{{Rsnum
|rsid = 915947
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Chromosome=22
|Orientation=plus
|Gene=CYP2D6
|position=42523241
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
}}a variation in [[CYP2D6]]