{{Rsnum
|rsid=344550
|Gene=C3
|Chromosome=19
|position=6682942
|Orientation=plus
|GMAF=0.3811
|Gene_s=C3
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;G)
| geno3=(G;G)
| CEU | 46.2 | 40.0 | 13.8
| HCB | 40.0 | 42.2 | 17.8
| JPT | 43.2 | 47.7 | 9.1
| YRI | 38.1 | 39.7 | 22.2
| ASW | 0.0 | 0.0 | 0.0
| CHB | 40.0 | 42.2 | 17.8
| CHD | 0.0 | 0.0 | 0.0
| GIH | 0.0 | 0.0 | 0.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 0.0 | 0.0
| MKK | 0.0 | 0.0 | 0.0
| TSI | 0.0 | 0.0 | 0.0
| HapMapRevision=28
}}{{PMID Auto
|PMID=22170086
|Title=Polymorphisms in complement system genes and risk of non-Hodgkin lymphoma
|OA=1
}}

{{PMID Auto
|PMID=17903301
|Title=Genome-wide association of echocardiographic dimensions, brachial artery endothelial function and treadmill exercise responses in the Framingham Heart Study.
|OA=1
}}

{{PMID Auto
|PMID=19828715
|Title=Complement component 3 polymorphisms interact with polyunsaturated fatty acids to modulate risk of metabolic syndrome.
}}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | FTDNA}}