Table 3.

Transmission disequilibrium test (TDT) analyses performed in 381 inflammatory bowel disease (IBD) families. Analyses were performed for the ulcerative colitis (UC), Crohn’s disease (CD), and IBD (UC, CD, and indeterminate colitis (IC)) phenotypes where appropriate

A allele*	Transmitted	Untransmitted	p Value
All IBD families (n=381)
IBD phenotype	137	151	0.40
CD phenotype	102	106	0.78
UC phenotype	25	37	0.12
Pure CD families (n=235)
CD phenotype	85	87	0.87
Pure UC families (n=58)
UC phenotype	19	21	0.75

*The A allele of the G796A polymorphism corresponds to the K allele of the E266K variation observed at the protein level.