NCIt definition : Human TBX21 wild-type allele is located in the vicinity of 17q21.32 and is approximately
13 kb in length. This allele, which encodes T-box transcription factor TBX21 protein,
plays a role in the transcriptional regulation of interferon-gamma. Genetic variation
is associated with susceptibility to asthma with nasal polyps and aspirin intolerance.;