Fig. 2From: Investigation of a nonsense mutation located in the complex KIV-2 copy number variation region of apolipoprotein(a) in 10,910 individualsAssociation of the R21X variant with reduced Lp(a) levels. Lp(a) is lower in R21X variant carriers (i.e., at least one KIV-2 repeat carrying the R21X variant) in each population. Outliers are not shown to avoid an overly extended range of the scale due to the highly skewed distribution of Lp(a). The boxplots including the outliers are provided in Additional file 1: Fig. S5Back to article page