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J Clin Gastroenterol. 2013 Sep;47(8):678-83. doi: 10.1097/MCG.0b013e318284792e.

Increased risk of IgA nephropathy among individuals with celiac disease.

Author information

1
Department of Medicine, Karolinska University Hospital, Stockholm, Sweden. adina.welander@ki.se

Abstract

GOAL:

To determine the risk of future biopsy-verified IgA nephropathy (IgAN) among individuals with biopsy-verified celiac disease (CD).

BACKGROUND:

Individuals with CD suffer increased risk of end-stage renal disease. An association between CD and IgAN has been suggested; however, results have been inconclusive and no previous study has considered the risk of IgAN in biopsy-verified CD.

STUDY:

We performed a population-based prospective cohort study. We identified 27,160 individuals with CD (Marsh stage III) and no previous renal disease through small-intestinal biopsy reports obtained between July 1969 and February 2008 in all (n=28) Swedish pathology departments. Individuals with IgAN were identified by biopsy reports acquired at the 4 Swedish pathology departments specialized in renal pathology. Cox regression analysis was used to determine the risk of future IgAN among individuals with CD compared with 133,949 age-matched and sex-matched reference individuals.

RESULTS:

Seven (0.026%) individuals with CD and 11 (0.008%) reference individuals developed IgAN. We found an increased risk of biopsy-verified IgAN among individuals with CD [hazard ratio, 3.03; 95% confidence interval, 1.22-7.56]. The risk increase remained statistically significant after adjustment for prior liver disease and country of birth.

CONCLUSIONS:

Individuals with CD suffer a 3-fold increased risk of future IgAN. Our findings warrant awareness of renal function in individuals with CD.

PMID:
23442839
DOI:
10.1097/MCG.0b013e318284792e
[Indexed for MEDLINE]

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