetic counseling, and to offer prenatal diagnosis.The aim of the work: was to evaluate the different β-globin gene mutations in one hundred Egyptian children with β-thalassemia. Patients and Methods: One hundred of β-thalassemic Egyptian children, covering most Egyptian Governorates. All patients were subjected to meticulous history taking, clinical examinations, complete blood count, complete blood count, hemoglobin electrophoresis, serum ferritin and direct fluorescent DNA sequencing of β-globin gene to detect the frequency of different mutations in studied patients. Results: The most common mutations among patients were IVS I-110(G>A) 48%, IVS I-6(T>C) 40%, IVS I-1(G>A)19%,IVS I-5(G>C)10%, IVS II-848 (C>A) 9%, IVS II-745(C>G) 8%, IVS II-1(G>A) 7%, codon"Cd"39(C> T) 4%,-87(C>G) 3% and the rare mutations were: Cd37 (G>A), Cd8 (-AA), Cd29(-G), Cd5 (-CT), Cd6(-A), Cd8/9(+G), Cd 106/107(+G), Cd27(C>T), IVS II-16(G> C), Cd 28 (-C), Cap+1(A>C), -88(C>A), all of these rare mutations were present in 1%. There was considerable variation in phenotypic severity among patients resulting from interaction of different β° and β+mutations, 79(79%) patients were thalassemia major (TM) and 21(21%) were thassemia intermedia (TI), without genotype phenotype association. Conclusion: Direct DNA sequencing provides insights for the frequency of different mutations in β- thalassemic patients including rare and /or unknown ones.

Two Novel β-Thalassemia Alleles in the Chinese: the IVS-II-2 (−T) and Nucleotide +8 (C→T) β-Globin Gene Mutations

Hemoglobin ◽  
2000 ◽  
Vol 24 (4) ◽  
pp. 327-332 ◽  
Author(s):  
S. K. Ma ◽  
S. Y. Ha ◽  
A. Y. Y. Chan ◽  
G. C. F. Chan ◽  
Y. L. Lau ◽  
...  
Keyword(s):  
Globin Gene ◽  
Gene Mutations
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