{{Rsnum
|rsid=55785340
|Gene=CYP3A4
|Chromosome=7
|position=99768360
|Orientation=plus
|ReferenceAllele=T
|MissenseAllele=C
|GMAF=0.0009183
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(G;G)
|geno2=(A;G)
|geno3=(A;A)
|Gene_s=CYP3A4
}}[[rs55785340]], also known as 664T>C, 15713T>C or S222P, is a SNP in the [[CYP3A4]] gene.

The [[rs55785340]](G) allele defines the CYP3A4*2 variant.

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}