{{Rsnum
|rsid=1923886
|Gene=HTR2A
|Chromosome=13
|position=46849156
|Orientation=plus
|GMAF=0.3623
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=HTR2A
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 24.8 | 50.4 | 24.8
| HCB | 22.6 | 53.3 | 24.1
| JPT | 19.5 | 49.6 | 31.0
| YRI | 0.0 | 3.4 | 96.6
| ASW | 1.8 | 12.3 | 86.0
| CHB | 22.6 | 53.3 | 24.1
| CHD | 28.4 | 43.1 | 28.4
| GIH | 37.6 | 51.5 | 10.9
| LWK | 0.0 | 3.6 | 96.4
| MEX | 24.1 | 46.6 | 29.3
| MKK | 0.0 | 10.3 | 89.7
| TSI | 15.7 | 46.1 | 38.2
| HapMapRevision=28
}}{{PMID Auto
|PMID=19584773
|Title=Association between the serotonin 2A receptor gene and bipolar affective disorder in an Australian cohort
}}
: "Haplotype association analysis suggests that the haplotype CCGCA (at SNPs [[rs3125]], [[rs6314]], [[rs1923886]], [[rs2224721]] and [[rs2770296]]) is protective against [[bipolar disorder]] (P = 0.021, odds ratio 0.63) and the rarer haplotype CCACG confers risk to the disorder (P = 0.0065, odds ratio 3.08)."

{{PMID Auto
|PMID=18937842
|Title=The influence of serotonin- and other genes on impulsive behavioral aggression and cognitive impulsivity in children with attention-deficit/hyperactivity disorder (ADHD): Findings from a family-based association test (FBAT) analysis.
|OA=1
}}

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