IthaID: 13
Names and Sequences
| Functionality: | Globin gene causative mutation | Pathogenicity: | Pathogenic / Likely Pathogenic |
|---|---|---|---|
| Common Name: | -86 C>G | HGVS Name: | HBB:c.-136C>G |
| Hb Name: | N/A | Protein Info: | β nt -86 C>G |
Context nucleotide sequence:
AGACCTCACCCTGTGGAGCCACACC [A/C/G] TAGGGTTGGCCAATCTACTCCCAGG (Strand: -)
Also known as:
Comments: The mutation is located at -86 within the proximal CACCC motif in the promoter of the HBB gene. This motif is an erythroid-specific binding site of EKLF, a transcription factor with critical role in erythropoiesis and regulation of haemoglobin switching.
We follow the HGVS sequence variant nomenclature and IUPAC standards.
Phenotype
| Hemoglobinopathy Group: | Thalassaemia |
|---|---|
| Hemoglobinopathy Subgroup: | β-thalassaemia |
| Allele Phenotype: | β+ |
| Associated Phenotypes: |
Haemolytic anaemia [HP:0001878] Ineffective erythropoiesis [HP:0010972] |
Location
| Chromosome: | 11 |
|---|---|
| Locus: | NG_000007.3 |
| Locus Location: | 70459 |
| Size: | 1 bp |
| Located at: | β |
| Specific Location: | Promoter |
Other details
| Type of Mutation: | Point-Mutation(Substitution) |
|---|---|
| Effect on Gene/Protein Function: | Promoter (Transcription) |
| Ethnic Origin: | Thai, Lebanese, Syrian |
| Molecular mechanism: | N/A |
| Inheritance: | Recessive |
| DNA Sequence Determined: | Yes |
In silico pathogenicity prediction
Note:
The impact thresholds provided in this section are based on the analyses performed in Tamana et.al. For any given tool, the impact thresholds defined for the set of variants with the same effect on function as the variant examined, are preferred over those defined for the full dataset.
Sequence Viewer
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Frequencies
Publications / Origin
- Kazazian HH, The thalassemia syndromes: molecular basis and prenatal diagnosis in 1990., Seminars in hematology, 27(3), 209-28, 1990 PubMed
- Thein SL, Winichagoon P, Hesketh C, Best S, Fucharoen S, Wasi P, Weatherall DJ, The molecular basis of beta-thalassemia in Thailand: application to prenatal diagnosis., American journal of human genetics, 47(3), 369-75, 1990 PubMed
- Moassas F, Alabloog A, Murad H, Description of a Rare β-Globin Gene Mutation: -86 (C>G) (HBB: c.-136C>G) Observed in a Syrian Family., Hemoglobin, 42(3), 203-205, 2018 PubMed
Created on 2010-06-16 16:13:14,
Last reviewed on 2019-05-09 13:09:46 (Show full history)
| A/A | Date | Curator(s) | Comments |
|---|---|---|---|
| 1 | 2010-06-16 16:13:14 | The IthaGenes Curation Team | Created |
| 2 | 2013-10-15 17:28:32 | The IthaGenes Curation Team | Reviewed. |
| 3 | 2014-04-28 17:51:39 | The IthaGenes Curation Team | Reviewed. Added ClinVar link and reference. |
| 4 | 2019-05-09 13:08:50 | The IthaGenes Curation Team | Reviewed. Mutation comment, Ethnic origin and Reference added. |
| 5 | 2019-05-09 13:09:46 | The IthaGenes Curation Team | Reviewed. Comment text edited. |
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IthaGenes was last updated on 2024-04-18 10:10:45