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Linkage and the Transmission Disequilibrium Test in Complex Traits

Celiac Disease as a Case Study

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Part of the book series: Methods in Molecular Medicine ((MIMM,volume 41))

Abstract

Many disorders such as celiac disease do not conform to a simple Mendelian model of inheritance and display a complex pattern of inheritance indicative of the interaction of a number of distinct susceptibility genes. Susceptibility to celiac disease is genetically determined by possession of specific HLA DQ alleles, acting in concert with one or more non-HLA-linked genes. Haplotypesharing probabilities across the HLA region in affected sibling pairs suggest that genes within the major histocompatibility complex (MHC) contribute no more than 30% of the sibling familial risk of celiac disease, making the non-HLA-linked gene (or genes) the stronger determinant of celiac disease susceptibility (1). Locating these non-HLA-linked genes can be undertaken by either linkage or association. The relative merits of these two approaches depend critically on the frequency and genotypic risks associated with susceptibility genes.

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© 2000 Humana Press Inc., Totowa, NJ

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Bevan, S., Houlston, R.S. (2000). Linkage and the Transmission Disequilibrium Test in Complex Traits. In: Marsh, M.N. (eds) Celiac Disease. Methods in Molecular Medicine, vol 41. Humana Press. https://doi.org/10.1385/1-59259-082-9:033

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  • DOI: https://doi.org/10.1385/1-59259-082-9:033

  • Publisher Name: Humana Press

  • Print ISBN: 978-0-89603-650-5

  • Online ISBN: 978-1-59259-082-7

  • eBook Packages: Springer Protocols

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