{{Rsnum
|rsid=594242
|Gene=HTR2A
|Chromosome=13
|position=46883917
|Orientation=minus
|GMAF=0.1299
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;G)
|geno3=(G;G)
|Gene_s=HTR2A
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;G)
| geno3=(G;G)
| CEU | 70.3 | 26.6 | 3.1
| HCB | 95.6 | 4.4 | 0.0
| JPT | 97.8 | 2.2 | 0.0
| YRI | 74.6 | 23.8 | 1.6
| ASW | 0.0 | 0.0 | 0.0
| CHB | 95.6 | 4.4 | 0.0
| CHD | 0.0 | 0.0 | 0.0
| GIH | 0.0 | 0.0 | 0.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 0.0 | 0.0
| MKK | 0.0 | 0.0 | 0.0
| TSI | 0.0 | 0.0 | 0.0
| HapMapRevision=28
}}{{PMID|16814396}} Three ([[rs643627]]-[[rs594242]]-[[rs6311]]: A-C-T), two ([[rs594242]]-[[rs6311]]: C-T) and a single functional ([[rs6311]]: T) marker were protective against suicidal behavior. 
The complementary makers ([[rs594242]]-[[rs6311]]: G-C and [[rs6311]]: C) were associated with increased risk for non-violent and impulsive suicidal behavior. 
Furthermore, CC-homozygotes for the functional SNP [[rs6311]] reported more anger-  and aggression-related behavior.

{{PMID Auto
|PMID=17590256
|Title=5-HT2A SNPs and the Temperament and Character Inventory.
}}

{{PMID Auto
|PMID=18439448
|Title=Stress, genes and the biology of suicidal behavior.
|OA=1
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}