{{Rsnum
|rsid=2236484
|Gene=COL18A1
|Chromosome=21
|position=45511770
|Orientation=plus
|GMAF=0.4959
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Gene_s=COL18A1
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 18.8 | 45.3 | 35.9
| HCB | 31.1 | 46.7 | 22.2
| JPT | 35.1 | 45.9 | 18.9
| YRI | 40.3 | 45.1 | 14.6
| ASW | 23.6 | 54.5 | 21.8
| CHB | 31.1 | 46.7 | 22.2
| CHD | 20.4 | 58.3 | 21.3
| GIH | 31.3 | 48.5 | 20.2
| LWK | 39.8 | 44.4 | 15.7
| MEX | 0.0 | 0.0 | 0.0
| MKK | 39.2 | 51.4 | 9.5
| TSI | 16.3 | 48.0 | 35.7
| HapMapRevision=28
}}{{PMID Auto
|PMID=21274745
|Title=Variation in folate pathway genes and distal colorectal adenoma risk: a sigmoidoscopy-based case-control study
|OA=1
}}

{{PMID Auto
|PMID=19493349
|Title=118 SNPs of folate-related genes and risks of spina bifida and conotruncal heart defects.
|OA=1
}}

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