{{Rsnum
|rsid=9910408
|Gene=TBX21
|Chromosome=17
|position=47725508
|Orientation=plus
|GMAF=0.3632
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 30.1 | 48.7 | 21.2
| HCB | 40.9 | 47.4 | 11.7
| JPT | 54.9 | 38.1 | 7.1
| YRI | 54.4 | 35.4 | 10.2
| ASW | 40.4 | 45.6 | 14.0
| CHB | 40.9 | 47.4 | 11.7
| CHD | 55.0 | 37.6 | 7.3
| GIH | 36.6 | 48.5 | 14.9
| LWK | 50.0 | 45.5 | 4.5
| MEX | 32.8 | 48.3 | 19.0
| MKK | 43.9 | 48.4 | 7.7
| TSI | 31.4 | 41.2 | 27.5
| HapMapRevision=28
}}Approximately 600 Caucasian families with or without adults and children with [[asthma]] were genotyped for several [[TBX21]] SNPs and also screened for signs of airway hyperresponsiveness[[rs9910408(A;A)]] and [[rs9910408(A;G)]] carriers were seen to be more sensitive than [[rs9910408(G:G)]] homozygotes among children, and possibly adults. {{PMID|16179640|OA=1
}}

{{PMID Auto
|PMID=24107858
|Title=Asthma treatment outcome in adults is associated with rs9910408 in TBX21 gene
|OA=1
}}

{{on chip | FTDNA2}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}