IthaID: 3332

Names and Sequences

Functionality: Disease modifying mutation Pathogenicity: N/A
Common Name: rs4025935 HGVS Name: NG_009246.1:g.4023_4024delTG

Context nucleotide sequence:

Also known as:

Comments: The GSTM1 null genotype (rs4025935) associated with HbA1 and HbS levels in sickle cell disease patients from Saudi Arabia [PMID: 27885941]. It is a predisposing factor for cardiac iron overload in β-thalassaemia major patients with low body iron as assessed by lifelong serum ferritin levels [PMID: 18477036]. It associated with significantly shorter cardiac MRI T2* values (hence, cardiac iron overload) independent of serum ferritin levels in Egyptian patients with β-thalassaemia major [PMID: 26288192].

External Links


Allele Phenotype (Cis):N/A
Allele Phenotype (Trans):N/A
Associated Phenotypes: Cardiac iron load
Anaemia [HP:0001903]


Chromosome: 1
Locus: NG_009246.1
Locus Location: 4023
Size: 2 bp
Located at: GSTM1
Specific Location: 5'UTR 0

Other details

Type of Mutation: Point-Mutation(Deletion)
Effect on Gene/Protein Function: N/A
Ethnic Origin: Saudi, Egyptian, Sardinian
Molecular mechanism: N/A
Inheritance: Quantitative trait
DNA Sequence Determined: Yes

Sequence Viewer

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Publications / Origin

  1. Origa R, Satta S, Matta G, Galanello R, Glutathione S-transferase gene polymorphism and cardiac iron overload in thalassaemia major., Br. J. Haematol. , 142(1), 143-5, 2008 PubMed
  2. Mokhtar GM, Sherif EM, Habeeb NM, Abdelmaksoud AA, El-Ghoroury EA, Ibrahim AS, Hamed EM, Glutathione S-transferase gene polymorphism: Relation to cardiac iron overload in Egyptian patients with Beta Thalassemia Major., Hematology , 21(1), 46-53, 2016 PubMed
  3. Abu-Duhier F, Mir R, GSTT1 (rs4025935) null genotype is associated with increased risk of sickle cell disease in the populations of Tabuk-Northwestern region of Saudi Arabia., Hematology , 2016 PubMed
Created on 2018-05-03 19:59:26, Last reviewed on 2019-12-23 12:04:04 (Show full history)

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