A Manhattan plot for the GWGBA analysis of G6. The y axis shows the -log 10 -transformed two-tailed P value of each gene from a linear model, and the x axis shows the chromosomal position. The dotted red line indicates the Bonferroni-corrected threshold (P = 2.614 x 10 -6) for the genome-wide significance of the gene-based test. The gene with the lowest P value is highlighted.