{{Rsnum
|rsid=1044394
|Gene=CHRNA4
|Chromosome=20
|position=63350733
|Orientation=plus
|GMAF=0.1276
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=CHRNA4
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 90.3 | 8.8 | 0.9
| HCB | 100.0 | 0.0 | 0.0
| JPT | 100.0 | 0.0 | 0.0
| YRI | 32.0 | 46.3 | 21.8
| ASW | 56.1 | 38.6 | 5.3
| CHB | 100.0 | 0.0 | 0.0
| CHD | 0.0 | 0.0 | 0.0
| GIH | 90.1 | 9.9 | 0.0
| LWK | 30.0 | 50.0 | 20.0
| MEX | 84.5 | 15.5 | 0.0
| MKK | 42.3 | 45.5 | 12.2
| TSI | 79.4 | 19.6 | 1.0
| HapMapRevision=28
}}{{PMID Auto
|PMID=19482438
|Title=Association of genes coding for the alpha-4, alpha-5, beta-2 and beta-3 subunits of nicotinic receptors with cigarette smoking and nicotine dependence
}}

{{PMID Auto
|PMID=17613539
|Title=Association of attentional network function with exon 5 variations of the CHRNA4 gene.
}}

{{PMID Auto
|PMID=21445957
|Title=Association of CHRNA4 polymorphisms with smoking behavior in two populations.
|OA=1
}}

{{PMID Auto
|PMID=23350800
|Title=Nominal association with CHRNA4 variants and nicotine dependence.
|OA=1
}}

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