{{Rsnum
|rsid=7322347
|Gene=HTR2A
|Chromosome=13
|position=46835968
|Orientation=plus
|GMAF=0.4307
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;T)
|geno3=(T;T)
|Gene_s=HTR2A
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;T)
| geno3=(T;T)
| CEU | 15.9 | 49.6 | 34.5
| HCB | 3.6 | 27.7 | 68.6
| JPT | 8.0 | 38.4 | 53.6
| YRI | 46.9 | 42.9 | 10.2
| ASW | 47.4 | 42.1 | 10.5
| CHB | 3.6 | 27.7 | 68.6
| CHD | 2.8 | 40.4 | 56.9
| GIH | 5.0 | 49.5 | 45.5
| LWK | 54.5 | 39.1 | 6.4
| MEX | 19.3 | 45.6 | 35.1
| MKK | 58.3 | 35.3 | 6.4
| TSI | 28.4 | 43.1 | 28.4
| HapMapRevision=28
}}Exploration of 19 serotoninergic candidate genes in adults and children with [[attention-deficit/hyperactivity disorder]] identifies association for [[5HT2A]], [[DDC]] and [[MAOB]]. A allele associated with [[ADHD]] in children.

{{PMID Auto
|PMID=22751492
|Title=Family-based study of HTR2A in suicide attempts: observed gene, gene x environment and parent-of-origin associations.
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | FTDNA2}}
{{on chip | FTDNA}}