Mixed-effects models for joint modeling of sequence data in longitudinal studies.

ABSTRACT: In this paper, we propose a novel mixed-effects model for longitudinal changes of systolic blood pressure (SBP) over time that can estimate the joint effect of multiple sequence variants on SBP after accounting for familial correlation and the time dependencies within individuals. First we carried out agenome-wide association study (GWAS) using chromosome 3 single-nucleotide polymorphisms(SNPs) to identify regions associated with SBP levels. In a second step, we examined the sequence data to fine-map additional variants in these regions. Four SNPs from two intergenic regions (PLXNA1-TPRA1, BPESC1-PISTR1) and one gene (NLGN1) were detected to be significantly associated with SBP after adjusting for multiple testing. These SNPs were used to capture the multilocus genotype diversity in the re

SUBMITTER: Wu YY 

PROVIDER: S-EPMC4143749 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature