rs878853856
A SNP in the PTCH1 gene on chromosome 9. Its most notable genotype is A;G: Basal cell nevus syndrome
- Gene
- PTCH1
- Location
- Chr 995,453,533 (GRCh38)
- Highest magnitude
- 5.3Very important
- Tested on
- AncestryDNA
Genotypes
Plus strand, as in 23andMe and AncestryDNA files.
- A;GMost notableBadBasal cell nevus syndrome
- A;AGoodcommon in clinvar
SNPedia records rs878853856 on the minus strand: (C;T), (T;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.
Related
Other PTCH1 SNPs
- rs199476090A;GBasal cell nevus syndromeVery important
- rs766313615A;GBasal cell nevus syndromeVery important
- rs778260156G;TBasal cell nevus syndromeVery important
- rs786204056A;GBasal cell nevus syndromeVery important
- rs863224442C;TBasal cell nevus syndromeVery important
- rs863224443C;TBasal cell nevus syndromeVery important
- rs863224444C;TBasal cell nevus syndromeVery important
- rs863224484-;CPossible miscall in 23andMe and Ancestry data; otherwise, Basal cell nevus syndromeVery important
Source and license
Adapted from rs878853856 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.