IthaID: 33

Names and Sequences

Functionality: Globin gene causative mutation Pathogenicity: Pathogenic / Likely Pathogenic
Common Name: -22 to +23 (+45 bp duplication) HGVS Name: NG_000007.3:g.70573_70617dup
Hb Name: N/A Protein Info: N/A

Context nucleotide sequence:

Also known as:

Comments: The variant is a duplication of a region of 45 nucleotides from -22 to +23 of the HBB cDNA (coordinates: GRCh38.p13, NC_000011.10). This region includes the start codon encoding two open reading frames. Therefore, transcription from the original initiation codon produces an irrelevant seven-residue peptide, while residual translation from the novel initiation codon results in diminished protein of b-globin.

We follow the HGVS sequence variant nomenclature and IUPAC standards.

External Links


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


Chromosome: 11
Locus: NG_000007.3
Locus Location: 70573
Size: 45 bp
Located at: β
Specific Location: Exon 1

Other details

Type of Mutation: Point-Mutation(Insertion)
Effect on Gene/Protein Function: Insertion/Deletion of codons (Protein Structure)
Ethnic Origin: Maori
Molecular mechanism: N/A
Inheritance: Recessive
DNA Sequence Determined: Yes

In silico pathogenicity prediction

Sequence Viewer

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Publications / Origin

  1. Blacklock HA, Case J, Chan T, Raizis T, Doocey R, Fellowes A, Royle G, Jackson S, Brennan S, George P, Novel sequence insertion in a Mâori patient with transfusion-dependent beta-thalassaemia., British journal of haematology, 131(3), 400-2, 2005 PubMed
Created on 2010-06-16 16:13:14, Last reviewed on 2021-10-27 08:00:25 (Show full history)

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