{{Rsnum
|rsid=12720461
|Gene=CYP1A2
|Chromosome=15
|position=74749010
|Orientation=plus
|GMAF=0.0009183
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=CYP1A2
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 100.0 | 0.0 | 0.0
| HCB | 97.7 | 0.0 | 2.3
| JPT | 100.0 | 0.0 | 0.0
| YRI | 100.0 | 0.0 | 0.0
| ASW | 0.0 | 0.0 | 0.0
| CHB | 97.7 | 0.0 | 2.3
| CHD | 0.0 | 0.0 | 0.0
| GIH | 99.0 | 1.0 | 0.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 0.0 | 0.0
| MKK | 99.4 | 0.6 | 0.0
| TSI | 97.1 | 2.9 | 0.0
| HapMapRevision=28
}}
[[rs12720461]] is a SNP in the [[CYP1A2]] gene.

The [[rs12720461]](T) allele defines the CYP1A2*1K_-729C>T variant.

{{PharmGKB
|RSID=rs12720461
|Name_s=CYP1A2:(-)729C>T; CYP1A2:(-)730T>G; part of CYP1A2*K
|Gene_s=CYP1A2
|Feature=Intron
|Evidence=PubMed ID:12920202
|Annotation=Likely disrupts transcription factor binding, leading to reduced function.
|Drugs=
|Drug Classes=
|Diseases=
|Curation Level=Curated
|PharmGKB Accession ID=PA161145042
}}

{{PMID Auto
|PMID=20389299
|Title=Pazopanib-induced hyperbilirubinemia is associated with Gilbert's syndrome UGT1A1 polymorphism.
|OA=1
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | FTDNA2}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}