{{Rsnum
|rsid=423904
|Gene=IL1RN
|Chromosome=2
|position=113129685
|Orientation=plus
|GMAF=0.1846
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=IL1RN
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 46.9 | 46.9 | 6.2
| HCB | 84.7 | 15.3 | 0.0
| JPT | 85.8 | 14.2 | 0.0
| YRI | 95.9 | 4.1 | 0.0
| ASW | 87.7 | 12.3 | 0.0
| CHB | 84.7 | 15.3 | 0.0
| CHD | 83.5 | 13.8 | 2.8
| GIH | 40.6 | 42.6 | 16.8
| LWK | 92.7 | 7.3 | 0.0
| MEX | 36.2 | 53.4 | 10.3
| MKK | 91.7 | 8.3 | 0.0
| TSI | 46.1 | 51.0 | 2.9
| HapMapRevision=28
}}{{Report GE
|PubMed=9771403
|Source=Cytokine DB
|AffyProbeset=SNP_A-4245286
|AffyOrientation=same
|AlleleA=C
|AlleleB=T
|onGW5=1
|rsid=423904
|ancestral=C
|RiskPopulation=Netherlands
|RiskAllele=T
|CaseFreq=
|ControlFreq=
|OddsRatioHet=
|OddsRatioHom=
|OddsRatioAll=2.60
|Disease=Ulcerative colitis
|DiseaseSymbol=UC
|OA=1
}}

{{ neighbor
| rsid = 419598
| distance = 55
}}

rs423904 increases susceptibility to Ulcerative colitis 2.60 times for carriers of the T allele {{PMID|9771403|OA=1
}}

{{PMID Auto
|PMID=19043479
|Title=Association of -31T>C and -511 C>T polymorphisms in the interleukin 1 beta (IL1B) promoter in Korean keratoconus patients.
|OA=1
}}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | Affy500k}}
{{on chip | FTDNA2}}
{{on chip | FTDNA}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}