國家衛生研究院 NHRI:Item 3990099045/1746
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    題名: Incorporating endophenotypes into allele-sharing based linkage tests
    作者: Wang, WC;Chang, IS;Chang, CH;Curb, D;Ho, LT;Hsiung, CA
    貢獻者: Division of Biostatistics and Bioinformatics;National Institute of Cancer Research
    摘要: For a genetic study in which there are concordant and discordant sibpairs for a complex disease trait and the measurements of other endophenotypes/intermediate phenotypes for each of the individuals are also available, we describe an allele-sharing based multipoint linkage test that utilizes nonparametrically the additional endophenotypes/intermediate phenotypes. The usefulness of this method is evaluated in simulation studies, which show that the gain in power is influenced by not only the endophenotypic value but also the correlation between the diagnosis-based phenotype and the endophenotype. In addition to reporting p values, our method also provides an index C-E,C- derived from the coefficients of the weight function associated with the endophenotype in the proposed statistic, to indicate the relevance of a specific endophenotype/intermediate phenotype in the genetic study. The simulation study indicates that a larger power, in general, corresponds to a larger value of the index C-E. The index C-E is thus suggested as a quantity to be used in the choice of endophenotypes in linkage study. Data from the Stanford Asian Pacific Program in Hypertension and Insulin Resistance (SAPPHIRe) are used to illustrate the method.
    關鍵詞: Genetics & Heredity;Public, Environmental & Occupational Health
    日期: 2006-02
    關聯: Genetic Epidemiology. 2006 Feb;30(2):133-142.
    Link to: http://dx.doi.org/10.1002/gepi.20133
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0741-0395&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000235124800004
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=32044456987
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