Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Familial IBD and association with extraintestinal manifestations
| Total | First degree relative | Second degree relative | |
| Ulcerative colitis | 24/619 | 18 (14 UC + 4 CD) | 6 (5 UC + 1 CD) |
| (3.9%) | (2.9%) | (1.0%) | |
| Crohn’s disease | 31/254 | 20 (3 UC + 17 CD) | 11 (2 UC + 9 CD) |
| (12.2%) | (7.9%) | (4.3%) |
