Session 3: Fine-mapping and colocalization

Practical session

This workshop deploys a precoded Jupyter notebook through Google Colaboratory to perform Fine mapping and colocalization analyses . We will also explore data visualization of the results. The majority of the session (except for mounting and setup) will be performed in R.

Objectives

  • To perform fine-mapping analysis, with only one potential causal variant in the region
  • To perform colocalization of a GWAS significant loci with cis-eQTL data from two tissues
  • To perform fine-mapping analysis, with more than one potential causal variants in the region
  • Visualize the results

Prerequisites

Before starting this workshop, we recommend that you have:

  • A Google Account, completed Workshop #1 and been introduced to the usage of Google Colab, PLINK software, and data QC.
  • A basic understanding of the pipeline of GWAS analysis and expected output from genome-wide association studies (GWAS) (covered in Workshop #2)
  • Basic R programming for visualization.

Let’s start

Please go ahead and open the FineMapping&Colocalization.ipynb Notebook in Google Colab