Celiac Disease Related to Autoimmune Disorders
Given the consistent findings associating celiac disease with certain autoimmune disorders, and the safety and effectiveness of the gluten-free diet that is used to treat celiac disease, screening deserves consideration in these patients, she concluded.
Dr. Adams serves as a speaker for Abbott Pharmaceuticals. She had no other relevant disclosures.
Systemic Link Needs Further Study
An association between celiac disease and systemic autoimmune disease has been reported, but is less established than the association between celiac disease and nonsystemic autoimmune disorders, Dr. Adams said.
Reports of a link between celiac disease and systemic lupus erythematosus (SLE), for example, are limited to case reports, and at this point should be “taken with a grain of salt,” she said.
However, it does appear that in children the celiac disease diagnosis typically precedes the SLE diagnosis, whereas the converse is true in adults.
Also, reports of SLE following celiac disease despite histologic normalization of the celiac disease on biopsy suggest that the treatment of celiac disease via a gluten-free diet does not modify the disease course in SLE, as it appears to do in cases of arthritis and myositis (J. Clin. Gastroenterol. 2008;42:252–5), Dr. Adams said.
There does, however, appear to be a fairly strong association between celiac disease and Sjögren's syndrome.
A 2003 report said Sjögren's syndrome is present in up to 15% of patients with biopsy-proven celiac disease, and demonstrated that anti-tTG (tissue transglutaminase, a marker for celiac disease) is more prevalent in Sjögren's syndrome than in other systemic rheumatic diseases (J. Rheumatol. 2003;30:2613–9).
Systemic sclerosis and morphia have also been reported in association with celiac disease, Dr. Adams said.
The strongest associations between celiac disease and systemic autoimmune disease are with adult idiopathic diabetes mellitus, autoimmune thyroid disease, Addison's disease, and polyendocrinopathies, she added.
More data are needed to define the prevalence of celiac disease in various subtypes of systemic autoimmune disease, she concluded.
