IthaID: 424

Names and Sequences

Functionality: Globin gene causative mutation Pathogenicity: Pathogenic / Likely Pathogenic
Common Name: Poly A (AATAAA>AATAAG) HGVS Name: HBA2:c.*94A>G
Hb Name: N/A Protein Info: α2 nt 819 A>G

Context nucleotide sequence:

Also known as: αPolyA1, αT-Saudi

We follow the HGVS sequence variant nomenclature and IUPAC standards.

External Links


Hemoglobinopathy Group: Thalassaemia
Hemoglobinopathy Subgroup: α-thalassaemia
Allele Phenotype:α+/α0
Associated Phenotypes: Haemolytic anaemia [HP:0001878]


Chromosome: 16
Locus: NG_000006.1
Locus Location: 34557
Size: 1 bp
Located at: α2
Specific Location: Poly(A)

Other details

Type of Mutation: Point-Mutation(Substitution)
Effect on Gene/Protein Function: RNA cleavage - Poly(A) signal (mRNA Processing)
Ethnic Origin: Arab, Middle East, Mediterranean
Molecular mechanism: N/A
Inheritance: Recessive
DNA Sequence Determined: No

In silico pathogenicity prediction

Sequence Viewer

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Publications / Origin

  1. Higgs DR, Goodbourn SE, Lamb J, Clegg JB, Weatherall DJ, Proudfoot NJ, Alpha-thalassaemia caused by a polyadenylation signal mutation., Nature , 306(5941), 398-400, 1983 PubMed
  2. Whitelaw E, Proudfoot N, Alpha-thalassaemia caused by a poly(A) site mutation reveals that transcriptional termination is linked to 3' end processing in the human alpha 2 globin gene., EMBO J. , 5(11), 2915-22, 1986 PubMed
  3. Thein SL, Wallace RB, Pressley L, Clegg JB, Weatherall DJ, Higgs DR, The polyadenylation site mutation in the alpha-globin gene cluster., Blood , 71(2), 313-9, 1988 PubMed
  4. Fei YJ, Oner R, Bözkurt G, Gu LH, Altay C, Gurgey A, Fattoum S, Baysal E, Huisman TH, Hb H disease caused by a homozygosity for the AATAAA-->AATAAG mutation in the polyadenylation site of the alpha 2-globin gene: hematological observations., Acta Haematol. , 88(2), 82-5, 1992 PubMed
  5. Adekile AD, Gu LH, Baysal E, Haider MZ, al-Fuzae L, Aboobacker KC, al-Rashied A, Huisman TH, Molecular characterization of alpha-thalassemia determinants, beta-thalassemia alleles, and beta S haplotypes among Kuwaiti Arabs., Acta Haematol. , 92(4), 176-81, 1994 PubMed
  6. Viprakasit V, Green S, Height S, Ayyub H, Higgs DR, Hb H hydrops fetalis syndrome associated with the interaction of two common determinants of alpha thalassaemia (--MED/(alpha)TSaudi(alpha))., Br. J. Haematol. , 117(3), 759-62, 2002 PubMed
  7. Baysal E, α-Thalassemia syndromes in the United Arab Emirates., Hemoglobin , 35(5), 574-80, 2011 PubMed
Created on 2010-06-16 16:13:15, Last reviewed on 2020-10-02 10:23:44 (Show full history)

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