{{Rsnum
|rsid=1985242
|Gene=HTR3A
|Chromosome=11
|position=113977551
|Orientation=plus
|GMAF=0.4183
|Gene_s=HTR3A
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;T)
|geno3=(T;T)
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;T)
| geno3=(T;T)
| CEU | 12.5 | 41.1 | 46.4
| HCB | 7.4 | 39.0 | 53.7
| JPT | 7.1 | 41.6 | 51.3
| YRI | 53.7 | 38.1 | 8.2
| ASW | 50.9 | 43.9 | 5.3
| CHB | 7.4 | 39.0 | 53.7
| CHD | 15.6 | 42.2 | 42.2
| GIH | 12.9 | 50.5 | 36.6
| LWK | 54.5 | 37.3 | 8.2
| MEX | 34.5 | 39.7 | 25.9
| MKK | 48.7 | 41.7 | 9.6
| TSI | 7.8 | 36.3 | 55.9
| HapMapRevision=28
}}{{PMID Auto
|PMID=23290502
|Title=Serotonin transporter and receptor genes significantly impact nicotine dependence through genetic interactions in both European American and African American smokers
|OA=1
}}

{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}