{{Rsnum
|rsid = 77952980
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Chromosome=22
|Orientation=plus
|Gene=CYP2D6
|position=42524154
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|Gene_s=CYP2D6
}}a variation in [[CYP2D6]]