IthaID: 3445
Names and Sequences
| Functionality: | Neutral polymorphism | Pathogenicity: | Benign / Likely Benign |
|---|---|---|---|
| Common Name: | IVS I-13 G>T | HGVS Name: | HBB:c.92+13G>T |
Context nucleotide sequence:
GCCCTGGGCAGGTTGGTATCAAG [G/T] TTACAAGACAGGTTTAAGGAGAC (Strand: -)
Also known as:
Comments: This mutation is an innocuous SNP associated with a well-characterised cryptic splice donor site in HBB. The cryptic splice donor is activated by mutations IthaID 101, 102, 103, 107 and 111, leading to aberrant splicing, inclusion of intronic material in the HBB mRNA and beta-thalassaemia. Mutations IthaID 107 and 111 retain residual normal splicing activity, and in their presence this SNP may thus conceivably increase normal splicing and ameliorate the associated phenotype.
We follow the HGVS sequence variant nomenclature and IUPAC standards.
Phenotype
| Allele Phenotype: | Neutral |
|---|---|
| Associated Phenotypes: | N/A |
Location
| Chromosome: | 11 |
|---|---|
| Locus: | NG_000007.3 |
| Locus Location: | 70699 |
| Size: | 1 bp |
| Located at: | β |
| Specific Location: | Intron 1 |
Other details
| Type of Mutation: | Point-Mutation(Substitution) |
|---|---|
| Effect on Gene/Protein Function: | N/A |
| Ethnic Origin: | N/A |
| Molecular mechanism: | N/A |
| Inheritance: | Quantitative trait |
| DNA Sequence Determined: | No |
In silico pathogenicity prediction
Publications / Origin
- Treisman R, Orkin SH, Maniatis T, Specific transcription and RNA splicing defects in five cloned beta-thalassaemia genes., Nature, 302(5909), 591-6, 1983
Created on 2019-09-23 12:41:56,
Last reviewed on 2020-09-28 16:56:43 (Show full history)
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