{{Rsnum
|rsid=2838923
|Gene=COL18A1
|Chromosome=21
|position=45427029
|Orientation=plus
|GMAF=0.4766
|Gene_s=COL18A1
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 50.4 | 46.0 | 3.5
| HCB | 28.5 | 47.4 | 24.1
| JPT | 21.2 | 42.5 | 36.3
| YRI | 4.8 | 33.3 | 61.9
| ASW | 10.5 | 45.6 | 43.9
| CHB | 28.5 | 47.4 | 24.1
| CHD | 22.9 | 49.5 | 27.5
| GIH | 39.6 | 47.5 | 12.9
| LWK | 5.5 | 34.5 | 60.0
| MEX | 36.2 | 41.4 | 22.4
| MKK | 9.6 | 39.7 | 50.6
| TSI | 51.0 | 42.2 | 6.9
| HapMapRevision=28
}}{{PMID Auto GWAS
|PMID=22745009
|Trait=None
|Title=Multiple loci influencing hippocampal degeneration identified by genome scan.
|RiskAllele=A
|Pval=8E-7
|OR=None
|ORtxt=None
|OA=1
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | FTDNA2}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}