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Parameters for reliable results in genetic association studies in common disease

Abstract

It is increasingly apparent that the identification of true genetic associations in common multifactorial disease will require studies comprising thousands rather than the hundreds of individuals employed to date. Using 2,873 families, we were unable to confirm a recently published association of the interleukin 12B gene in 422 type I diabetic families. These results emphasize the need for large datasets, small P values and independent replication if results are to be reliable.

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Figure 1: Expression of IL12B mRNA in B lymphoblastoid cell lines according to the IL12B 3′ UTR SNP genotype.

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Acknowledgements

We thank the Juvenile Diabetes Research Foundation, the Wellcome Trust and the National Institutes of Health for support, and the HBDI and Diabetes UK for family collections. J.T. and E.T.-W. were funded by the NIH, the Novo Nordisk Foundation, the Sigrid Juselius Foundation, the Academy of Finland and the Juvenile Diabetes Research Foundation.

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Correspondence to John A. Todd.

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Dahlman, I., Eaves, I., Kosoy, R. et al. Parameters for reliable results in genetic association studies in common disease. Nat Genet 30, 149–150 (2002). https://doi.org/10.1038/ng825

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