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Blood-derived gene-expression profiling in unravelling susceptibility to recessive disease.


ABSTRACT: Identification of new disease predisposition genes with chip-based technologies typically requires extensive financial and sample resources. We have recently shown that combining peripheral blood genome and transcriptome (BGT) information in highly selected materials can be a successful low-cost approach to unravelling dominant tumour susceptibility. In this study, we extended our investigations to recessively inherited tumour predisposition, and identified a homozygous germline mutation in the damage-specific DNA binding protein 2 (DDB2) gene in a patient with several facial tumours, for which doctors had been unable to provide a diagnosis. Our results provide proof of principle that BGT is a powerful approach for both dominant and recessive genes. In addition to tumour susceptibility, the method may be useful in characterising genetic defects underlying other disease phenotypes.

SUBMITTER: Vahteristo P 

PROVIDER: S-EPMC2752178 | biostudies-literature | 2007 Nov

REPOSITORIES: biostudies-literature

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Blood-derived gene-expression profiling in unravelling susceptibility to recessive disease.

Vahteristo P P   Kokko A A   Saksela O O   Aittomäki K K   Aaltonen L A LA  

Journal of medical genetics 20070727 11


Identification of new disease predisposition genes with chip-based technologies typically requires extensive financial and sample resources. We have recently shown that combining peripheral blood genome and transcriptome (BGT) information in highly selected materials can be a successful low-cost approach to unravelling dominant tumour susceptibility. In this study, we extended our investigations to recessively inherited tumour predisposition, and identified a homozygous germline mutation in the  ...[more]

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