CARD4/NOD1 is not involved in inflammatory bowel disease.

Zouali H, Lesage S, Merlin F, Cezard JP, Colombel JF, Belaiche J, Almer S, Tysk C, O’Morain C, Gassull M, Christensen S, Finkel Y, Modigliani R, Gower-Rousseau C, Macry J, Chamaillard M, Thomas G, Hugot JP; EPWG group.; EPIMAD group. (Gut 2003 Jan;52(1):71-4.)

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=12477763&query_hl=17&itool=pubmed_docsum