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Gene expression microarray technologies provide the simultaneous measurements of a large number of genes. Typical analyses of such data focus on the individual genes, but recent work has demonstrated that evaluating changes in expression…

应用统计 · 统计学 2010-06-29 Babak Shahbaba , Robert Tibshirani , Catherine M. Shachaf , Sylvia K. Plevritis

The study of expression Quantitative Trait Loci (eQTL) is an important problem in genomics and biomedicine. While detection (testing) of eQTL associations has been widely studied, less work has been devoted to the estimation of eQTL effect…

统计方法学 · 统计学 2017-09-08 John Palowitch , Andrey Shabalin , Yihui Zhou , Andrew B. Nobel , Fred A. Wright

Genome-wide association studies (GWAS) have been widely used to examine the association between single nucleotide polymorphisms (SNPs) and complex traits, where both the sample size n and the number of SNPs p can be very large. Recently,…

统计方法学 · 统计学 2019-03-05 Bingxin Zhao , Hongtu Zhu

Metabolic heterogeneity is widely recognised as the next challenge in our understanding of non-genetic variation. A growing body of evidence suggests that metabolic heterogeneity may result from the inherent stochasticity of intracellular…

分子网络 · 定量生物学 2020-10-08 Mona K Tonn , Philipp Thomas , Mauricio Barahona , Diego A Oyarzún

Single-cell RNA sequencing (scRNA-seq) technology provides high-throughput gene expression data to study the cellular heterogeneity and dynamics of complex organisms. Graph neural networks (GNNs) have been widely used for automatic cell…

机器学习 · 计算机科学 2023-12-19 Rui Yang , Wenrui Dai , Chenglin Li , Junni Zou , Dapeng Wu , Hongkai Xiong

In immunological studies, the characterization of small, functionally distinct cell subsets from blood and tissue is crucial to decipher system level biological changes. An increasing number of studies rely on assays that provide…

The two-phase sampling design is a cost-efficient way of collecting expensive covariate information on a judiciously selected subsample. It is natural to apply such a strategy for collecting genetic data in a subsample enriched for exposure…

应用统计 · 统计学 2013-05-27 Jaeil Ahn , Bhramar Mukherjee , Stephen B. Gruber , Malay Ghosh

We consider applying Bayesian Variable Selection Regression, or BVSR, to genome-wide association studies and similar large-scale regression problems. Currently, typical genome-wide association studies measure hundreds of thousands, or…

应用统计 · 统计学 2011-10-28 Yongtao Guan , Matthew Stephens

As a living information and communications system, the genome encodes patterns in single nucleotide polymorphisms (SNPs) reflecting human adaption that optimizes population survival in differing environments. This paper mathematically…

种群与进化 · 定量生物学 2018-03-22 James Lindesay , Tshela E. Mason , William Hercules , Georgia M. Dunston

2 Diabetes is a leading worldwide public health concern, and its increasing prevalence has significant health and economic importance in all nations. The condition is a multifactorial disorder with a complex aetiology. The genetic…

机器学习 · 计算机科学 2018-08-30 Basma Abdulaimma , Paul Fergus , Carl Chalmers

Many complex disease syndromes such as asthma consist of a large number of highly related, rather than independent, clinical phenotypes, raising a new technical challenge in identifying genetic variations associated simultaneously with…

机器学习 · 统计学 2008-11-16 Seyoung Kim , Kyung-Ah Sohn , Eric P. Xing

Building prediction models for outcomes of clinical relevance when only a limited number of mutational features are available causes considerable challenges due to the sparseness and low-dimensionality of the data. In this article, we…

基因组学 · 定量生物学 2022-12-13 Maya Ramchandran , Maayan Baron

Gene expression prediction plays a vital role in transcriptome-wide association studies (TWAS), which seek to establish associations between tissue gene expression and complex traits. Traditional models rely on genetic variants in close…

分子网络 · 定量生物学 2024-08-19 Gutama Ibrahim Mohammad , Tom Michoel

Discovering causal genetic variants from large genetic association studies poses many difficult challenges. Assessing which genetic markers are involved in determining trait status is a computationally demanding task, especially in the…

基因组学 · 定量生物学 2015-04-09 Andrew L. Beam , Alison Motsinger-Reif , Jon Doyle

In many transcriptomic studies, the correlation of genes might fluctuate with quantitative factors such as genetic ancestry. We propose a method that models the covariance between two variables to vary against a continuous covariate. For…

统计方法学 · 统计学 2021-05-03 Tae Hyun Kim , Dan Nicolae

We develop a Gaussian-process mixture model for heterogeneous treatment effect estimation that leverages the use of transformed outcomes. The approach we will present attempts to improve point estimation and uncertainty quantification…

统计方法学 · 统计学 2018-12-19 Abbas Zaidi , Sayan Mukherjee

Polygenic risk scores (PRSs) can significantly enhance breast cancer risk prediction when combined with clinical risk factor data. While many studies have explored the value-add of PRSs, little is known about the potential impact of…

基因组学 · 定量生物学 2024-07-31 Monica Isgut , Andrew Hornback , Yunan Luo , Asma Khimani , Neha Jain , May D. Wang

To date, most genetic analyses of phenotypes have focused on analyzing single traits or, analyzing each phenotype independently. However, joint epistasis analysis of multiple complementary traits will increase statistical power, and hold…

基因组学 · 定量生物学 2015-12-04 Futao Zhang , Dan Xie , Meimei Liang , Momiao Xiong

Polygnicity refers to the phenomenon that multiple genetic variants have a non-zero effect on a complex trait. It is defined as the proportion of genetic variants that have a nonzero effect on the trait. Evaluation of polygenicity can…

基因组学 · 定量生物学 2022-07-26 Arunabha Majumdar , Bogdan Pasaniuc

Longitudinal biomarkers are frequently collected in clinical studies due to their strong association with time-to-event outcomes. While considerable progress has been made in methods for jointly modeling longitudinal and survival data,…

统计方法学 · 统计学 2026-02-18 Yuan Bian , Shelley B. Bull