In order to check involvement of the MHC region, we repeated the stratified Q-Q plot for SCZ given lung cancer (Supplementary Figure 2) including all SNPs mapping to the MHC, but we did not find substantial changes in enrichment as seen in the stratified Q-Q plots between analysis including the MHC (Supplementary Figure 2) and excluding the MHC (Fig. 1). This evidence concerns the gene HLA-C and lung cancer.