IthaID: 2150

Names and Sequences

Functionality: Globin gene causative mutation Pathogenicity: N/A
Common Name: 1357 bp deletion HGVS Name: NG_000007.3:g.69997_71353del1357
Hb Name: N/A Protein Info: N/A

Also known as: Taiwanese deletion

Comments: The deletion spans 1357 bp on the β-globin gene cluster, removing the proximal part of the β-globin gene. The 5' breakpoint is located at -548 relative to the cap site of the β-globin gene and the 3' breakpoint is located at +810 in the intron II of the β-globin gene. Found as a heterozygote in a proband with elevated HbF and HbA2. The deletion of the β-globin gene promoter may upregulate the promoters of the γ-globin genes to react more readily with enhancer-like sequences that normally occur downstream of the β-globin gene.

We follow the HGVS sequence variant nomenclature and IUPAC standards.

External Links


Hemoglobinopathy Group: Thalassaemia
Hemoglobinopathy Subgroup: β-thalassaemia
Allele Phenotype:N/A
Associated Phenotypes: Haemolytic anaemia [HP:0001878]
Ineffective erythropoiesis [HP:0010972]


Chromosome: 11
Locus: NG_000007.3
Locus Location: 69997
Size: 1.357 kb
Deletion involves: β

Other details

Type of Mutation: Deletion
Ethnic Origin: Taiwanese, Chinese
Molecular mechanism: N/A
Inheritance: Recessive
DNA Breakpoint Determined: Yes

In silico pathogenicity prediction

Sequence Viewer

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Publications / Origin

  1. Huang CH, Chang YY, Chen CH, Ko TM, Molecular characterization of a beta-globin gene deletion of 1357 bp in a Taiwanese beta-thalassemia carrier., Hemoglobin, 32(5), 498-504, 2008 PubMed
  2. Lou JW, Li Q, Wei XF, Huang JW, Xu XM, Identification of the linkage of a 1.357 KB beta-globin gene deletion and A gamma-globin gene triplication in a Chinese family., Hemoglobin, 34(4), 343-53, 2010 PubMed
  3. Cai WJ, Li J, Xie XM, Li DZ, Screening for common β-globin gene cluster deletions in Chinese individuals with increased hemoglobin F., Int J Lab Hematol, 37(6), 752-7, 2015 PubMed
Created on 2013-09-28 17:17:45, Last reviewed on 2020-01-17 11:20:28 (Show full history)

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