{{Rsnum
|rsid=3027415
|Gene=MAOB
|Chromosome=X
|position=43755194
|Orientation=plus
|GMAF=0.1137
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 16.9 | 15.4 | 67.7
| HCB | 2.9 | 2.2 | 94.9
| JPT | 0.0 | 0.0 | 100.0
| YRI | 0.0 | 2.1 | 97.9
| ASW | 3.6 | 3.6 | 92.7
| CHB | 2.9 | 2.2 | 94.9
| CHD | 1.9 | 3.7 | 94.4
| GIH | 5.0 | 1.0 | 94.0
| LWK | 2.8 | 1.9 | 95.3
| MEX | 0.0 | 0.0 | 0.0
| MKK | 8.1 | 7.4 | 84.5
| TSI | 0.0 | 0.0 | 0.0
| HapMapRevision=28
}}Exploration of 19 serotoninergic candidate genes in adults and children with [[attention-deficit/hyperactivity disorder]] identifies association for [[5HT2A]], [[DDC]] and [[MAOB]]. {{PMID|17938636}} C allele associated with adult [[ADHD]] inattentive type.

{{PMID Auto
|PMID=18937309
|Title=Sexually dimorphic effects of four genes (COMT, SLC6A2, MAOA, SLC6A4) in genetic associations of ADHD: a preliminary study.
|OA=1
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}