The search terms used were "Transient Receptor Potential Channels", "TRP channels", "TRPV1", "TRPA1", "TRPV4", "TRPV2", "TRPM2", "TRPM3", "TRPM7", "TRPM8", "TRPC3", "colitis", "inflammatory bowel disease", "IBD", "ulcerative colitis", "Crohn Disease". Here, TRPM8 is linked to Crohn disease.