{{Rsnum
|rsid=2184026
|Gene=GABBR2
|Chromosome=9
|position=98542066
|Orientation=plus
|GMAF=0.2938
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=GABBR2
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 61.1 | 26.5 | 12.4
| HCB | 18.4 | 48.5 | 33.1
| JPT | 15.0 | 50.4 | 34.5
| YRI | 97.3 | 2.7 | 0.0
| ASW | 71.9 | 28.1 | 0.0
| CHB | 18.4 | 48.5 | 33.1
| CHD | 27.8 | 53.7 | 18.5
| GIH | 74.3 | 23.8 | 2.0
| LWK | 94.5 | 5.5 | 0.0
| MEX | 37.9 | 51.7 | 10.3
| MKK | 86.5 | 12.8 | 0.6
| TSI | 61.8 | 29.4 | 8.8
| HapMapRevision=28
}}

{{PMID|15759211|OA=1
}} Associated with [[nicotine Dependence]] as part of several haplotypes, based on a study of 1,000+ subjects including both African-Americans and European-Americans.

The risk haplotype varies between populations. Among African-Americans, the haplotype C-C-G of [[rs2491397]]-[[rs2184026]]-[[rs3750344]] had a significant positive association with [[nicotine dependence]]. Among European-Americans, for [[rs1435252]]-[[rs3780422]]-[[rs2779562]]-[[rs3750344]], the C-A-C-A haplotype was positively associated with [[nicotine dependence]] while the T-A-T-A haplotype was negatively associated.{{PMID|15759211|OA=1
}}

{{omim
|id=607340
|desc=GAMMA-AMINOBUTYRIC ACID B RECEPTOR 2; GABBR2
|rsnum=2184026
}}

{{omim
|id=607340
|rsnum=2184026
|variant=0001
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | Affy500k}}
{{on chip | FTDNA2}}
{{on chip | FTDNA}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}