{{Rsnum
|rsid=2470890
|Gene=CYP1A2
|Chromosome=15
|position=74755085
|Orientation=plus
|ReferenceAllele=C
|GMAF=0.3186
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 12.5 | 42.9 | 44.6
| HCB | 70.8 | 26.3 | 2.9
| JPT | 61.1 | 34.5 | 4.4
| YRI | 100.0 | 0.0 | 0.0
| ASW | 73.7 | 26.3 | 0.0
| CHB | 70.8 | 26.3 | 2.9
| CHD | 71.7 | 27.4 | 0.9
| GIH | 76.2 | 21.8 | 2.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 51.7 | 36.2 | 12.1
| MKK | 60.3 | 34.6 | 5.1
| TSI | 25.5 | 46.1 | 28.4
| HapMapRevision=28
}}[[rs2470890]] is a SNP in the [[CYP1A2]] gene.

The [[rs2470890]](C) allele defines the CYP1A2_1545T>C variant.

{{PharmGKB
|RSID=rs2470890
|Name_s=CYP1A2:Asn516Asn; CYP1A2:1545T>C; CYP1A2:1548T>C; CYP1A2:Ex7(+)295T>C
|Gene_s=CYP1A2
|Feature=
|Evidence=PubMed ID:16969362
|Annotation=Weakly associated with tardive dyskinesia and schizophrenia.
|Drugs=
|Drug Classes=
|Diseases=
|Curation Level=Curated
|PharmGKB Accession ID=PA161145044
}}

{{PharmGKB
|RSID=rs2470890
|Name_s=CYP1A2:5347T>C; CYP1A2*1B
|Gene_s=CYP1A2
|Feature=
|Evidence=PubMed ID:12534642; PubMed ID:16153396
|Annotation=Common SNP, part of CYP1A2*1B.
|Drugs=
|Drug Classes=
|Diseases=
|Curation Level=Curated
|PharmGKB Accession ID=PA161145046
}}

{{PMID Auto
|PMID=21281405
|Title=Coffee, ADORA2A, and CYP1A2: the caffeine connection in Parkinson's disease
|OA=1
}}

{{PMID|18992148|OA=1
}} Low-penetrance alleles predisposing to sporadic colorectal cancers: a French case-controlled genetic association study.

{{GET Evidence
|impact=pharmacogenetic
|qualified_impact=Insufficiently evaluated pharmacogenetic
|inheritance=unknown
|quality_scores=Array
|dbsnp_id=rs2470890
|overall_frequency_n=5073
|overall_frequency_d=10758
|overall_frequency=0.471556
|n_genomes=19
|n_genomes_annotated=0
|n_haplomes=28
|n_articles=0
|n_articles_annotated=0
|in_pharmgkb=Y
|autoscore=1
|webscore=N
}}

{{PMID Auto
|PMID=25081684
|Title=Four Polymorphisms in the Cytochrome P450 1A2 (CYP1A2) Gene and Lung Cancer Risk: a Meta-analysis
}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}