Rs4794067

rs4794067(C;C) and rs4794067(C;T) genotypes for the TBX21 gene are calculated to be at 2.15 fold higher risk (CI: 1.26-3.64) for aspirin-induced asthma (AIA) compared to rs4794067(T;T) homozygotes, based on a study of 72 patients vs 640 controls in a study of a Japanese population.

Note that in this population, but perhaps not others, linkage disequilibrium exists between this SNP located upstream of the gene, rs4794067, and a common synonymous SNP located in the first exon, rs2074190, with a predictive accuracy of 92%.

On the other hand, rs4794067(C;C) may greatly decrease the risk of lupus if rs17250932(C;C) is also present (at least in Chinese people). And those 2 SNPs also reduce the risk of intractable Graves' disease (at least in Japanese people).