Sparse Models

PRISM: ancestry-aware integration of tissue-specific genomic annotations enhances the transferability of polygenic scores featured image

PRISM: ancestry-aware integration of tissue-specific genomic annotations enhances the transferability of polygenic scores

In this study, led by Xiaohe (Lucy) Tian, we showed that ancestry-aware integration of tissue-specific genomic annotations enhances the transferability of polygenic scores (PGS).

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Lucy Tian
A polygenic score method boosted by non-additive models featured image

A polygenic score method boosted by non-additive models

We developed GenoBoost, a polygenic score modeling approach, incorporating both additive and non-additive genetic dominance effects.

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Yosuke Tanigawa, Ph.D.
Power of inclusion: Enhancing polygenic prediction with admixed individuals featured image

Power of inclusion: Enhancing polygenic prediction with admixed individuals

We developed a polygenic score training approach that allows direct inclusion of admixed individuals without the need for local ancestry inference and showed ancestry-diverse …

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Yosuke Tanigawa, Ph.D.
Large-scale multivariate sparse regression with applications to UK Biobank featured image

Large-scale multivariate sparse regression with applications to UK Biobank

In this study led by Junyang Qian, we present a method to fit sparse multi-variate and multi-response regression model.

Significant Sparse Polygenic Risk Scores across 813 traits in UK Biobank featured image

Significant Sparse Polygenic Risk Scores across 813 traits in UK Biobank

We performed a systematic assessment of the predictive performance of PRS models across >1,500 traits in UK Biobank and report 813 PRS models with significant predictive …

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Yosuke Tanigawa, Ph.D.
Fast Numerical Optimization for Genome Sequencing Data in Population Biobanks featured image

Fast Numerical Optimization for Genome Sequencing Data in Population Biobanks

In this paper led by Ruilin Li, we describe memory-efficient implementation of snpnet (sparse-snpnet and snpnet-v2).

[Review in Japanese] 複数の表現型を用いた人類遺伝統計学の大規模情報解析 (Large-scale human genetic statistical inference with multiple phenotypes)

[invited review written in Japanese] 日本語総説の執筆の機会をいただき、ゲノムワイド相関解析(GWAS)、ポリジェニック・リスク・スコア(polygenic risk score)、高次元データセットでの正則化つきの回帰モデル(penalized regression、Lasso 回帰など)に関する人類統計遺伝学の解析手法 …

Survival Analysis on Rare Events Using Group-Regularized Multi-Response Cox Regression featured image

Survival Analysis on Rare Events Using Group-Regularized Multi-Response Cox Regression

In this paper led by Ruilin Li, we describe a new method to fit a sparse Cox Model for multiple time-to-event phenotypes from a large-scale (> 1 million features) genetic dataset.

A fast and scalable framework for large-scale and ultrahigh-dimensional sparse regression with application to the UK Biobank featured image

A fast and scalable framework for large-scale and ultrahigh-dimensional sparse regression with application to the UK Biobank

In this project led by Junyang Qian, we developed BASIL, a novel algorithm to fit large-scale L1 penalized (Lasso) regression model using an iterative procedure, and implemented R …

Fast Lasso method for large-scale and ultrahigh-dimensional Cox model with applications to UK Biobank featured image

Fast Lasso method for large-scale and ultrahigh-dimensional Cox model with applications to UK Biobank

We propose extending the BASIL/snpnet algorithm to fit the L1 penalized Cox proportional hazards model using a large-scale dataset from a genotyped cohort.