Gastroenterology

Gastroenterology

Volume 139, Issue 3, September 2010, Pages 763-769
Gastroenterology

Clinical—Alimentary Tract
Morbidity and Mortality Among Older Individuals With Undiagnosed Celiac Disease

https://doi.org/10.1053/j.gastro.2010.05.041Get rights and content

Background & Aims

Outcomes of undiagnosed celiac disease (CD) are unclear. We evaluated the morbidity and mortality of undiagnosed CD in a population-based sample of individuals 50 years of age and older.

Methods

Stored sera from a population-based sample of 16,886 Olmsted County, Minnesota, residents 50 years of age and older were tested for CD based on analysis of tissue transglutaminase and endomysial antibodies. A nested case-control study compared serologically defined subjects with CD with age- and sex-matched, seronegative controls. Medical records were reviewed for comorbid conditions.

Results

We identified 129 (0.8%) subjects with undiagnosed CD in a cohort of 16,847 older adults. A total of 127 undiagnosed cases (49% men; median age, 63.0 y) and 254 matched controls were included in a systematic evaluation for more than 100 potentially coexisting conditions. Subjects with undiagnosed CD had increased rates of osteoporosis and hypothyroidism, as well as lower body mass index and levels of cholesterol and ferritin. Overall survival was not associated with CD status. During a median follow-up period of 10.3 years after serum samples were collected, 20 cases but no controls were diagnosed with CD (15.2% Kaplan–Meier estimate at 10 years).

Conclusions

With the exception of reduced bone health, older adults with undiagnosed CD had limited comorbidity and no increase in mortality compared with controls. Some subjects were diagnosed with CD within a decade of serum collection, indicating that although most cases of undiagnosed CD are clinically silent, some result in symptoms. Undiagnosed CD can confer benefits and liabilities to older individuals.

Section snippets

Setting

Population-based epidemiologic research can be conducted in Olmsted County (2000 population, ∼124,000) because medical care is virtually self-contained within the community and there are relatively few providers.34 The 2 major medical care providers (Mayo Clinic and Olmsted Medical Center) each use a dossier (or unit record) system whereby all medical information for each individual is accumulated in a single life-long record. These clinical data are accessible because Mayo Clinic has

Results

Among subjects whose disease status was unknown, 16,886 Olmsted County, Minnesota, residents age 50 and older who had consented to use of their serum for research were screened for CD. In total, 163 (1.0%) individuals tested positive for tTGA and underwent confirmatory EMA testing, whereas 143 had borderline tTGA levels (2.0–4.0 U/mL) and also were EMA tested. Based on a combined serology status of both the tTGA and EMA result, 39 subjects were considered equivocal and were excluded from

Discussion

Among the principal findings of this study, undiagnosed CD was found to be associated with impaired bone health including an increased rate of osteoporosis and lower bone density scores, but was not associated with increased mortality or the majority of comorbidities and symptoms commonly linked to diagnosed CD.

As found in our study, undiagnosed CD in older adults was not associated with an increased risk of mortality, data that are consistent with a recent study from Europe.33 This is in

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    Conflicts of interest The authors disclose no conflicts.

    Funding This work was supported by research grants R01-DK57892, P01 CA62242, R01-AR30582, and T-32 AI07047 (A.R.-T.) from the National Institutes of Health, U.S. Public Health Service. The project described was supported by grant number 1 UL1 RR024150 from the National Center for Research Resources, a component of the National Institutes of Health, and the National Institutes of Health Roadmap for Medical Research. Its contents are solely the responsibility of the authors and do not necessarily represent the official view of the National Center for Research Resources or the National Institutes of Health. Information on the National Center for Research Resources is available at http://www.ncrr.nih.gov/. Information on Reengineering the Clinical Research Enterprise can be obtained from http://nihroadmap.nih.gov.

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