Fig. 1

Manhattan plots for a firework fear and b noise reactivity. A suggestive line (blue) was placed at p = 2 × 10⁻⁰⁵, based on Bonferroni adjustment using the number of independent haplotype blocks (Karlsson et al., 2013). The more conservative GWAS significance line (red) was placed at p = 3.54 × 10^− 07 using the total number of tested SNPs (141.174 SNPs after QC). Quantile-quantile plots for c firework fear and d noise reactivity. Lambda was calculated at 1.0 for both traits