rs118192178
A SNP in the RYR1 gene on chromosome 19. Its most notable genotype is C;G: malignant hyperthermia
- Gene
- RYR1
- Location
- Chr 1938,500,898 (GRCh38)
- Highest magnitude
- 3.0Important
- Tested on
- Not on consumer chips
Genotypes
As shown in 23andMe and AncestryDNA files.
- C;CGoodcommon in clinvar
- C;GMost notableBadmalignant hyperthermia
- C;TBadmalignant hyperthermia
On SNPedia: (C;C), (C;G), (C;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.
Related
Other RYR1 SNPs
- rs118192177C;TMalignant Hyperthermia susceptibilityVery important
- rs146876145C;TMalignant Hyperthermia susceptibilityVery important
- rs28933396A;Aquite likely to have central core diseaseVery important
- rs118192168A;Alikely severe central core diseaseVery important
- rs118192171AC;TTlikely severe central core diseaseVery important
- rs63749869A;Glikely severe central core diseaseVery important
- rs118192169-;TTCTACAACAAGAGCGAGGATlikely severe central core diseaseVery important
- rs193922781C;Tmalignant hyperthermiaVery important
Notes
From SNPedia
Notes
aka c.7522C>T (p.Arg2508Cys or R2508C) and also c.7522C>G (p.Arg2508Gly or R2508G), both of which are considered pathogenic in either ClinVar and/or the RYR1-based database 23andMe name for c.7522C>T: i6017673
C;G
You may be at higher risk for a bad response to anesthetics.
C;T
You may be at higher risk for a bad response to anesthetics.
Source and license
Adapted from rs118192178 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.