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AIMS: Autoimmune disorders co-exist in the same individuals and in families, implying a shared aetiology. The aim of this study was to compare the prevalence of the common autoimmune diseases in the parents of siblings from the Type 1 diabetes Warren repository with the general population. METHODS: Between 1989 and 1996, 505 British families with at least two siblings affected by Type 1 diabetes were recruited. Clinical information was collected regarding the presence of autoimmune disease in the parents and the prevalence of disease in the parents was compared with that expected in the general population. RESULTS: The prevalence of autoimmune disease in the parents was significantly higher in the repository compared with that expected in the general population [P-value = 1.98 x 10(-5) (female), P-value = 1.1 x 10(-8) (male)]. Type 1 diabetes was recorded in 63/1010 (6.2%) parents with a marked paternal preponderance (9.5 vs. 3%P = 0.002). Other autoimmune diseases affected 27% of parents with diabetes and 13.2% of parents without diabetes (P < 0.01). CONCLUSION: These data confirm the importance of family history as a significant risk factor for the development of Type 1 diabetes and support the hypothesis that the common autoimmune diseases share at least some aetiological mechanisms.

Original publication

DOI

10.1111/j.1464-5491.2004.01162.x

Type

Journal article

Journal

Diabet Med

Publication Date

04/2004

Volume

21

Pages

358 - 362

Keywords

Adult, Aged, Arthritis, Rheumatoid, Autoimmune Diseases, Cluster Analysis, Diabetes Mellitus, Type 1, Fathers, Female, Humans, Male, Middle Aged, Mothers, Parents, Prevalence, Sex Distribution, Siblings, Thyroid Diseases, United Kingdom