{{Rsnum
|rsid=533123
|Gene=OPRD1
|Chromosome=1
|position=28814643
|Orientation=minus
|GMAF=0.2112
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=OPRD1
}}[[rs533123]] is a SNP in the opioid receptor, delta 1 [[OPRD1]] gene.

A genome-wide association study of 1,000+ European [[anorexia nervosa]] patients (and 3,700+ pediatric controls) concluded that [[rs533123]] was significantly (p = 0.0015) associated with the disorder when analyzed specifically, however the finding did not reach genome-wide significance.{{PMID|21079607|OA=1
}}

{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 0.9 | 26.4 | 72.7
| HCB | 0.0 | 0.7 | 99.3
| JPT | 0.0 | 0.9 | 99.1
| YRI | 28.6 | 54.0 | 17.5
| ASW | 0.0 | 0.0 | 0.0
| CHB | 0.0 | 0.7 | 99.3
| CHD | 0.0 | 0.0 | 0.0
| GIH | 1.0 | 18.8 | 80.2
| LWK | 15.1 | 56.6 | 28.3
| MEX | 0.0 | 21.1 | 78.9
| MKK | 0.0 | 0.0 | 0.0
| TSI | 5.2 | 28.9 | 66.0
| HapMapRevision=28
}}

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