{{Rsnum
|rsid=334348
|Gene=TGFBR1
|Chromosome=9
|position=99150189
|Orientation=plus
|GMAF=0.3421
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Gene_s=TGFBR1
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 57.5 | 38.1 | 4.4
| HCB | 29.2 | 43.8 | 27.0
| JPT | 23.9 | 53.1 | 23.0
| YRI | 50.3 | 43.5 | 6.1
| ASW | 42.1 | 49.1 | 8.8
| CHB | 29.2 | 43.8 | 27.0
| CHD | 28.4 | 56.0 | 15.6
| GIH | 39.6 | 48.5 | 11.9
| LWK | 49.1 | 36.4 | 14.5
| MEX | 51.7 | 43.1 | 5.2
| MKK | 42.3 | 42.3 | 15.4
| TSI | 51.0 | 43.1 | 5.9
| HapMapRevision=28
}}

{{doi|10.1126|science.1159397}} appears relevant to [[colon cancer]] [[rs334348]], [[rs334349]] and [[rs1590]] (in total linkage disequilibrium with each other) and a fourth marker, [[rs7871490]]

{{PMID Auto
|PMID=20332227
|Title=Single-Nucleotide Polymorphisms Inside MicroRNA Target Sites Influence Tumor Susceptibility
|OA=1
}}

{{PMID Auto
|PMID=18703712
|Title=Germline allele-specific expression of TGFBR1 confers an increased risk of colorectal cancer.
|OA=1
}}

{{PMID Auto
|PMID=19509225
|Title=Infrequent detection of germline allele-specific expression of TGFBR1 in lymphoblasts and tissues of colon cancer patients.
|OA=1
}}

{{PMID Auto
|PMID=20500843
|Title=Constitutively decreased TGFBR1 allelic expression is a common finding in colorectal cancer and is associated with three TGFBR1 SNPs.
|OA=1
}}

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