{{Rsnum
|rsid=7606754
|Gene=COL4A3
|Chromosome=2
|position=227270464
|Orientation=plus
|GMAF=0.3517
|Gene_s=COL4A3,PAPPA
|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 | 15.9 | 43.4 | 40.7
| HCB | 13.4 | 53.0 | 33.6
| JPT | 30.4 | 42.9 | 26.8
| YRI | 4.1 | 28.3 | 67.6
| ASW | 8.8 | 33.3 | 57.9
| CHB | 13.4 | 53.0 | 33.6
| CHD | 24.1 | 44.4 | 31.5
| GIH | 8.9 | 32.7 | 58.4
| LWK | 1.9 | 26.2 | 72.0
| MEX | 21.4 | 51.8 | 26.8
| MKK | 4.5 | 25.8 | 69.7
| TSI | 16.7 | 45.1 | 38.2
| HapMapRevision=28
}}{{PMID Auto GWAS
  |PMID=23291589
  |Trait=Corneal structure
  |Title=Genome-wide association analyses identify multiple loci associated with central corneal thickness and keratoconus.
  |RiskAllele=A
  |Pval=1E-9
  |OR=.07
  |ORtxt=[0.05-0.09] unit decrease
  |OA=1
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | Illumina Human 1M}}