rs758570021

A SNP in the SLC52A3 gene on chromosome 20. Its most notable genotype is T;T: Brown-Vialetto-Van Laere syndrome type 1 mutation; riboflavin treatment recommended

Gene
SLC52A3
Location
Chr 20761,140 (GRCh38)
Highest magnitude
8.0Very important
Tested on
Not on consumer chips

Genotypes

As shown in 23andMe and AncestryDNA files.

On SNPedia: (G;G), (G;T), (T;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.

Conditions, medicines and genes

Notes

From SNPedia

Notes

G;T

Unaffected carrier in absence of second mutation; see discussion at Brown-Vialetto-Van laere syndrome.

T;T

See discussion at Brown-Vialetto-Van laere syndrome, including recommendation for immediate riboflavin supplementation.

Source and license

Adapted from rs758570021 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.