Abstract

Patients with inflammatory bowel disease have increased risk of autoimmune and inflammatory diseases

Halling ML1, Kjeldsen J2, Knudsen T3, Nielsen J4, Hansen LK2. World J Gastroenterol. 2017 Sep 7;23(33):6137-6146. doi: 10.3748/wjg.v23.i33.6137.
 
     
Author information

1 Department of Gastroenterology and Hepatology, Hospital of Southwest Jutland, 6700 Esbjerg, Denmark. mortenhalling@gmail.com. 2 Department of Medical Gastroenterology S, Odense University Hospital, 5000 Odense, Denmark. 3 Department of Gastroenterology and Hepatology, Hospital of Southwest Jutland, 6700 Esbjerg, Denmark. 4 Center for Clinical Epidemiology, Odense University Hospital, 5000 Odense, Denmark.

Abstract

AIM: To investigate whether immune mediated diseases (IMD) are more frequent in patients with inflammatorybowel disease (IBD).

METHODS: In this population based registry study, a total of 47325 patients with IBD were alive and registered in the Danish National Patient Registry on December 16, 2013. Controls were randomly selected from the Danish Civil Registration System (CRS) and matched for sex, age, and municipality. We used ICD 10 codes to identify the diagnoses of the included patients. The IBD population was divided into three subgroups: Ulcerative colitis (UC), Crohn's disease (CD) and Both the latter referring to those registered with both diagnoses. Subsequently, odds-ratios (OR) and 95%CI were obtained separately for each group and their respective controls. The use of Bonferoni post-test correction adjusted the significance level to P < 0.00125. P-values were estimated using Fisher's exact test.

RESULTS: There were significantly more women than men in the registry, and a greater percentage of comorbidity in the IBD groups (P < 0.05). Twenty different IMDs were all significantly more frequent in the IBD group. Sixteen were associated with UC versus twelve with CD. In both UC and CD ORs were significantly increased (P < 0.00125) for primary sclerosing cholangitis (PSC), celiac disease, type 1 diabetes (T1D), sarcoidosis, asthma, iridocyclitis, psoriasis, pyoderma gangrenosum, rheumatoid arthritis, and ankylosing spondylitis. Restricted to UC (P < 0.00125) were autoimmune hepatitis, primary biliary cholangitis, Grave's disease, polymyalgia rheumatica, temporal arteritis , and atrophic gastritis. Restricted to CD (P < 0.00125) were psoriatic arthritis and episcleritis. Restricted to women with UC (P < 0.00125) were atrophic gastritis, rheumatoid arthritis, temporal arteritis, and polymyalgia rheumatica. Restricted to women with CD were episcleritis, rheumatoid arthritis, and psoriatic arthritis. The only disease restricted to men (P < 0.00125) was sarcoidosis.

CONCLUSION: Immune mediated diseases were significantly more frequent in patients with IBD. Our results strengthen the hypothesis that some IMDs and IBD may have overlapping pathogenic pathways.

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