IthaID: 3148

Names and Sequences

Functionality: Globin gene causative mutation Pathogenicity: Pathogenic / Likely Pathogenic
Common Name: IVS II-3 (+21bp) HGVS Name: HBA1:c.283_300+3dup
Hb Name: N/A Protein Info: N/A

Context nucleotide sequence:

Also known as:

Comments: The heterozygous form of the insertion produces small amount of unstable haemoglobin (Hb) with no specific effect on Hb level and RBC indices, but double heterozygote with other trait presenting mutations can increase unstable Hb production in a manner that presents with severe anemia.

External Links

No available links


Hemoglobinopathy Group: Structural Haemoglobinopathy
Hemoglobinopathy Subgroup: α-chain variant
Allele Phenotype:N/A
Stability: Unstable
Oxygen Affinity: N/A
Associated Phenotypes: Haemolytic anaemia [HP:0001878]


Chromosome: 16
Locus: NG_000006.1
Locus Location: 37979
Size: 21 bp
Located at: α1
Specific Location: Intron 2

Other details

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

Sequence Viewer

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Publications / Origin

  1. Zekavat OR, Dehghani SJ, Imanifard J, Dehbozorgian J, Zareifar S, Haghpanah S, Introduction of novel α1-hemoglobin gene mutation with transfusion-dependent phenotype., Hematology , 2016 PubMed
Created on 2017-01-24 11:55:48, Last reviewed on 2021-05-26 09:01:05 (Show full history)

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