lunes, 21 de mayo de 2012

Assessing Disease Risk in Genome-wide Associati... [Epidemiology. 2012] - PubMed - NCBI

Assessing Disease Risk in Genome-wide Associati... [Epidemiology. 2012] - PubMed - NCBI

Epidemiology. 2012 May 9. [Epub ahead of print]

Assessing Disease Risk in Genome-wide Association Studies Using Family History.


From the Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD.


We show how to use reports of cancer in family members to discover additional genetic associations or confirm previous findings in genome-wide association (GWA) studies conducted in case-control, cohort, or cross-sectional studies. Our novel family history-based approach allows economical association studies for multiple cancers, without genotyping of relatives (as required in family studies), follow-up of participants (as required in cohort studies), or oversampling of specific cancer cases (as required in case-control studies). We empirically evaluate the performance of the proposed family history-based approach in studying associations with prostate and ovarian cancers, using data from GWA studies previously conducted within the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial. The family history-based method may be particularly useful for investigating genetic susceptibility to rare diseases for which accruing cases may be very difficult, by using disease information from nongenotyped relatives of participants in multiple case-control and cohort studies designed primarily for other purposes.
[PubMed - as supplied by publisher]

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