Journal
AMERICAN JOURNAL OF HUMAN GENETICS
Volume 73, Issue 3, Pages 652-655Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/378100
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- NCI NIH HHS [1R01 CA-81203] Funding Source: Medline
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In many disease genes, a substantial fraction of all rare variants detected cannot yet be used for genetic counselling because of uncertainty about their association with disease. One approach to the characterization of these unclassified variants is the analysis of patterns of cosegregation with disease in affected carrier families. Petersen et al. previously provided a simplistic Bayesian method for evaluation of causality of such sequence variants. In the present report, we propose a more general method based on the full pedigree likelihood, and we show that the use of this method can provide more accurate and informative assessment of causality than could the previous method. We further show that it is important that the pedigree information be as complete as possible and that the distinction be made between unaffected individuals and those of unknown phenotype.
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