{{Rsnum
|rsid=28940303
|Gene=VKORC1P1
|Orientation=minus
|ReferenceAllele=T
|MissenseAllele=C
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Chromosome=16
|position=31094596
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|Status=Merged
|Merged=104894540
|Gene_s=VKORC1
}}influences [[warfarin]] dose
{{omim
| id = 608547
| variant = 0003
| desc    = WARFARIN RESISTANCE
| rsnum   = 28940303
}}
{{ neighbor
| rsid = 28940302
| distance = 49
}}

{{ neighbor
| rsid = 28940304
| distance = 38
}}

{{PharmGKB
|RSID=rs28940303
|Name_s=VKORC1:V45A; Val45Ala
|Gene_s=VKORC1
|Feature=
|Evidence=PubMed ID:14765194; PubMed ID:18234404
|Annotation=This rare (<0.1%) missense mutation in VKORC1 gene confers severe warfarin resistance phenotype. Individuals carrying this mutation require higher dose of warfarin (Target INR never reached).
|Drugs=warfarin
|Drug Classes=
|Diseases=
|Curation Level=Curated
|PharmGKB Accession ID=PA162360181
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}