Q-Q plot of multivariate analysis. Black points correspond to SNPs included in the analyses. The 45° line refers to no significant association. The dotted line corresponds to p-value of 5 × 10-8. "Excluded" line is where SNPs that were found in significant regions (genes) in univariate analyses were removed.
Middelberg et al. BMC Medical Genetics 2011 12:123 doi:10.1186/1471-2350-12-123