IthaID: 2463

Names and Sequences

Functionality: Globin gene causative mutation Pathogenicity: Pathogenic / Likely Pathogenic
Common Name: TTS +99 C>C HGVS Name: HBB:c.*233G>C
Hb Name: N/A Protein Info: N/A

Context nucleotide sequence:

Also known as:

Comments: This variant was described in a cohort of Palestinians with β-thal trait or disease as a possible β+ allele [PMID: 23321370]. Nevertheless, a subsequent study investigating 18 individuals with the HBB:c.*233G>C variant gave no evidence for pathogenicity, strongly suggesting that it is not associated with a β-thal phenotype [PMID: 26524961].

We follow the HGVS sequence variant nomenclature and IUPAC standards.


Hemoglobinopathy Group: Thalassaemia
Hemoglobinopathy Subgroup: β-thalassaemia
Allele Phenotype:β+
Associated Phenotypes: N/A


Chromosome: 11
Locus: NG_000007.3
Locus Location: 72251
Size: 1 bp
Located at: β
Specific Location: 3'UTR

Other details

Type of Mutation: Point-Mutation(Substitution)
Effect on Gene/Protein Function: Other 3'UTR site (mRNA Processing)
Ethnic Origin: Palestinian
Molecular mechanism: N/A
Inheritance: Recessive
DNA Sequence Determined: Yes

In silico pathogenicity prediction

Sequence Viewer

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Publications / Origin

  1. Sirdah MM, Sievertsen J, Al-Yazji MS, Tarazi IS, Al-Haddad RM, Horstmann RD, Timmann C, The spectrum of β-thalassemia mutations in Gaza Strip, Palestine., Blood Cells Mol. Dis. , 50(4), 247-51, 2013 PubMed
  2. Smith DL, Mitui M, Park JY, Luu HS, Timmons CF, Characterization of the HBB: c.*233G > C Variant: No Evidence of a β-Thalassemic Phenotype., Hemoglobin , 40(1), 25-8, 2016 PubMed
Created on 2014-06-03 15:35:00, Last reviewed on 2021-02-12 15:25:04 (Show full history)

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