Modeling linkage disequilibrium increases accuracy of polygenic risk scores

BJ Vilhjálmsson, J Yang, HK Finucane, A Gusev… - The american journal of …, 2015 - cell.com
Polygenic risk scores have shown great promise in predicting complex disease risk and will
become more accurate as training sample sizes increase. The standard approach for …

Genetic variance estimation with imputed variants finds negligible missing heritability for human height and body mass index

J Yang, A Bakshi, Z Zhu, G Hemani, AAE Vinkhuyzen… - Nature …, 2015 - nature.com
We propose a method (GREML-LDMS) to estimate heritability for human complex traits in
unrelated individuals using whole-genome sequencing data. We demonstrate using …

Contrasting genetic architectures of schizophrenia and other complex diseases using fast variance-components analysis

PR Loh, G Bhatia, A Gusev, HK Finucane… - Nature …, 2015 - nature.com
Heritability analyses of genome-wide association study (GWAS) cohorts have yielded
important insights into complex disease architecture, and increasing sample sizes hold the …

Efficient set tests for the genetic analysis of correlated traits

FP Casale, B Rakitsch, C Lippert, O Stegle - Nature methods, 2015 - nature.com
Set tests are a powerful approach for genome-wide association testing between groups of
genetic variants and quantitative traits. We describe mtSet (http://github. com/PMBio/limix), a …

Strategies for imputing and analyzing rare variants in association studies

TJ Hoffmann, JS Witte - Trends in Genetics, 2015 - cell.com
Rare genetic variants may be responsible for a significant amount of the uncharacterized
genetic risk underlying many diseases. An efficient approach to characterizing the disease …

Mixed model with correction for case-control ascertainment increases association power

TJ Hayeck, NA Zaitlen, PR Loh, B Vilhjalmsson… - The American Journal of …, 2015 - cell.com
We introduce a liability-threshold mixed linear model (LTMLM) association statistic for case-
control studies and show that it has a well-controlled false-positive rate and more power …

A new tool called DISSECT for analysing large genomic data sets using a Big Data approach

O Canela-Xandri, A Law, A Gray, JA Woolliams… - Nature …, 2015 - nature.com
Large-scale genetic and genomic data are increasingly available and the major bottleneck
in their analysis is a lack of sufficiently scalable computational tools. To address this problem …

Two-variance-component model improves genetic prediction in family datasets

G Tucker, PR Loh, IM MacLeod, BJ Hayes… - The American Journal of …, 2015 - cell.com
Genetic prediction based on either identity by state (IBS) sharing or pedigree information
has been investigated extensively with best linear unbiased prediction (BLUP) methods …

Phenotypic variance explained by local ancestry in admixed African Americans

D Shriner, AR Bentley, AP Doumatey, G Chen… - Frontiers in …, 2015 - frontiersin.org
We surveyed 26 quantitative traits and disease outcomes to understand the proportion of
phenotypic variance explained by local ancestry in admixed African Americans. After …

Fast principal components analysis reveals independent evolution of ADH1B gene in Europe and East Asia

KJ Galinsky, G Bhatia, PR Loh, S Georgiev… - BioRxiv, 2015 - biorxiv.org
Searching for genetic variants with unusual differentiation between subpopulations is an
established approach for identifying signals of natural selection. However, existing methods …