Fig. 1.
Overview of the proposed Imaging Genetic Enrichment Analysis (IGEA) framework. (A) Perform SNP-level GWAS of brain wide imaging measures. (B) Map SNP-level GWAS findings to gene-level. (C) Construct gene-ROI expression matrix from AHBA data. (D) Construct GS-BC modules by performing 2D hierarchical clustering, and filter out non-significant 2D clusters. (E) Perform IGEA by mapping gene-level GWAS findings to identified GS-BC modules. (F) For each enriched GS-BC module, examine the GS using GO terms, KEGG pathways, and OMIM disease databases, and map the BC to the brain.