Genetic locus that affects gene expression is often referred to as expression quantitative trait locus (eQTL). eQTL mapping studies assesses the association of SNPs with genome-wide expression levels. >>>
An important step in the analysis of genome-wide association studies (GWAS) is to identify problematic subjects and markers. Quality control (QC) in GWAS removes markers and individuals, and greatly increases the accuracy of findings. >>>