Additional Genes Linked to Crohn's - IL23R and 30 Others

Saw two posts on an About.com IBD blog (post one, post two) about new studies that found several genes that could be linked to Crohn's Disease. The first study pointed to the IL23R gene. The second study pointed to over 30 possible genes. It's seems to be unclear at this point how these genes are expressed in the body to contribute to the disease, but I assume that's the next step.