Journal Article

Conditional and interaction gene-set analysis reveals novel functional pathways for blood pressure

Posthuma, Danielle, Dekkers, Ilona A., Stringer, Sven, de Leeuw, Christiaan A., Heskes, Tom

2018

Overview

Gene-set analysis provides insight into which functional and biological properties of genes are aetiologically relevant for a particular phenotype. But genes have multiple properties, and these properties are often correlated across genes. This can cause confounding in a gene-set analysis, because one property may be statistically associated even if biologically irrelevant to the phenotype, by being correlated with gene properties that are relevant. To address this issue we present a novel conditional and interaction gene-set analysis approach, which attains considerable functional refinement of its conclusions compared to traditional gene-set analysis. We applied our approach to blood pressure phenotypes in the UK Biobank data ( N  = 360,243), the results of which we report here. We confirm and further refine several associations with multiple processes involved in heart and blood vessel formation but also identify novel interactions, among others with cardiovascular tissues involved in regulatory pathways of blood pressure homoeostasis. Gene-set analysis (GSA) is widely used to infer functional and biological properties of a gene set. Here, the authors develop a conditional and interaction gene-set analysis approach that can considerably refine results from traditional GSA.

• Publisher: Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
• Subject: 45/43 / 631/114 / 631/208/205 / 692/4019/592/2727 / Biological properties / Blood pressure / Blood Pressure - genetics / Blood vessels / Computational Biology / Computer Simulation / Gene Regulatory Networks - genetics / Genes / Heart / Homeostasis / Humanities and Social Sciences / Humans / Models, Statistical / multidisciplinary / Phenotype / Phenotypes / Science / Science (multidisciplinary)