{{Rsnum
|rsid=13042395
|Chromosome=20
|position=773867
|Orientation=plus
|GMAF=0.1249
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene=SLC52A3
|Gene_s=SLC52A3
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 88.5 | 11.5 | 0.0
| HCB | 51.1 | 37.2 | 11.7
| JPT | 46.9 | 45.1 | 8.0
| YRI | 100.0 | 0.0 | 0.0
| ASW | 94.7 | 5.3 | 0.0
| CHB | 51.1 | 37.2 | 11.7
| CHD | 34.3 | 41.7 | 24.1
| GIH | 96.0 | 4.0 | 0.0
| LWK | 98.2 | 1.8 | 0.0
| MEX | 86.2 | 13.8 | 0.0
| MKK | 98.1 | 1.9 | 0.0
| TSI | 87.3 | 12.7 | 0.0
| HapMapRevision=28
}}[[rs13042395]] is a SNP in the [[C20orf54]] gene.

In a large study of Han Chinese [[esophageal cancer]] patients [specifically esophageal squamous cell carcinoma (ESCC)], the [[rs13042395]](T) allele was associated with lowered risk (odds ratio 0.86, p = 1.21 x 10e-11).[http://www.nature.com/ng/journal/vaop/ncurrent/ris/ng.648.ris]

In this same study [http://www.nature.com/ng/journal/vaop/ncurrent/ris/ng.648.ris], [[rs13042395]](T) was also associated with lower risk for [[gastric cancer]] (aka [[stomach cancer]]), with an odds ratio of 0.91 (3 x 10e-3).

{{omim
|id=133239
|rsnum=13042395
}}

{{PMID Auto
|PMID=22744421
|Title=Replication study of PLCE1 and C20orf54 polymorphism and risk of esophageal cancer in a Chinese population
}}

{{PMID|21427165|OA=1
}} Genetic variants at 1q22 and 10q23 reproducibly associated with gastric cancer susceptibility in a Chinese population.

{{PMID|22037551}} A genome-wide association study identifies new susceptibility loci for non-cardia gastric cancer at 3q13.31 and 5p13.1.

{{PMID Auto
|PMID=22805490
|Title=Genetic variation in C20orf54, PLCE1 and MUC1 and the risk of upper gastrointestinal cancers in Caucasian populations.
|OA=1
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | FTDNA2}}
{{on chip | FTDNA}}
{{on chip | Illumina Human 1M}}