rs34021271
A SNP in the HBA1 gene on chromosome 16. Its most notable genotype is -;T: Alpha-thalassemia allele carrier
- Gene
- HBA1
- Location
- Chr 16177,378 (GRCh38)
- Highest magnitude
- 3.0Important
- Tested on
- 23andMe
Genotypes
As shown in 23andMe and AncestryDNA files.
- -;-Goodcommon/normal
- -;TMost notableBadAlpha-thalassemia allele carrier
On SNPedia: (-;-), (-;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.
Related
Conditions, medicines and genes
Other HBA1 SNPs
- rs34353199-;AAGAlpha-thalassemia allele carrierImportant
- rs34883113A;GAlpha-thalassemia allele carrierImportant
- rs35059618A;TAlpha-thalassemia allele carrierImportant
- rs35974739C;TAlpha-thalassemia allele carrierImportant
- rs35992350-;CCCAlpha-thalassemia allele carrierImportant
- rs35993655C;TAlpha-thalassemia allele carrierImportant
- rs63749948A;CAlpha-thalassemia allele carrierImportant
- rs63750090A;GAlpha-thalassemia allele carrierImportant
Notes
From SNPedia
Notes
-;T
See discussion at HBA2 and Alpha Thalassemia.
Source and license
Adapted from rs34021271 on SNPedia, using a snapshot taken October 16, 2026. SNPedia content is shared under CC BY-NC-SA 3.0 US, and this page is shared under the same license.
SNPedia is a community-edited wiki. Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice. Magnitude is a community rating of how interesting a genotype is, not a risk score.