{{Rsnum
|rsid=2472553
|Gene=CHRNA2
|Chromosome=8
|position=27470994
|Orientation=plus
|GMAF=0.2521
|Gene_s=CHRNA2
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 69.6 | 28.6 | 1.8
| HCB | 26.7 | 62.2 | 11.1
| JPT | 21.1 | 49.5 | 29.4
| YRI | 59.9 | 37.3 | 2.8
| ASW | 69.1 | 29.1 | 1.8
| CHB | 26.7 | 62.2 | 11.1
| CHD | 31.5 | 45.4 | 23.1
| GIH | 65.3 | 28.6 | 6.1
| LWK | 60.6 | 34.9 | 4.6
| MEX | 58.6 | 36.2 | 5.2
| MKK | 67.3 | 28.8 | 3.8
| TSI | 85.9 | 13.1 | 1.0
| HapMapRevision=28
}}{{PMID Auto
|PMID=24467848
|Title=A signal peptide missense mutation associated with nicotine dependence alters α2*-nicotinic acetylcholine receptor function
}}

{{PMID Auto
|PMID=19307444
|Title=Examination of the nicotine dependence (NICSNP) consortium findings in the Iowa adoption studies population.
|OA=1
}}

{{PMID Auto
|PMID=24253422
|Title=Significant associations of CHRNA2 and CHRNA6 with nicotine dependence in European American and African American populations
}}
{{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}}