Open Access
Translator Disclaimer
September 2011 Generalized genetic association study with samples of related individuals
Zeny Feng, William W. L. Wong, Xin Gao, Flavio Schenkel
Ann. Appl. Stat. 5(3): 2109-2130 (September 2011). DOI: 10.1214/11-AOAS465


Genetic association study is an essential step to discover genetic factors that are associated with a complex trait of interest. In this paper we present a novel generalized quasi-likelihood score (GQLS) test that is suitable for a study with either a quantitative trait or a binary trait. We use a logistic regression model to link the phenotypic value of the trait to the distribution of allelic frequencies. In our model, the allele frequencies are treated as a response and the trait is treated as a covariate that allows us to leave the distribution of the trait values unspecified. Simulation studies indicate that our method is generally more powerful in comparison with the family-based association test (FBAT) and controls the type I error at the desired levels. We apply our method to analyze data on Holstein cattle for an estimated breeding value phenotype, and to analyze data from the Collaborative Study of the Genetics of Alcoholism for alcohol dependence. The results show a good portion of significant SNPs and regions consistent with previous reports in the literature, and also reveal new significant SNPs and regions that are associated with the complex trait of interest.


Download Citation

Zeny Feng. William W. L. Wong. Xin Gao. Flavio Schenkel. "Generalized genetic association study with samples of related individuals." Ann. Appl. Stat. 5 (3) 2109 - 2130, September 2011.


Published: September 2011
First available in Project Euclid: 13 October 2011

zbMATH: 1228.62140
MathSciNet: MR2884933
Digital Object Identifier: 10.1214/11-AOAS465

Rights: Copyright © 2011 Institute of Mathematical Statistics


Vol.5 • No. 3 • September 2011
Back to Top