{{Rsnum
|rsid=2329340
|Gene=DDC
|Chromosome=7
|position=50552531
|Orientation=plus
|GMAF=0.348
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=DDC
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 44.2 | 40.7 | 15.0
| HCB | 27.0 | 44.5 | 28.5
| JPT | 26.5 | 50.4 | 23.0
| YRI | 59.2 | 36.1 | 4.8
| ASW | 45.6 | 49.1 | 5.3
| CHB | 27.0 | 44.5 | 28.5
| CHD | 22.9 | 45.0 | 32.1
| GIH | 31.7 | 47.5 | 20.8
| LWK | 64.5 | 31.8 | 3.6
| MEX | 60.3 | 37.9 | 1.7
| MKK | 56.4 | 37.2 | 6.4
| TSI | 46.1 | 41.2 | 12.7
| HapMapRevision=28
}}{{PMID|19455600}} a haplotype consisting of [[rs2329340]](A), [[rs11974297]](C), [[rs2044859]](T) and [[rs11761683]](G) associated with increased incidence of [[migraine]] with aura among a sample of 528 migraine patients (308 without aura, 220 with aura) and 528 sex-matched migraine-free controls

{{PMID|22397633}} Neurotransmitter systems and neurotrophic factors in autism: association study of 37 genes suggests involvement of DDC.

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