title: Association of rare haplotypes onULK4andMAP4genes with hypertension.
abstract: Several variants have been implicated earlier onULK4andMAP4genes on chromosome 3 to be associated with hypertension. As a natural follow-up step, we explore association of haplotypes in those genes. We consider the Genetic Analysis Workshop 19 real data on unrelated individuals and analyze haplotype blocks of 5 single-nucleotide polymorphisms through a sliding window approach. We apply 4 haplotype association methods-haplo.score, haplo.glm, hapassoc, and logistic Bayesian LASSO (LBL)-and for comparison, sequence kernel association test (SKAT) and its variants. We find several rare haplotype blocks to be associated. To get an idea about the false-positive proportions, we also analyzed the data after permuting the case-control status of individuals. We found that LBL, unlike the other methods, maintains low false-positive rates in presence of rare haplotypes. Thus, we conclude that the haplotypes found to be associated by LBL are more likely to be true positive. SKAT and its variants did not find significance on either gene.
authors.affiliation: Department of Mathematical Sciences, University of Texas at Dallas, Richardson, TX USA.
authors.forename: Ananda S
authors.initials: AS
authors.lastname: Datta
authors.affiliation: Department of Mathematical Sciences, University of Texas at Dallas, Richardson, TX USA.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Mathematical Sciences, University of Texas at Dallas, Richardson, TX USA.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Mathematical Sciences, University of Texas at Dallas, Richardson, TX USA.
authors.forename: Swati
authors.initials: S
authors.lastname: Biswas